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Technical data sheet · ThinkSystem V3 · 2U dual-socket

Lenovo ThinkSystem SR650 V3Specifications, configurations & comparisons

The ThinkSystem SR650 V3 is Lenovo’s two-socket 2U rack server, taking one or two Xeon Scalable chips from Intel’s 4th or 5th Gen families, and is pitched at firms from small businesses to large enterprises running databases, virtualisation, VDI or HPC. This data sheet sets out its full documented option range — 84 processors, three drive zones, riser and GPU rules, and XClarity management — so you can plan a build Lenovo will actually support.

2U Rack1 or 2 sockets5th Gen Xeon Scalable4th Gen Xeon ScalableXClarity Controller 2
64cores per processorPlatinum 8592+, 8592V and 8593Q
8TBDDR5 ceiling32 × 256 GB 3DS RDIMM
402.5" drive bays24 front · 8 mid · 8 rear
36NVMe driveseach on its own x4 link
12PCIe slots10 rear + 2 front, plus OCP 3.0
3double-wide GPUsor 8 single-wide
Configure an SR650 V3 →Get a UK quoteRefurbished alternatives ↓

Every figure checked against the Lenovo ThinkSystem SR650 V3 Server Product Guide

Lenovo ThinkSystem SR650 V3 front view with 24 numbered 2.5-inch hot-swap drive bays and the front USB and VGA ports

Image: Lenovo

Form factor
2U Rack · 2 sockets
Processors
5th Gen Xeon · 4th Gen Xeon
Memory
32 × DDR5 RDIMM · up to 8 TB
Drive bays
Up to 40 · 20 backplane options
Expansion
12 × PCIe · 1 × OCP 3.0
GPUs
Up to 8 · 4 listed
Boot
M.2 and 7 mm · 7 boot options
Management
XClarity Controller 2
01 — Overview

The SR650 V3 at a glance

Our read of Lenovo’s documentation: where the SR650 V3 is strong, and the limits worth knowing before you spec one.

Strengths

  • Three drive zones — front, mid-chassis and rear — take the 2U chassis to 40 × 2.5-inch or 20 × 3.5-inch bays, and up to 36 NVMe drives can each run on a dedicated x4 link with no oversubscription.
  • One chassis spans two Xeon generations: Lenovo lists 84 processors, up to the 64-core, 385 W Platinum 8593Q.
  • Up to twelve PCIe slots plus OCP 3.0, including a front-access option that puts two x16 slots and the OCP card beside up to 16 drive bays.
  • Room for three double-wide GPUs — Lenovo lists its SR650 V4 successor at two.
  • An optional Neptune direct-water module carries all processor heat out through an open loop, leaving the fans to cool everything else.

Watch-outs

  • GPU builds constrain storage: no mid or rear bays and no 12 × 3.5-inch backplanes, and Lenovo documents three double-wide cards with 16 front 2.5-inch bays but only two with 24.
  • Many air-cooled combinations cap inlet air at 30 °C — GPUs, 350 W processors, 256 GB 3DS RDIMMs, or mid/rear bays behind a full 24 × 2.5-inch or 12 × 3.5-inch front — and some drop to 25 °C.
  • The 8 TB ceiling relies on 256 GB 3DS RDIMMs, a 5600 MHz part that Lenovo’s configurator offers only with 5th Gen processors; a 4th Gen build stops at 4 TB (32 × 128 GB).
  • With one processor the server keeps 16 DIMM slots (4 TB), loses Riser 2 and front slot 11, and supports at most eight front 2.5-inch NVMe drives.
  • Mid-chassis bays are simple-swap — the lid comes off to change a drive — and rule out full-length adapters and GPUs.
Processors84 SKUs
Cores / CPU8–64
DIMM slots32
Backplanes20
Max bays40
GPUsup to 8
PSU options11 · to 2,600 W
02 — Processors

84 supported processors, mapped

Lenovo lists 84 processors for the SR650 V3: 32 from the 5th Gen Xeon Scalable family and 52 from the 4th Gen, spanning 8 to 64 cores and 115 W to 385 W. Sixteen are single-socket-only parts. The landscape shows where each one sits; the explorer below it lets you sort and filter the full list.

