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Head-to-head · every figure from the vendor documents

HPE DL345 Gen12 vs Lenovo SR655 V3

A specification-by-specification comparison of the HPE ProLiant Compute DL345 Gen12 and the Lenovo ThinkSystem SR655 V3, built from HPE’s and Lenovo’s own documents. 3 headline measures favour the DL345 Gen12, 2 favour the SR655 V3, and 21 processors appear in both lists.

Bottom line. DL345 Gen12 leads on virtualisation, databases and in-memory work. SR655 V3 leads on storage density, AI and acceleration. Neither vendor publishes benchmarks for these machines, so every call here is made on what their documents state.

HPE ProLiant Compute DL345 Gen12 in the 8LFF chassis: eight LFF bays, two SFF bays and an optical drive, with the model badge on the right ear
HPE ProLiant
DL345 Gen12
2U Rack1 socket24 DIMMHPE iLO 7
Configure the DL345 Gen12 →Full data sheet
VS
Lenovo ThinkSystem SR655 V3 2U chassis from the front: 24 numbered 2.5-inch hot-swap bays, VGA port on the left, USB ports on the right
Lenovo ThinkSystem
SR655 V3
2U Rack1 socket12 DIMMXClarity Controller 2
Configure the SR655 V3 →Full data sheet
01 — Scoreboard

The measures that decide it

Each row is a figure both vendors publish. Bars show the split between the two; a badge marks the larger figure, which is not always the better buy — a shallower chassis or a lower power ceiling can matter more.

1
Processor sockets
1
192Higher
Cores, fully populated
Largest listed processor × its socket count
160
6 TBHigher
Memory ceiling
As each document states it
3 TB
36
Drive bays
Higher40
Up to 6
Accelerators
HigherUp to 8
3,200 WHigher
Largest power supply
2,600 W
2U Rack
Rack height
2U Rack
400 GbE class
Fastest network option
400 GbE class
02 — Verdict

Which one, and why

Drawn from the measures above and each model’s own data sheet. Neither vendor publishes benchmark results for these servers, so nothing here claims one is “faster”.

Choose the DL345 Gen12 if…

  • Cores, fully populated: 192 against 160 on the SR655 V3
  • Memory ceiling: 6 TB against 3 TB on the SR655 V3
  • Largest power supply: 3,200 W against 2,600 W on the SR655 V3
  • Up to 192 cores behind a single socket, with the 500 W EPYC 9965 and 9755 on HPE’s list.

Choose the SR655 V3 if…

  • Drive bays: 40 against 36 on the DL345 Gen12
  • Accelerators: Up to 8 against Up to 6 on the DL345 Gen12
  • A whole 2U storage chassis on one processor: drive bays at the front, in the middle and at the rear reach 40 × 2.5-inch or 20 × 3.5-inch, and up to 32 of the 2.5-inch bays can be NVMe through switch adapters, or 24 when each drive needs its own x4 link.
03 — By workload

Where each one pulls ahead

Calls made on documented capacity only — cores, memory, bays, accelerators and network options — with the figures behind each one shown.

VirtualisationDL345 Gen12: 192 cores with 6 TB. SR655 V3: 160 cores with 3 TB.DL345 Gen12
Databases & in-memoryMemory ceiling 6 TB against 3 TB, across 24 and 12 DIMM slots.DL345 Gen12
Storage density36 bays in 2U against 40 in 2U.SR655 V3
AI & acceleration6 accelerators against 8 in the vendor documents.SR655 V3
Network throughputFastest card listed: 400 GbE class against 400 GbE class.Line ball
04 — Specifications

Side by side, differences first

Everything both documents state, grouped. The default view hides rows where the two machines are identical.

Processors

Every processor each vendor lists for the model, from its own document.

SpecificationDL345 Gen12SR655 V3
Processors listed2345
Most cores per processor192160
Highest processor TDP500 W400 W
Processor familiesAMD EPYC 9005AMD EPYC 9005 · AMD EPYC 9004

Memory

SpecificationDL345 Gen12SR655 V3
DIMM slots2412
Slots per processor2412
Memory typesRDIMM DDR5-6400 (HPE DDR5 Smart Memory, Registered, EC8) · RDIMM 3DS DDR5-6400 (256 GB Quad Rank x4)RDIMM DDR5-6400 (5th Gen EPYC) · RDIMM DDR5-4800 (4th Gen EPYC) · 9x4 RDIMM · 3DS RDIMM DDR5-6400

Storage

Bay counts are the maximum each document states, including rear and mid-chassis positions.