Processor landscape — cores × TDP

84 SKUs · 2 families
Lenovo ThinkSystem SR650 V3: every supported processor by cores and TDP0816243240485664100 W150 W200 W250 W300 W350 W400 WCores per processorIntel Xeon Platinum 8593Q — 64 cores / 128 threads · 385 W · 2.2 GHz base · 320 MB cache · DDR5-5600Intel Xeon Platinum 8592+ — 64 cores / 128 threads · 350 W · 1.9 GHz base · 320 MB cache · DDR5-5600Intel Xeon Platinum 8592V — 64 cores / 128 threads · 330 W · 2 GHz base · 320 MB cache · DDR5-4800Intel Xeon Platinum 8580 — 60 cores / 120 threads · 350 W · 2 GHz base · 300 MB cache · DDR5-5600Intel Xeon Platinum 8581V — 60 cores / 120 threads · 270 W · 2 GHz base · 300 MB cache · DDR5-4800Intel Xeon Platinum 8570 — 56 cores / 112 threads · 350 W · 2.1 GHz base · 300 MB cache · DDR5-5600Intel Xeon Platinum 8571N — 52 cores / 104 threads · 300 W · 2.4 GHz base · 300 MB cache · DDR5-4800Intel Xeon Platinum 8558P — 48 cores / 96 threads · 350 W · 2.7 GHz base · 260 MB cache · DDR5-5600Intel Xeon Platinum 8568Y+ — 48 cores / 96 threads · 350 W · 2.3 GHz base · 300 MB cache · DDR5-5600Intel Xeon Platinum 8558 — 48 cores / 96 threads · 330 W · 2.1 GHz base · 260 MB cache · DDR5-5200Intel Xeon Platinum 8558U — 48 cores / 96 threads · 300 W · 2 GHz base · 260 MB cache · DDR5-4800Intel Xeon Gold 6554S — 36 cores / 72 threads · 270 W · 2.2 GHz base · 180 MB cache · DDR5-5200Intel Xeon Gold 6558Q — 32 cores / 64 threads · 350 W · 3.2 GHz base · 60 MB cache · DDR5-5200Intel Xeon Platinum 8562Y+ — 32 cores / 64 threads · 300 W · 2.8 GHz base · 60 MB cache · DDR5-5600Intel Xeon Gold 6530 — 32 cores / 64 threads · 270 W · 2.1 GHz base · 160 MB cache · DDR5-4800Intel Xeon Gold 6548N — 32 cores / 64 threads · 250 W · 2.8 GHz base · 60 MB cache · DDR5-5200Intel Xeon Gold 6548Y+ — 32 cores / 64 threads · 250 W · 2.5 GHz base · 60 MB cache · DDR5-5200Intel Xeon Gold 6538Y+ — 32 cores / 64 threads · 225 W · 2.2 GHz base · 60 MB cache · DDR5-5200Intel Xeon Gold 6538N — 32 cores / 64 threads · 205 W · 2.1 GHz base · 60 MB cache · DDR5-5200Intel Xeon Gold 5520+ — 28 cores / 56 threads · 205 W · 2.2 GHz base · 52.5 MB cache · DDR5-4800Intel Xeon Gold 5512U — 28 cores / 56 threads · 185 W · 2.1 GHz base · 52.5 MB cache · DDR5-4800Intel Xeon Gold 6542Y — 24 cores / 48 threads · 250 W · 2.9 GHz base · 60 MB cache · DDR5-5200Intel Xeon Silver 4516Y+ — 24 cores / 48 threads · 185 W · 2.2 GHz base · 45 MB cache · DDR5-4400Intel Xeon Gold 6544Y — 16 cores / 32 threads · 270 W · 3.6 GHz base · 45 MB cache · DDR5-5200Intel Xeon Gold 6526Y — 16 cores / 32 threads · 195 W · 2.8 GHz base · 37.5 MB cache · DDR5-5200Intel Xeon Silver 4514Y — 16 cores / 32 threads · 150 W · 2 GHz base · 30 MB cache · DDR5-4400Intel Xeon Silver 4510 — 12 cores / 24 threads · 150 W · 2.4 GHz base · 30 MB cache · DDR5-4400Intel Xeon Silver 4510T — 12 cores / 24 threads · 115 W · 2 GHz base · 30 MB cache · DDR5-4400Intel Xeon Gold 6534 — 8 cores / 16 threads · 195 W · 3.9 GHz base · 22.5 MB cache · DDR5-4800Intel Xeon Gold 5515+ — 8 cores / 16 threads · 165 W · 3.2 GHz base · 22.5 MB cache · DDR5-4800Intel Xeon Bronze 3508U — 8 cores / 8 threads · 125 W · 2.1 GHz base · 22.5 MB cache · DDR5-4400Intel Xeon Silver 4509Y — 8 cores / 16 threads · 125 W · 2.6 GHz base · 22.5 MB cache · DDR5-4400Intel Xeon Platinum 8490H — 60 cores / 120 threads · 350 W · 1.9 GHz base · 112.5 MB cache · DDR5-4800Intel Xeon Platinum 8480+ — 56 cores / 112 threads · 350 W · 2 GHz base · 105 MB cache · DDR5-4800Intel Xeon Platinum 8480CL — 56 cores / 112 threads · 350 W · 2 GHz base · 105 MB cache · DDR5-4800Intel Xeon Platinum 8470 — 52 cores / 104 threads · 350 W · 2 GHz base · 105 MB cache · DDR5-4800Intel Xeon Platinum 8470Q — 52 cores / 104 threads · 350 W · 2.1 GHz base · 105 MB cache · DDR5-4800Intel Xeon Platinum 8470N — 52 cores / 104 threads · 300 W · 1.7 GHz base · 97.5 MB cache · DDR5-4800Intel Xeon Platinum 8468 — 48 cores / 96 threads · 350 W · 2.1 GHz base · 105 MB cache · DDR5-4800Intel Xeon Platinum 8468H — 48 cores / 96 threads · 330 W · 2.1 GHz base · 105 MB cache · DDR5-4800Intel Xeon Platinum 8468V — 48 cores / 96 threads · 330 W · 2.4 GHz base · 97.5 MB cache · DDR5-4800Intel Xeon Platinum 8461V — 48 cores / 96 threads · 300 W · 2.2 GHz base · 97.5 MB cache · DDR5-4800Intel Xeon Platinum 8458P — 44 cores / 88 threads · 350 W · 2.7 GHz base · 82.5 MB cache · DDR5-4800Intel Xeon Platinum 8460H — 40 cores / 80 threads · 330 W · 2.2 GHz base · 105 MB cache · DDR5-4800Intel Xeon Platinum 8460Y+ — 40 cores / 80 threads · 300 W · 2 GHz base · 105 MB cache · DDR5-4800Intel Xeon Platinum 8452Y — 36 cores / 72 threads · 300 W · 2 GHz base · 67.5 MB cache · DDR5-4800Intel Xeon Gold 6458Q — 32 cores / 64 threads · 350 W · 3.1 GHz base · 60 MB cache · DDR5-4800Intel Xeon Platinum 8462Y+ — 32 cores / 64 threads · 300 W · 2.8 GHz base · 60 MB cache · DDR5-4800Intel Xeon Gold 6430 — 32 cores / 64 threads · 270 W · 2.1 GHz base · 60 MB cache · DDR5-4400Intel Xeon Gold 6454S — 32 cores / 64 threads · 270 W · 2.2 GHz base · 60 MB cache · DDR5-4800Intel Xeon Platinum 8454H — 32 cores / 64 threads · 270 W · 2.1 GHz base · 82.5 MB cache · DDR5-4800Intel Xeon Gold 6414U — 32 cores / 64 threads · 250 W · 2 GHz base · 60 MB cache · DDR5-4800Intel Xeon Gold 6448H — 32 cores / 64 threads · 250 W · 2.4 GHz base · 60 MB cache · DDR5-4800Intel Xeon Gold 6448Y — 32 cores / 64 threads · 225 W · 2.1 GHz base · 60 MB cache · DDR5-4800Intel Xeon Gold 6433N — 32 cores / 64 threads · 205 W · 2 GHz base · 60 MB cache · DDR5-4400Intel Xeon Gold 6438M — 32 cores / 64 threads · 205 W · 2.2 GHz base · 60 MB cache · DDR5-4800Intel Xeon Gold 6438N — 32 cores / 64 threads · 205 W · 2 GHz base · 60 MB cache · DDR5-4800Intel Xeon Gold 6438Y+ — 32 cores / 64 threads · 205 W · 2 GHz base · 60 MB cache · DDR5-4800Intel Xeon Gold 6443N — 32 cores / 64 threads · 195 W · 1.6 GHz base · 60 MB cache · DDR5-4400Intel Xeon Gold 6428N — 32 cores / 64 threads · 185 W · 1.8 GHz base · 60 MB cache · DDR5-4000Intel Xeon Platinum 8450H — 28 cores / 56 threads · 250 W · 2 GHz base · 75 MB cache · DDR5-4800Intel Xeon Gold 5420+ — 28 cores / 56 threads · 205 W · 2 GHz base · 52.5 MB cache · DDR5-4400Intel Xeon Gold 6423N — 28 cores / 56 threads · 195 W · 2 GHz base · 52.5 MB cache · DDR5-4400Intel Xeon Gold 6442Y — 24 cores / 48 threads · 225 W · 2.6 GHz base · 60 MB cache · DDR5-4800Intel Xeon Gold 5412U — 24 cores / 48 threads · 185 W · 2.1 GHz base · 45 MB cache · DDR5-4400Intel Xeon Gold 5418Y — 24 cores / 48 threads · 185 W · 2 GHz base · 45 MB cache · DDR5-4400Intel Xeon Gold 6403N — 24 cores / 48 threads · 185 W · 1.9 GHz base · 45 MB cache · DDR5-4000Intel Xeon Gold 6418H — 24 cores / 48 threads · 185 W · 2.1 GHz base · 60 MB cache · DDR5-4800Intel Xeon Gold 5411N — 24 cores / 48 threads · 165 W · 1.9 GHz base · 45 MB cache · DDR5-4400Intel Xeon Gold 5418N — 24 cores / 48 threads · 165 W · 1.8 GHz base · 45 MB cache · DDR5-4000Intel Xeon Silver 4416+ — 20 cores / 40 threads · 165 W · 2 GHz base · 37.5 MB cache · DDR5-4000Intel Xeon Gold 5433N — 20 cores / 48 threads · 160 W · 2.3 GHz base · 45 MB cache · DDR5-4000Intel Xeon Gold 5423N — 20 cores / 40 threads · 145 W · 2.1 GHz base · 37.5 MB cache · DDR5-4000Intel Xeon Gold 6416H — 18 cores / 36 threads · 165 W · 2.2 GHz base · 45 MB cache · DDR5-4800Intel Xeon Gold 6444Y — 16 cores / 32 threads · 270 W · 3.6 GHz base · 45 MB cache · DDR5-4800Intel Xeon Platinum 8444H — 16 cores / 32 threads · 270 W · 2.9 GHz base · 45 MB cache · DDR5-4800Intel Xeon Gold 6426Y — 16 cores / 32 threads · 185 W · 2.5 GHz base · 37.5 MB cache · DDR5-4800Intel Xeon Gold 5416S — 16 cores / 32 threads · 150 W · 2 GHz base · 30 MB cache · DDR5-4400Intel Xeon Silver 4410Y — 12 cores / 24 threads · 150 W · 2 GHz base · 30 MB cache · DDR5-4000Intel Xeon Silver 4410T — 10 cores / 20 threads · 150 W · 2.7 GHz base · 26.25 MB cache · DDR5-4000Intel Xeon Gold 6434 — 8 cores / 16 threads · 195 W · 3.7 GHz base · 22.5 MB cache · DDR5-4800Intel Xeon Gold 6434H — 8 cores / 16 threads · 195 W · 3.7 GHz base · 22.5 MB cache · DDR5-4800Intel Xeon Gold 5415+ — 8 cores / 16 threads · 150 W · 2.9 GHz base · 22.5 MB cache · DDR5-4400Intel Xeon Bronze 3408U — 8 cores / 8 threads · 125 W · 1.8 GHz base · 22.5 MB cache · DDR5-40008593Q64 cores — the top SKU8581V4.5 W/core — most efficient
5th Gen Xeon Scalable 324th Gen Xeon Scalable 52Bubble size = L3 cache · hover a bubble for the full SKU

Processor explorer

filter · sort · compare
ProcessorCores / threadsBaseL3 cacheTDPW / coreMemory
Intel Xeon Platinum 8593Q64 / 1282.2 GHz320 MB385 W6.0DDR5-5600
Intel Xeon Platinum 8592+64 / 1281.9 GHz320 MB350 W5.5DDR5-5600
Intel Xeon Platinum 8592V64 / 1282 GHz320 MB330 W5.2DDR5-4800
Intel Xeon Platinum 858060 / 1202 GHz300 MB350 W5.8DDR5-5600
Intel Xeon Platinum 8581V60 / 1202 GHz300 MB270 W4.5DDR5-4800
Intel Xeon Platinum 8490H60 / 1201.9 GHz112.5 MB350 W5.8DDR5-4800
Intel Xeon Platinum 857056 / 1122.1 GHz300 MB350 W6.3DDR5-5600
Intel Xeon Platinum 8480+56 / 1122 GHz105 MB350 W6.3DDR5-4800
Intel Xeon Platinum 8480CL56 / 1122 GHz105 MB350 W6.3DDR5-4800
Intel Xeon Platinum 8571N52 / 1042.4 GHz300 MB300 W5.8DDR5-4800
Intel Xeon Platinum 847052 / 1042 GHz105 MB350 W6.7DDR5-4800
Intel Xeon Platinum 8470Q52 / 1042.1 GHz105 MB350 W6.7DDR5-4800
Intel Xeon Platinum 8470N52 / 1041.7 GHz97.5 MB300 W5.8DDR5-4800
Intel Xeon Platinum 8558P48 / 962.7 GHz260 MB350 W7.3DDR5-5600
Intel Xeon Platinum 8568Y+48 / 962.3 GHz300 MB350 W7.3DDR5-5600
Intel Xeon Platinum 855848 / 962.1 GHz260 MB330 W6.9DDR5-5200
Intel Xeon Platinum 8558U48 / 962 GHz260 MB300 W6.3DDR5-4800
Intel Xeon Platinum 846848 / 962.1 GHz105 MB350 W7.3DDR5-4800
Intel Xeon Platinum 8468H48 / 962.1 GHz105 MB330 W6.9DDR5-4800
Intel Xeon Platinum 8468V48 / 962.4 GHz97.5 MB330 W6.9DDR5-4800
Intel Xeon Platinum 8461V48 / 962.2 GHz97.5 MB300 W6.3DDR5-4800
Intel Xeon Platinum 8458P44 / 882.7 GHz82.5 MB350 W8.0DDR5-4800
Intel Xeon Platinum 8460H40 / 802.2 GHz105 MB330 W8.3DDR5-4800
Intel Xeon Platinum 8460Y+40 / 802 GHz105 MB300 W7.5DDR5-4800
Intel Xeon Gold 6554S36 / 722.2 GHz180 MB270 W7.5DDR5-5200
Intel Xeon Platinum 8452Y36 / 722 GHz67.5 MB300 W8.3DDR5-4800
Intel Xeon Gold 6558Q32 / 643.2 GHz60 MB350 W10.9DDR5-5200
Intel Xeon Platinum 8562Y+32 / 642.8 GHz60 MB300 W9.4DDR5-5600
Intel Xeon Gold 653032 / 642.1 GHz160 MB270 W8.4DDR5-4800
Intel Xeon Gold 6548N32 / 642.8 GHz60 MB250 W7.8DDR5-5200
Intel Xeon Gold 6548Y+32 / 642.5 GHz60 MB250 W7.8DDR5-5200
Intel Xeon Gold 6538Y+32 / 642.2 GHz60 MB225 W7.0DDR5-5200
Intel Xeon Gold 6538N32 / 642.1 GHz60 MB205 W6.4DDR5-5200
Intel Xeon Gold 6458Q32 / 643.1 GHz60 MB350 W10.9DDR5-4800
Intel Xeon Platinum 8462Y+32 / 642.8 GHz60 MB300 W9.4DDR5-4800
Intel Xeon Gold 643032 / 642.1 GHz60 MB270 W8.4DDR5-4400
Intel Xeon Gold 6454S32 / 642.2 GHz60 MB270 W8.4DDR5-4800
Intel Xeon Platinum 8454H32 / 642.1 GHz82.5 MB270 W8.4DDR5-4800
Intel Xeon Gold 6414U32 / 642 GHz60 MB250 W7.8DDR5-4800
Intel Xeon Gold 6448H32 / 642.4 GHz60 MB250 W7.8DDR5-4800
Intel Xeon Gold 6448Y32 / 642.1 GHz60 MB225 W7.0DDR5-4800
Intel Xeon Gold 6433N32 / 642 GHz60 MB205 W6.4DDR5-4400
Intel Xeon Gold 6438M32 / 642.2 GHz60 MB205 W6.4DDR5-4800
Intel Xeon Gold 6438N32 / 642 GHz60 MB205 W6.4DDR5-4800
Intel Xeon Gold 6438Y+32 / 642 GHz60 MB205 W6.4DDR5-4800
Intel Xeon Gold 6443N32 / 641.6 GHz60 MB195 W6.1DDR5-4400
Intel Xeon Gold 6428N32 / 641.8 GHz60 MB185 W5.8DDR5-4000
Intel Xeon Gold 5520+28 / 562.2 GHz52.5 MB205 W7.3DDR5-4800
Intel Xeon Gold 5512U28 / 562.1 GHz52.5 MB185 W6.6DDR5-4800
Intel Xeon Platinum 8450H28 / 562 GHz75 MB250 W8.9DDR5-4800
Intel Xeon Gold 5420+28 / 562 GHz52.5 MB205 W7.3DDR5-4400
Intel Xeon Gold 6423N28 / 562 GHz52.5 MB195 W7.0DDR5-4400
Intel Xeon Gold 6542Y24 / 482.9 GHz60 MB250 W10.4DDR5-5200
Intel Xeon Silver 4516Y+24 / 482.2 GHz45 MB185 W7.7DDR5-4400
Intel Xeon Gold 6442Y24 / 482.6 GHz60 MB225 W9.4DDR5-4800
Intel Xeon Gold 5412U24 / 482.1 GHz45 MB185 W7.7DDR5-4400
Intel Xeon Gold 5418Y24 / 482 GHz45 MB185 W7.7DDR5-4400
Intel Xeon Gold 6403N24 / 481.9 GHz45 MB185 W7.7DDR5-4000
Intel Xeon Gold 6418H24 / 482.1 GHz60 MB185 W7.7DDR5-4800
Intel Xeon Gold 5411N24 / 481.9 GHz45 MB165 W6.9DDR5-4400
Intel Xeon Gold 5418N24 / 481.8 GHz45 MB165 W6.9DDR5-4000
Intel Xeon Silver 4416+20 / 402 GHz37.5 MB165 W8.3DDR5-4000
Intel Xeon Gold 5433N20 / 482.3 GHz45 MB160 W8.0DDR5-4000
Intel Xeon Gold 5423N20 / 402.1 GHz37.5 MB145 W7.3DDR5-4000
Intel Xeon Gold 6416H18 / 362.2 GHz45 MB165 W9.2DDR5-4800
Intel Xeon Gold 6544Y16 / 323.6 GHz45 MB270 W16.9DDR5-5200
Intel Xeon Gold 6526Y16 / 322.8 GHz37.5 MB195 W12.2DDR5-5200
Intel Xeon Silver 4514Y16 / 322 GHz30 MB150 W9.4DDR5-4400
Intel Xeon Gold 6444Y16 / 323.6 GHz45 MB270 W16.9DDR5-4800
Intel Xeon Platinum 8444H16 / 322.9 GHz45 MB270 W16.9DDR5-4800
Intel Xeon Gold 6426Y16 / 322.5 GHz37.5 MB185 W11.6DDR5-4800
Intel Xeon Gold 5416S16 / 322 GHz30 MB150 W9.4DDR5-4400
Intel Xeon Silver 451012 / 242.4 GHz30 MB150 W12.5DDR5-4400
Intel Xeon Silver 4510T12 / 242 GHz30 MB115 W9.6DDR5-4400
Intel Xeon Silver 4410Y12 / 242 GHz30 MB150 W12.5DDR5-4000
Intel Xeon Silver 4410T10 / 202.7 GHz26.25 MB150 W15.0DDR5-4000
Intel Xeon Gold 65348 / 163.9 GHz22.5 MB195 W24.4DDR5-4800
Intel Xeon Gold 5515+8 / 163.2 GHz22.5 MB165 W20.6DDR5-4800
Intel Xeon Bronze 3508U8 / 82.1 GHz22.5 MB125 W15.6DDR5-4400
Intel Xeon Silver 4509Y8 / 162.6 GHz22.5 MB125 W15.6DDR5-4400
Intel Xeon Gold 64348 / 163.7 GHz22.5 MB195 W24.4DDR5-4800
Intel Xeon Gold 6434H8 / 163.7 GHz22.5 MB195 W24.4DDR5-4800
Intel Xeon Gold 5415+8 / 162.9 GHz22.5 MB150 W18.8DDR5-4400
Intel Xeon Bronze 3408U8 / 81.8 GHz22.5 MB125 W15.6DDR5-4000
  • Single-socket-only SKUs — every U-suffix part plus 5411N, 5423N, 5433N, 6403N, 6423N, 6433N, 6443N, 8461V, 8571N and 8581V — have no UPI links and are sold only in factory (CTO) or preconfigured builds, not as option kits.
  • The vRAN parts 5423N and 5433N (48 PCIe lanes) and 6403N, 6423N, 6433N and 6443N (64 lanes) cannot drive Riser 3, leaving Riser 1 and the OCP slot as their only expansion.
  • Any processor rated at 270 W or more calls for the dual-rotor Performance fans.
  • With a 350 W processor, an air-cooled server is held to 30 °C inlet air, and to 25 °C when the front carries 24 × 2.5-inch or 12 × 3.5-inch drives.
  • Silver, Gold and Platinum SKUs include Intel AMX; the number of QAT, DLB, DSA and IAA engines differs from model to model.
03 — Memory

32 DIMM slots, 16 per processor

Each processor drives eight DDR5 channels with two DIMM sockets apiece. Populations of 1, 2, 4, 6, 8, 12 and 16 DIMMs on each processor are supported; eight per processor (one per channel) gives the fastest data rate, and filling the second socket in every channel doubles capacity at a lower one.

Capacity with every slot filled

by DIMM size
16 GB512 GB32 GB1 TB64 GB2 TB96 GB3 TB128 GB4 TB256 GB8 TB5th Gen only32 slots · 16 per processor · each tick = one DIMM

Operating speed

per Lenovo memory tables
Processor1 DIMM / channel2 DIMMs / channel
5th Gen Xeon Scalable5600 MT/s · 3DS 52004400 MT/s*
4th Gen Xeon Scalable4800 MT/s4400 MT/s
  • * Lenovo’s memory section gives 4400 MT/s at two DIMMs per channel for 5th Gen RDIMMs and 3DS RDIMMs, and 4800 MT/s only for Performance+ RDIMMs; its summary tables quote 4800 MT/s at 2 DPC without that qualification.
  • The processor’s own memory bus caps every figure — across the listed SKUs it ranges from 4000 to 5600 MT/s.
  • Lenovo’s configurator pairs 5600 MHz DIMMs with 5th Gen and 4800 MHz DIMMs with 4th Gen. The 128 GB 2Rx4 RDIMM (4X77A93887) works with both, and the Bronze 3508U and Silver 4509Y, 4510 and 4510T also accept the 4800 MHz parts.
  • You cannot mix 9x4, 10x4 and 3DS RDIMMs, x4 with x8 parts, or DRAM densities, and a processor takes at most two DIMM capacities. 9x4 RDIMMs also give up ADDDC and memory mirroring.
04 — Storage

20 backplane options, up to 40 bays

Drives can live in three places: up to 24 hot-swap bays at the front, eight simple-swap bays in a mid-chassis cage and eight hot-swap bays at the rear. The headline layouts show the ceilings Lenovo documents; the chart after them plots the 20 individual backplanes it lists, which are combined to build each layout.

Headline layouts

front panel view

Front panel

Rear module

Lenovo config 25: three 8-bay SAS/SATA backplanes at the front, eight simple-swap bays in the mid cage (not drawn) and an 8-bay rear backplane — 40 SAS/SATA drives in total.

SAS/SATANVMeSAS/SATA + NVMe

Controllers & boot

  • On Board SATA Software RAID Mode — Software RAID. Onboard SATA - Intel VROC SATA RAID (Intel RSTe); RAID levels: see Intel VROC section of the guide
  • Intel VROC RAID1 Only — Software RAID. Onboard NVMe - Intel VROC NVMe RAID; RAID levels: 1 only; Intel and non-Intel NVMe SSDs
  • Intel VROC (VMD NVMe RAID) Standard (supports RAID 0, 1, 10 for all brands of drives) — Software RAID. Onboard NVMe - Intel VROC NVMe RAID; RAID levels: see Intel VROC section of the guide
  • Intel VROC (VMD NVMe RAID) Premium (license upgrade - to enable RAID-5 support) — Software RAID. Onboard NVMe - Intel VROC NVMe RAID; RAID levels: see Intel VROC section of the guide
  • 440-8i SAS/SATA PCIe Gen4 12Gb HBA — HBA. 12Gb SAS/6Gb SATA HBA - Broadcom PCIe 4.0; RAID levels: None
  • 440-16i SAS/SATA PCIe Gen4 12Gb HBA — HBA. 12Gb SAS/6Gb SATA HBA - Broadcom PCIe 4.0; RAID levels: None
  • 440-16i SAS/SATA PCIe Gen4 12Gb Internal HBA — HBA. 12Gb SAS/6Gb SATA HBA - Broadcom PCIe 4.0; internal CFF (cabled); RAID levels: None
  • RAID 540-8i PCIe Gen4 12Gb Adapter — RAID. 12Gb SAS/6Gb SATA RAID Adapters - Broadcom PCIe 4.0; RAID levels: 0, 1, 10
  • M.2 SATA/x4 NVMe 2-Bay Adapter (4Y37A79663) — boot
  • M.2 NVMe 2-Bay RAID Adapter (4Y37A09750) — boot
  • M.2 RAID B540i-2i SATA/NVMe Adapter (4Y37A90063) — boot
  • 7mm SATA/NVMe 2-Bay Rear Hot-Swap RAID Enablement Kit, integrated Broadcom RAID (feature BYFG) — boot
All 24 controllers and 7 boot options
  • RAID 540-16i PCIe Gen4 12Gb Adapter — RAID. 12Gb SAS/6Gb SATA RAID Adapters - Broadcom PCIe 4.0; RAID levels: 0, 1, 10
  • RAID 940-8i 4GB Flash PCIe Gen4 12Gb Adapter — RAID, 4GB cache. 12Gb SAS/6Gb SATA RAID Adapters - Broadcom PCIe 4.0; RAID levels: 0, 1, 10, 5, 50, 6, 60
  • RAID 940-8i 8GB Flash PCIe Gen4 12Gb Adapter — RAID, 8GB cache. 12Gb SAS/6Gb SATA RAID Adapters - Broadcom PCIe 4.0; RAID levels: 0, 1, 10, 5, 50, 6, 60
  • RAID 940-16i 4GB Flash PCIe Gen4 12Gb Adapter — RAID, 4GB cache. 12Gb SAS/6Gb SATA RAID Adapters - Broadcom PCIe 4.0; RAID levels: 0, 1, 10, 5, 50, 6, 60
  • RAID 940-16i 8GB Flash PCIe Gen4 12Gb Adapter — RAID, 8GB cache. 12Gb SAS/6Gb SATA RAID Adapters - Broadcom PCIe 4.0; RAID levels: 0, 1, 10, 5, 50, 6, 60
  • RAID 940-16i 8GB Flash PCIe Gen4 12Gb Internal Adapter — RAID, 8GB cache. 12Gb SAS/6Gb SATA RAID Adapters - Broadcom PCIe 4.0; internal CFF (cabled); RAID levels: 0, 1, 10, 5, 50, 6, 60
  • RAID 940-32i 8GB Flash PCIe Gen4 12Gb Adapter — RAID, 8GB cache. 12Gb SAS/6Gb SATA RAID Adapters - Broadcom PCIe 4.0; RAID levels: 0, 1, 10, 5, 50, 6, 60
  • 48 port 12Gb Internal Expander — SAS Expander. 12Gb SAS/6Gb SATA expander; internal CFF (cabled); RAID levels: None
  • RAID 940-8i 4GB Flash PCIe Gen4 12Gb Adapter for U.3 — RAID, 4GB cache. NVMe using Tri-Mode (NVMe x1) (no support for NVMe U.2 drives); Tri-Mode (U.3 NVMe) variant; RAID levels: 0, 1, 10, 5, 50, 6, 60
  • RAID 940-8i 8GB Flash PCIe Gen4 12Gb Adapter for U.3 — RAID, 8GB cache. NVMe using Tri-Mode (NVMe x1) (no support for NVMe U.2 drives); Tri-Mode (U.3 NVMe) variant; RAID levels: 0, 1, 10, 5, 50, 6, 60
  • RAID 940-16i 4GB Flash PCIe Gen4 12Gb Adapter for U.3 — RAID, 4GB cache. NVMe using Tri-Mode (NVMe x1) (no support for NVMe U.2 drives); Tri-Mode (U.3 NVMe) variant; RAID levels: 0, 1, 10, 5, 50, 6, 60
  • RAID 940-16i 8GB Flash PCIe Gen4 12Gb Adapter for U.3 — RAID, 8GB cache. NVMe using Tri-Mode (NVMe x1) (no support for NVMe U.2 drives); Tri-Mode (U.3 NVMe) variant; RAID levels: 0, 1, 10, 5, 50, 6, 60
  • 4-Port PCIe Gen4 NVMe Retimer Adapter (4x drives) — NVMe Retimer. NVMe using x4 interface; RAID levels: None
  • PCIe Gen5 NVMe Retimer Adapter (4x drives) — NVMe Retimer. NVMe using x4 interface; RAID levels: None
  • ThinkSystem 440-16e SAS/SATA PCIe Gen4 12Gb HBA — HBA. External SAS HBA (JBOD to external enclosures/tape), part 4Y37A09724 feature B8P7 - lp1601 L6255
  • Intel VROC SATA RAID (Intel RSTe) — Software RAID. Onboard SATA ports with Intel VROC SATA RAID (formerly Intel RSTe) software RAID - lp1601 L495, lp1601 L4776; not supported by virtualization hypervisors
  • 7mm SATA/NVMe 2-Bay Rear Enablement Kit v2, RAID via VROC or RAID 540-8i adapter (feature BU0N) — boot
  • 2U 7mm Drive Kit w/ NVMe RAID, integrated Marvell 88NR2241 (feature B8P3) — boot
  • SR650 V3 7mm RAID B540p-2HS SATA/NVMe Enablement Kit, field upgrade (4XH7A93807) — boot
  • RAID 940 adapters handle U.3 NVMe drives alongside SAS and SATA in Tri-Mode, but only on AnyBay backplanes and with each NVMe drive on a single PCIe lane; U.2 drives are excluded.
  • Intel VROC runs the 14 onboard SATA ports and up to 20 onboard NVMe ports; NVMe RAID 5 needs the VROC Premium licence.
  • Mid-bay drives are simple-swap and draw power from Riser 1, and 2.5-inch mid backplanes are fitted as a pair with no NVMe/SAS mixing.
  • Boot uses either the internal M.2 module (one or two drives) or two rear 7mm drives in place of slot 3 or 6 — never both — and 7mm also cannot share the chassis with a 4 × 2.5-inch rear cage.
  • The 24 × 2.5-inch and 12 × 3.5-inch SAS expander backplanes need only one 8-port controller for their front bays, but Lenovo does not support them for cluster applications.

Every documented backplane

20 with drive bays
2U 24x2.5" SAS/SATA with Rear 4-Bay Expander Backp…2U 24x2.5" SAS/SATA with Rear 4-Bay Expander Backplane242U 8x2.5" AnyBay Gen5 Backplane2U 8x2.5" AnyBay Gen5 Backplane82U 8x2.5" NVMe Gen5 Backplane2U 8x2.5" NVMe Gen5 Backplane82U 8x2.5" SAS/SATA Backplane2U 8x2.5" SAS/SATA Backplane82U 8x2.5" SAS/SATA Rear Backplane2U 8x2.5" SAS/SATA Rear Backplane82U/4U 8x2.5" AnyBay Backplane2U/4U 8x2.5" AnyBay Backplane82U/4U 8x2.5" NVMe Backplane2U/4U 8x2.5" NVMe Backplane82U 4x2.5" Middle NVMe Backplane2U 4x2.5" Middle NVMe Backplane42U 4x2.5" Middle NVMe Gen5 Backplane2U 4x2.5" Middle NVMe Gen5 Backplane42U 4x2.5" SAS/SATA Backplane2U 4x2.5" SAS/SATA Backplane42U 4x2.5" SAS/SATA Middle Backplane2U 4x2.5" SAS/SATA Middle Backplane44x2.5" AnyBay Gen5 Backplane4x2.5" AnyBay Gen5 Backplane44x2.5" NVMe Gen 5 Backplane4x2.5" NVMe Gen 5 Backplane42U 12x3.5" SAS/SATA with Rear 4-Bay Expander Backp…2U 12x3.5" SAS/SATA with Rear 4-Bay Expander Backplane122U 8x3.5" SAS/SATA Backplane2U 8x3.5" SAS/SATA Backplane82U 8x3.5" SAS/SATA+4 AnyBay Backplane2U 8x3.5" SAS/SATA+4 AnyBay Backplane82U 8x3.5" SAS/SATA+4 NVMe Backplane2U 8x3.5" SAS/SATA+4 NVMe Backplane81U/2U 4x3.5" SAS/SATA Backplane1U/2U 4x3.5" SAS/SATA Backplane42U 4x3.5" SAS/SATA Middle Backplane2U 4x3.5" SAS/SATA Middle Backplane42U 2x3.5" SAS/SATA Rear Backplane2U 2x3.5" SAS/SATA Rear Backplane2Bays · solid = front · dashed = rear · brighter = NVMe-only
2.5-inch3.5-inchEDSFF (E1.S / E3.S)
05 — Accelerators & I/O

GPUs, PCIe and networking

GPUs install in the rear risers. Double-wide cards use slots 2, 5 and 7 and block the neighbouring slot 1, 4 or 8, and every GPU in a server must be the same model. The L4 and L40S are Controlled GPUs, so Lenovo ships them only on its “for AI” base models. Up to 8 × single-wide, or 3 × double-wide with 16 front 2.5-inch bays (2 with 24).

NVIDIA L4 24GB PCIe Gen4 Passive GPU

single-wide
24GB · up to 8

NVIDIA RTX A1000 8GB PCIe Gen4 Active GPU

single-wide
8GB · up to 8

NVIDIA RTX A400 4GB PCIe Gen4 Active GPU

single-wide
4GB · up to 8

NVIDIA L40S 48GB PCIe Gen4 Passive GPU

double-wide
48GB · up to 3

I/O topology

80 lanes per CPU
CPU 180 × PCIe 5.08 ch · 16 DIMMCPU 280 × PCIe 5.08 ch · 16 DIMMUPI · up to 4 links · 16 / 20 GT/sUp to 10 rear PCIe slots4 risers · Gen5 or Gen4 by riser2 × front PCIe 4.0 x16FHHL · with up to 16 front baysOCP 3.0 SFF slotrear Gen5 x16 or front Gen4 x16XCC2 · 1GbE mgmt portAST2600 BMC · Redfish · IPMI 2.0

Each processor supplies 80 PCIe 5.0 lanes at most, plus eight DDR5 channels, and reaches the second socket over up to four UPI links. Riser 1 (slots 1–3) hangs off CPU 1 and Riser 2 (slots 4–6) off CPU 2, which is why one-processor builds lose the middle riser.

Network adapters Lenovo lists

31 options
AdapterPortsForm
Broadcom 5719 1GbE RJ45 4-port OCP Ethernet Adapter4 × 1GbEOCP 3.0
Intel I350 1GbE RJ45 4-Port OCP Ethernet Adapter V24 × 1GbEOCP 3.0
Broadcom 57412 10GBase-T 4-Port OCP Ethernet Adapter4 × 10GBase-TOCP 3.0
Broadcom 57416 10GBASE-T 2-port OCP Ethernet Adapter2 × 10GBASE-TOCP 3.0
Intel X710-T2L 10GBASE-T 2-port OCP Ethernet Adapter2 × 10GBASE-TOCP 3.0
Intel X710-T4L 10GBase-T 4-Port OCP Ethernet Adapter4 × 10GBase-TOCP 3.0
Broadcom 57414 10/25GbE SFP28 2-Port OCP Ethernet Adapter2 × 10/25GbEOCP 3.0
Broadcom 57504 10/25GbE SFP28 4-Port OCP Ethernet Adapter4 × 10/25GbEOCP 3.0
Intel E810-DA2 10/25GbE SFP28 2-Port OCP Ethernet Adapter2 × 10/25GbEOCP 3.0
Intel E810-DA4 10/25GbE SFP28 4-Port OCP Ethernet Adapter4 × 10/25GbEOCP 3.0
Mellanox ConnectX-6 Lx 10/25GbE SFP28 2-port OCP Ethernet Adapter2 × 10/25GbEOCP 3.0
Broadcom 57508 100GbE QSFP56 2-Port OCP Ethernet Adapter2 × 100GbEOCP 3.0
Broadcom 5719 1GbE RJ45 4-Port PCIe Ethernet Adapter4 × 1GbEPCIe
I350-T4 PCIe 1Gb 4-Port RJ45 Ethernet Adapter4 × 1GbPCIe
Broadcom 57412 10GBase-T 4-Port PCIe Ethernet Adapter4 × 10GBase-TPCIe
Broadcom 57416 10GBASE-T 2-Port PCIe Ethernet Adapter2 × 10GBASE-TPCIe
Intel X710-T2L 10GBase-T 2-Port PCIe Ethernet Adapter2 × 10GBase-TPCIe
Intel X710-T4L 10GBase-T 4-Port PCIe Ethernet Adapter4 × 10GBase-TPCIe
Broadcom 57414 10/25GbE SFP28 2-port PCIe Ethernet Adapter2 × 10/25GbEPCIe
Broadcom 57504 10/25GbE SFP28 4-port PCIe Ethernet Adapter4 × 10/25GbEPCIe
Intel E810-DA2 10/25GbE SFP28 2-Port PCIe Ethernet Adapter2 × 10/25GbEPCIe
Intel E810-DA4 10/25GbE SFP28 4-Port PCIe Ethernet Adapter4 × 10/25GbEPCIe
Mellanox ConnectX-6 Lx 10/25GbE SFP28 2-port PCIe Ethernet Adapter2 × 10/25GbEPCIe
Solarflare X2522-Plus 10/25GbE SFP28 2-Port PCIe Ethernet Adapter2 × 10/25GbEPCIe
Broadcom 57508 100GbE QSFP56 2-Port PCIe 4 Ethernet Adapter2 × 100GbEPCIe
Mellanox ConnectX-6 Dx 100GbE QSFP56 2-port PCIe Ethernet Adapter2 × 100GbEPCIe
Mellanox ConnectX-6 HDR100/100GbE QSFP56 1-port PCIe VPI Adapter1 × HDR100/100GbEPCIe
NVIDIA BlueField-3 B3220 VPI QSFP112 2P 200G PCIe Gen5 x16 with Tin Plating Connector2 × 200GbEPCIe
Mellanox ConnectX-6 HDR/200GbE QSFP56 1-port PCIe 4 VPI Adapter1 × HDR/200GbEPCIe
NVIDIA ConnectX-7 NDR200/200GbE QSFP112 2-port PCIe Gen5 x16 InfiniBand Adapter2 × NDR200/200GbEPCIe
NVIDIA ConnectX-7 NDR400 OSFP 1-port PCIe Gen5 VPI Adapter1 × NDR400PCIe
  • Only one OCP slot can be used: fitting the front slots disconnects the rear OCP position.
  • Riser 3 uses the same PCIe connectors as the onboard NVMe ports. Lenovo’s riser rules call the two mutually exclusive, while its NVMe notes allow up to 12 onboard NVMe drives with Riser 3 fitted and an adapter for 16 or more.
  • All ten rear slots are offered only with 8 or 16 front 2.5-inch SAS/SATA or AnyBay bays; other front layouts may need a special bid.
  • UPI runs at up to 16 GT/s with 4th Gen and 20 GT/s with 5th Gen, over two to four links depending on the SKU.
  • The x8 slots are open-ended, so they physically accept x16 cards.
06 — Power & cooling

11 power supplies, 750–2,600 W

Eleven hot-swap supplies are listed, from 750 W to 2600 W: Titanium and Platinum AC units for 230 V, two Platinum units that also run from 110 V, and an 1100 W supply for −48 V DC telco racks. Up to two are fitted as a redundant pair, and both must be the same model.

050010001500200025003000750 W Platinum — AC input power - 80 PLUS Platinum efficiency; input 230V/115V; max quantity 2750Platinum750 W Titanium — AC input power - 80 PLUS Titanium efficiency; input 230V; max quantity 2750Titanium750 W Titanium — AC input power - 80 PLUS Titanium efficiency; input 230V; max quantity 2750Titanium1100 W n/a (DC input) — -48V DC input power; input -48V DC; max quantity 21100DC1100 W Platinum — AC input power - 80 PLUS Platinum efficiency; input 230V/115V; max quantity 21100Platinum1100 W Titanium — AC input power - 80 PLUS Titanium efficiency; input 230V; max quantity 21100Titanium1800 W Platinum — input 230V; max quantity 21800Platinum1800 W Titanium — AC input power - 80 PLUS Titanium efficiency; input 230V; max quantity 21800Titanium1800 W Titanium — AC input power - 80 PLUS Titanium efficiency; input 230V; max quantity 21800Titanium2400 W Platinum — input 230V; max quantity 22400Platinum2600 W Titanium — AC input power - 80 PLUS Titanium efficiency; input 230V; max quantity 22600TitaniumWatts · dashed line = output at 100–120 V low line
AC−48 V DC
  • Supplies up to 1800 W take a C14 inlet; the 2400 W and 2600 W units use C20.
  • Larger supplies protrude further: 732 mm from the rack flange to the PSU handle with 1100 W or smaller, 755 mm with 1800 W and 781 mm with 2400 W.
  • The −48 V unit accepts −48 to −60 V DC and draws up to 26 A.
  • Each supply has its own integrated fan; the chassis adds five (one CPU) or six (two CPUs) hot-swap 60 mm fans with N+1 redundancy.
  • In China only, every supply also accepts 240 V DC.
07 — Management, security & OS

Run it, secure it, choose the OS

Management

  • XClarity Controller 2 (XCC2) on an ASPEED AST2600 BMC
  • XCC2 Platinum upgrade: remote console, virtual media, power capping, System Guard, Neighbor Group
  • Dedicated rear 1GbE management port · optional Redundant System Management Port Adapter
  • XClarity Provisioning Manager (UEFI, F1 at boot)
  • XClarity One cloud management (licensed per endpoint)
  • XClarity Essentials: OneCLI, UpdateXpress, Bootable Media Creator
  • XClarity Energy Manager · Lenovo Capacity Planner
  • Redfish REST API, IPMI 2.0 (IPMI-over-LAN off by default), SNMP 3.0
  • XClarity Mobile via the front USB port · optional External Diagnostics Handset

Security

  • Platform Firmware Resiliency hardware Root of Trust (NIST SP 800-193)
  • Integrated TPM 2.0 · Nationz TPM 2.0 in China only
  • UEFI Secure Boot — enabled in the factory or left for the customer
  • System Guard component-change detection (XCC2 Platinum)
  • Self-encrypting drives with KMIP key managers (IBM SKLM, Thales KeySecure)
  • Intel TDX, SGX and TME/MKTME
  • CNSA-compliant and FIPS 140-3-compliant XCC2 security modes (Platinum)
  • Optional chassis intrusion switch and lockable front bezel
  • NIST SP 800-147B compliant

Operating systems

  • Microsoft Windows Server 2019, 2022 and 2025
  • Windows 10 and 11 (dedicated base models; subset of adapters)
  • Red Hat Enterprise Linux 8, 9 and 10
  • SUSE Linux Enterprise Server 15 and 16
  • Ubuntu 20.04, 22.04, 24.04 and 26.04 LTS
  • VMware ESXi 7.0 U3, 8.0, 9.0 and 9.1 (factory preload available)
08 — Compare

SR650 V2 → SR650 V3 → SR650 V4

Lenovo’s own comparison tables place the SR650 V3 between the previous-generation SR650 V2 and the Xeon 6-based SR650 V4. The V4 guide quotes only 4th Gen figures for the V3 (60 cores, 350 W), so the V3 column here uses the V3 guide’s own specifications, which include 5th Gen.

Previous generationThinkSystem SR650 V2
This modelThinkSystem SR650 V3
SuccessorThinkSystem SR650 V4
Processors
2 × 3rd Gen Xeon Scalable · up to 40 cores · 270 W
2 × 4th or 5th Gen Xeon Scalable · up to 64 cores · 385 W
2 × Xeon 6700/6500 P-core · up to 86 cores · 350 W
PCIe lanes per CPU
64 × PCIe 4.0
80 × PCIe 5.0
88 × PCIe 5.0
Memory
DDR4 to 3200 MHz · 32 DIMMs · Optane PMem 200
DDR5 to 5600 MHz · 32 DIMMs · 9x4 RDIMMs
DDR5 to 6400 MHz · 32 DIMMs · MRDIMMs, CXL 2.0
Maximum memory
8 TB
8 TB
8 TB
Drive bays
20 × 3.5" or 40 × 2.5"
20 × 3.5" or 40 × 2.5"
16 × 3.5", 40 × 2.5" or 32 × E3.S
Onboard NVMe ports
8
20
36
PCIe slots
Up to 8, all full-height
Up to 10 rear + 2 front
Up to 10 rear, all PCIe 5.0
OCP 3.0
1 × rear, PCIe 4.0 x16
1 × rear (Gen5) or front (Gen4)
2 × rear, PCIe 5.0
GPUs
8 single-wide or 3 double-wide
8 single-wide or 3 double-wide
10 single-wide or 2 double-wide
Management
XClarity Controller
XClarity Controller 2
XClarity Controller 3
AC power supplies
500–1800 W
750–2600 W
800–3200 W

Source: Lenovo Press LP1601 (SR650 V3 product guide), Table 2 — SR650 V3 vs SR650 V2; Lenovo Press LP2127 (SR650 V4 product guide), Table 1 — SR650 V4 vs SR650 V3.

The SR650 V3 family side by side

The SR650 V3 shares its V3 generation with a 1U Intel sibling (SR630 V3), two AMD EPYC 2U machines — the two-socket SR665 V3 and single-socket SR655 V3 — the four-socket SR850 V3 and the ST650 V3 tower; the SR650 V4 is its Xeon 6 successor. The bars compare limits taken from each model’s own spec file.

SR650 V3SR630 V3SR665 V3SR655 V3SR850 V3ST650 V3SR650 V4Cores / CPUSR650 V3: 6464SR630 V3: 6464SR665 V3: 160160SR655 V3: 160160SR850 V3: 6060ST650 V3: 3232SR650 V4: 8686DIMM slotsSR650 V3: 3232SR630 V3: 3232SR665 V3: 2424SR655 V3: 1212SR850 V3: 6464ST650 V3: 3232SR650 V4: 3232Max memorySR650 V3: 8 TB8SR630 V3: 8 TB8SR665 V3: 6 TB6SR655 V3: 3 TB3SR850 V3: 16 TB16ST650 V3: 4 TB4SR650 V4: 8 TB8Max drive baysSR650 V3: 4040SR630 V3: 1616SR665 V3: 4040SR655 V3: 4040SR850 V3: 2424ST650 V3: 3232SR650 V4: 4040Max GPUsSR650 V3: 88SR630 V3: 33SR665 V3: 77SR655 V3: 88SR850 V3: 44ST650 V3: 88SR650 V4: 1010Largest PSUSR650 V3: 2,600 W2,600SR630 V3: 1,800 W1,800SR665 V3: 2,600 W2,600SR655 V3: 2,600 W2,600SR850 V3: 2,700 W2,700ST650 V3: 2,600 W2,600SR650 V4: 3,200 W3,200
This modelSiblings and successorEach value from that model’s own verified spec file · bars scale per column

Head-to-head comparisons

Every figure on this page, set against the machines buyers weigh it up with.

vs R760vs R760xsvs R7625vs R770vs R7725vs DL380 Gen11vs DL380a Gen11vs DL385 Gen11
SR630 V3 data sheetSR665 V3 data sheetSR655 V3 data sheetSR850 V3 data sheetST650 V3 data sheetSR650 V4 data sheetSR650 V3 vs Dell R760 vs HPE DL380 Gen12SR650 V3 vs R760 vs DL380 Gen11Dell PowerEdge R760 data sheetHPE DL380 Gen11 buyer’s guide
09 — Use cases

Five builds that suit the SR650 V3

Five builds matched to what the SR650 V3 does well, each using only options our configurator allows on this model. Open one to adjust it; we check Lenovo’s thermal, riser and fan rules for the exact combination when we quote.

Virtualisation

All-NVMe cluster node

A pair of 32-core 5th Gen processors with 1 TB at one DIMM per channel, eight NVMe drives for a hyperconverged or local datastore and a mirrored M.2 boot pair. The 6548Y+ runs memory at up to 5200 MT/s, so the 5600 MHz DIMMs clock down to match.

  • 2 × Xeon Gold 6548Y+ — 32 cores @ 2.5 GHz, 250 W each
  • 16 × 64 GB TruDDR5 — 1 TB, one DIMM per channel
  • 8 × 7.68 TB NVMe U.3 (PCIe 4.0)
  • 2 × 480 GB M.2 NVMe boot, RAID 1
  • Intel E810-DA2 2 × 25GbE OCP 3.0
  • 2 × 1100 W Titanium
  • VMware ESXi 9.0
Open this build in the configurator →
Databases

Per-core-licensed SQL Server host

Sixteen 3.6 GHz cores per socket keep core-based licence counts down, while a RAID 940 in Tri-Mode puts U.3 NVMe drives under hardware RAID on the same AnyBay backplane.

  • 2 × Xeon Gold 6544Y — 16 cores @ 3.6 GHz, 270 W each
  • 16 × 64 GB TruDDR5 — 1 TB
  • 8 × 3.84 TB NVMe U.3 on an 8-bay AnyBay backplane
  • RAID 940-8i with 8 GB flash cache (Tri-Mode)
  • 2 × 480 GB M.2 boot
  • Broadcom 57414 2 × 25GbE OCP 3.0
  • Windows Server 2025

Tri-Mode links each NVMe drive to the controller over a single PCIe lane, and 270 W processors need the Performance fans.

Open this build in the configurator →
AI inference

Three-GPU inference server

Three double-wide NVIDIA L40S cards (48 GB each) in slots 2, 5 and 7 — the most the chassis takes — with 5th Gen Platinum cores and a 100GbE OCP uplink, so no GPU slot is spent on networking.

  • 2 × Xeon Platinum 8562Y+ — 32 cores @ 2.8 GHz, 300 W each
  • 3 × NVIDIA L40S 48 GB, double-wide
  • 16 × 64 GB TruDDR5 — 1 TB
  • 16 front 2.5-inch bays (8 NVMe + 8 AnyBay), 4 × 7.68 TB NVMe fitted
  • Broadcom 57508 2 × 100GbE OCP 3.0
  • 2 × 2600 W Titanium
  • Ubuntu Server 24.04 LTS

The L40S is a Controlled GPU, sold only on Lenovo’s “for AI” base models. Lenovo documents three double-wide cards with the 16-bay 2.5-inch front (two with 24 bays), and GPU servers take no mid or rear drives. The third card sits on Riser 3, which shares PCIe connectors with the onboard NVMe ports, and air-cooled GPU servers are limited to 30 °C inlet air.

Open this build in the configurator →
Backup & archive

20-bay LFF backup repository

The 3.5-inch chassis at full stretch — twelve front, four mid and four rear bays — filled with 20 TB SATA drives behind a single 16-port RAID controller for a backup repository or archive tier.

  • 2 × Xeon Silver 4514Y — 16 cores @ 2 GHz, 150 W each
  • 20 × 20 TB 3.5-inch SATA — 400 TB raw
  • 12 front + 4 mid + 4 rear 3.5-inch bays
  • RAID 940-16i with 8 GB flash cache
  • 16 × 32 GB TruDDR5 — 512 GB, at 4400 MT/s on this processor
  • Broadcom 57504 4 × 25GbE OCP 3.0
  • 2 × 1100 W Titanium
  • Windows Server 2025

Mid and rear bays call for the Performance fans and limit inlet air to 30 °C, and the mid-cage drives are simple-swap. Lenovo’s matrix narrows the M.2 choices for this layout, so we confirm the boot device at quotation.

Open this build in the configurator →
Telco & network functions

−48 V DC network-function server

For DC-powered telco rooms: the 1100 W −48 V supply, 5th Gen Gold 6538N processors with QuickAssist and Dynamic Load Balancer engines on board, and four 25GbE ports in the OCP slot.

  • 2 × Xeon Gold 6538N — 32 cores @ 2.1 GHz, 205 W each
  • 16 × 32 GB TruDDR5 — 512 GB
  • 4 × 1.92 TB SATA SSD
  • 2 × 480 GB M.2 boot
  • Intel E810-DA4 4 × 25GbE OCP 3.0
  • 2 × 1100 W −48 V DC hot-swap
  • Red Hat Enterprise Linux 9

The DC supply uses the 2.5 m −48 V DC interconnecting cable Lenovo lists for it and a −48 to −60 V feed, and both supplies in the server must be the same model.

Open this build in the configurator →
10 — Refurbished alternatives

When a refurbished server makes more sense

Lenovo ThinkSystem isn’t in our refurbished configurator, so the nearest re-certified alternatives are Dell and HPE two-socket 2U servers from the DDR4 era. They run DDR4 rather than DDR5, but suit projects where a proven previous-generation platform is enough.

Gen10 Plus · re-certified

HPE ProLiant DL380 Gen10 Plus

  • 2U · two sockets
  • 32 DIMM slots · up to 8 TB DDR4
  • Up to 24 × SFF or 12 × LFF
  • DDR4-3200 · PCIe 4.0 · OCP 3.0 · iLO 5

The closest match in memory layout — 32 DIMM slots and OCP 3.0 networking — for virtualisation and database refreshes.

Configure a refurbished DL380 Gen10 Plus →
14G · re-certified

Dell PowerEdge R740xd

  • 2U · two sockets
  • 24 DIMM slots · up to 3 TB DDR4
  • Up to 24 × 2.5" or 12 × 3.5"
  • Up to 24 NVMe · iDRAC9

Capacity-led jobs such as backup targets and software-defined storage, where 24 SFF or 12 LFF bays are enough.

Configure a refurbished R740xd →
Gen10 · re-certified

HPE ProLiant DL380 Gen10

  • 2U · two sockets
  • 24 DIMM slots · up to 3 TB DDR4
  • Up to 24 × SFF or 12 × LFF
  • GPU-capable · iLO 5

A general-purpose 2U for virtualisation, databases and mixed use where 24 DIMM slots are enough.

Configure a refurbished DL380 Gen10 →
Refurbished Lenovo serversRefurbished HPE configuratorRefurbished Dell configuratorNew vs refurbished cost calculator
11 — Full specifications

Lenovo ThinkSystem SR650 V3 specifications

Chassis & cooling

Form factor2U rack server
Machine types7D75 (1-year warranty) · 7D76 (3-year warranty) · 7D77 (SAP HANA configurations)
Dimensions (W × H × D)445 × 87 × 766 mm · 482 mm wide across the EIA flanges
Weight21.4 kg base configuration · 38.8 kg maximum
Fans5 (one CPU) or 6 (two CPUs) hot-swap 60 mm, N+1 · Standard 17K RPM single-rotor or Performance 21K RPM dual-rotor
Liquid coolingOptional Neptune Processor DWC Module (open loop, factory-installed only)
ChipsetIntel C741

Processor

SocketsOne or two
Families4th Gen and 5th Gen Intel Xeon Scalable
Cores per processorUp to 60 (4th Gen) · up to 64 (5th Gen)
Maximum TDP350 W (4th Gen) · 385 W (5th Gen)
UPIUp to 4 links · 16 GT/s (4th Gen) or 20 GT/s (5th Gen)
PCIe lanesUp to 80 × PCIe 5.0 per processor

Memory

Slots32 DDR5 · 16 per processor · 8 channels × 2 DIMMs
TypesTruDDR5 RDIMM, 9x4 RDIMM and 3DS RDIMM (no UDIMM or LRDIMM)
DIMM sizes16, 32, 64, 96, 128 and 256 GB
Speed5th Gen: 5600 MT/s at 1 DPC (3DS 5200), 4400 MT/s at 2 DPC (Performance+ 4800) · 4th Gen: 4800 / 4400 MT/s
Maximum8 TB (32 × 256 GB 3DS RDIMM)
ProtectionECC, SDDC (x4 DIMMs), ADDDC (x4 DIMMs except 9x4; Gold or Platinum processors), memory mirroring (not with 9x4)
Persistent memoryNot supported

Storage

Front8 or 12 × 3.5" · 8, 16 or 24 × 2.5" (SAS/SATA, NVMe or AnyBay; Gen4 or Gen5 NVMe)
Mid-chassis4 × 3.5" or 8 × 2.5" simple-swap
Rear2 or 4 × 3.5" · 4 or 8 × 2.5" hot-swap
Maximum20 × 3.5" or 40 × 2.5" · up to 36 NVMe
Boot2 × internal M.2 or 2 × rear 7mm hot-swap (not both)
Onboard14 SATA ports · up to 20 NVMe ports (Intel VROC)
AdaptersRAID 540 / 940 (8, 16 or 32 ports, up to 8 GB flash) · 440 HBAs · NVMe retimers

Expansion & networking

PCIe slotsUp to 12: 10 rear on four risers + 2 front x16 PCIe 4.0
OCP1 × OCP 3.0 SFF — rear PCIe 5.0 x16 or front PCIe 4.0 x16
InternalDedicated bay for a cabled RAID adapter or HBA (2.5-inch chassis)
SerialOptional DB-9 COM port in slot 3 or 6

Accelerators

GPU envelopeUp to 8 × single-wide or 3 × double-wide
Double-wide slots2, 5 and 7
CXLCXL 1.1 ready

Power

SuppliesUp to two hot-swap, redundant; both must be identical
AC Titanium750, 1100, 1800 and 2600 W (230 V)
AC Platinum750 and 1100 W (230 V / 115 V) · 1800 and 2400 W (230 V)
DC1100 W, −48 to −60 V DC

Ports & video

Front1 × USB 3.2 Gen 1 · 1 × USB 2.0 (also XCC) · external diagnostics port · optional VGA
Rear3 × USB 3.2 Gen 1 · 1 × VGA · 1 × 1GbE XCC management · optional DB-9 serial
Internal1 × USB 3.2 Gen 1 · MicroSD slot for XCC2
Video16 MB, integrated in XCC2 · up to 1920 × 1200 at 60 Hz

Environment & warranty

ASHRAEClass A2 in most configurations; A3, A4 or H1 depending on configuration
Operating temperature10–35 °C (A2)
Maximum altitude3,050 m
Warranty1 or 3 years by model · customer-replaceable units and onsite, 9 × 5 next business day
12 — FAQ

SR650 V3 questions, answered from the documentation

What is the maximum memory of the Lenovo ThinkSystem SR650 V3?

With two processors it holds 8 TB, filling all 32 DIMM slots with 256 GB 3DS RDIMMs. Those are 5600 MHz parts, which Lenovo’s configurator pairs with 5th Gen Xeon, so a 4th Gen server reaches 4 TB with 32 × 128 GB. A one-processor build has 16 slots and a 4 TB ceiling.

Which processors does the SR650 V3 support?

Lenovo lists 84: 32 5th Gen and 52 4th Gen Intel Xeon Scalable models, from 8 to 64 cores and 115 W to 385 W. The top part is the 64-core, 385 W Platinum 8593Q. Sixteen SKUs, including every U-suffix model, are single-socket only.

How many drives can the SR650 V3 hold?

Up to 40 × 2.5-inch drives (24 front, 8 mid, 8 rear) or 20 × 3.5-inch drives (12 front, 4 mid, 4 rear), plus either two rear 7mm or two internal M.2 boot drives. Up to 36 of the 2.5-inch bays can be NVMe, each with a dedicated x4 link.

How many GPUs does the SR650 V3 support?

Up to eight single-wide or three double-wide GPUs. Lenovo documents the three-card limit with 16 front 2.5-inch bays and a two-card limit with 24, and GPU servers cannot use mid or rear drive bays or 12 × 3.5-inch backplanes. Lenovo currently lists the NVIDIA L4, RTX A1000, RTX A400 and L40S.

How many PCIe slots does the SR650 V3 have?

Up to 12 plus an OCP 3.0 slot: ten at the rear across four risers, and two PCIe 4.0 x16 slots at the front in layouts with up to 16 drive bays. Rear slots run at PCIe 5.0 or 4.0 depending on the riser, and some need the second processor.

What power supplies are available for the SR650 V3?

Eleven hot-swap options: ten Titanium and Platinum AC units from 750 W to 2600 W, plus an 1100 W −48 V DC unit. Lenovo’s power-supply table marks only the 750 W and 1100 W Platinum units as 110 V-capable; the other AC units are 230 V models. A server takes up to two supplies, and both must be identical.

How big and heavy is the SR650 V3?

The chassis is 445 mm wide (482 mm across the rack flanges), 87 mm high and 766 mm deep. It weighs 21.4 kg in its base configuration and up to 38.8 kg fully built; Lenovo’s enhanced rail kits are for servers of 34 kg or more shipped in a rack.

What changed between the SR650 V3 and the SR650 V4?

The V4 switches to Intel Xeon 6 processors — up to 86 P-cores and 88 PCIe 5.0 lanes each — DDR5 at up to 6400 MHz with MRDIMM support, up to 32 E3.S bays, two OCP slots and XClarity Controller 3. It lists two double-wide GPUs rather than three, and 16 rather than 20 3.5-inch bays.

How does the SR650 V3 differ from the SR630 V3 and SR665 V3?

The SR630 V3 is the 1U model with the same Xeon families and 32 DIMM slots, but Lenovo lists it for up to three GPUs and supplies of up to 1800 W. The SR665 V3 is the 2U AMD alternative, with EPYC 9004 and 9005 processors of up to 160 cores, 24 DIMM slots and 6 TB of memory.

Is the Lenovo ThinkSystem SR650 V3 end of life?

Lenovo’s product guide still lists the SR650 V3 with currently supported processors and options, and it gives no end-of-service date for the model. The base warranty is one or three years depending on machine type, with optional one- or two-year extensions from Lenovo Services. Our end-of-life checker is the place to look for any dates Lenovo publishes later.

Sources & verification

Where these figures come from

Specifications are extracted from Lenovo’s published documents and independently re-checked line by line. Configurations are quote-based; availability and exact options are confirmed at quotation. Last reviewed 2026-09-11.

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