SpecificationDL345 Gen12SR655 V3
Maximum bays3640
Documented layouts824
Bay sizes3.5-inch · 2.5-inch · E3.S3.5-inch · 2.5-inch
Boot devicesHPE NS204i-u v2 480GB NVMe Hot Plug Boot Optimized Storage Device · HPE NS204i-u v2 960GB NVMe Hot Plug Boot Optimized Storage Device · HPE NS204i-u v2 960GB NVMe SED Hot Plug Boot Optimized Storage Device + 2 moreM.2 SATA/NVMe 2-Bay Enablement Kit (4Y37A09738) · M.2 SATA/x4 NVMe 2-Bay Adapter (4Y37A79663) · M.2 NVMe 2-Bay RAID Adapter (4Y37A09750) + 1 more
Storage controllers1122

Accelerators & I/O

SpecificationDL345 Gen12SR655 V3
Accelerators supportedUp to 6Up to 8
Double-wide cards listed27
OCP slots21
PCIe network slots610
Network cards listed3532

Power & platform

SpecificationDL345 Gen12SR655 V3
Power-supply options710
Output range800–3,200 W750–2,600 W
ManagementHPE iLO 7XClarity Controller 2
Chassis depthVendors measure depth differently — see each data sheet8LFF CTO: 65.61 cm / 25.83 in deep766 mm
05 — The data

Processors, memory, bays and power

The same charts each data sheet carries, drawn to the same scale so the two ranges can be read against each other.

DL345 Gen12: processors by cores and TDP

HPE ProLiant Compute DL345 Gen12 processors081624324048566472808896104112120128136144152160168176184192100 W150 W200 W250 W300 W350 W400 W450 W500 WCores per processorAMD EPYC 9965 — 192 cores · 500 W · 2.25 GHz base · 384 MB cache · DDR5-6400AMD EPYC 9845 — 160 cores · 390 W · 2.1 GHz base · 320 MB cache · DDR5-6400AMD EPYC 9825 — 144 cores · 390 W · 2.2 GHz base · 384 MB cache · DDR5-6400AMD EPYC 9755 — 128 cores · 500 W · 2.7 GHz base · 512 MB cache · DDR5-6400AMD EPYC 9745 — 128 cores · 400 W · 2.4 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9655P — 96 cores · 400 W · 2.6 GHz base · 384 MB cache · DDR5-6400AMD EPYC 9645 — 96 cores · 320 W · 2.3 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9565 — 72 cores · 400 W · 3.15 GHz base · 384 MB cache · DDR5-6400AMD EPYC 9575F — 64 cores · 400 W · 3.3 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9555P — 64 cores · 360 W · 3.2 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9535 — 64 cores · 300 W · 2.4 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9475F — 48 cores · 400 W · 3.65 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9455P — 48 cores · 300 W · 3.15 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9365 — 36 cores · 300 W · 3.4 GHz base · 192 MB cache · DDR5-6400AMD EPYC 9375F — 32 cores · 320 W · 3.8 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9355P — 32 cores · 280 W · 3.55 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9335 — 32 cores · 210 W · 3 GHz base · 128 MB cache · DDR5-6400AMD EPYC 9275F — 24 cores · 320 W · 4.1 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9255 — 24 cores · 200 W · 3.2 GHz base · 128 MB cache · DDR5-6400AMD EPYC 9175F — 16 cores · 320 W · 4.2 GHz base · 512 MB cache · DDR5-6400AMD EPYC 9135 — 16 cores · 200 W · 3.65 GHz base · 64 MB cache · DDR5-6400AMD EPYC 9115 — 16 cores · 125 W · 2.6 GHz base · 64 MB cache · DDR5-6400AMD EPYC 9015 — 8 cores · 125 W · 3.6 GHz base · 64 MB cache · DDR5-6400EPYC 9965192 cores — the top SKUEPYC 98452.4 W/core — most efficient
AMD EPYC 9005 23Bubble size = L3 cache · hover a bubble for the full SKU

SR655 V3: processors by cores and TDP

Lenovo ThinkSystem SR655 V3 processors081624324048566472808896104112120128136144152160100 W150 W200 W250 W300 W350 W400 WCores per processorAMD EPYC 9845 — 160 cores / 320 threads · 390 W · 2.1 GHz base · 320 MB cache · DDR5-6400AMD EPYC 9825 — 144 cores / 288 threads · 390 W · 2.2 GHz base · 384 MB cache · DDR5-6400AMD EPYC 9745 — 128 cores / 256 threads · 400 W · 2.4 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9655 — 96 cores / 192 threads · 400 W · 2.6 GHz base · 384 MB cache · DDR5-6400AMD EPYC 9655P — 96 cores / 192 threads · 400 W · 2.6 GHz base · 384 MB cache · DDR5-6400AMD EPYC 9645 — 96 cores / 192 threads · 320 W · 2.3 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9565 — 72 cores / 144 threads · 400 W · 3.15 GHz base · 384 MB cache · DDR5-6400AMD EPYC 9575F — 64 cores / 128 threads · 400 W · 3.3 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9555 — 64 cores / 128 threads · 360 W · 3.2 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9555P — 64 cores / 128 threads · 360 W · 3.2 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9535 — 64 cores / 128 threads · 300 W · 2.4 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9475F — 48 cores / 96 threads · 400 W · 3.65 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9455 — 48 cores / 96 threads · 300 W · 3.15 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9455P — 48 cores / 96 threads · 300 W · 3.15 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9365 — 36 cores / 72 threads · 300 W · 3.4 GHz base · 192 MB cache · DDR5-6400AMD EPYC 9375F — 32 cores / 64 threads · 320 W · 3.8 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9355 — 32 cores / 64 threads · 280 W · 3.55 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9355P — 32 cores / 64 threads · 280 W · 3.55 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9335 — 32 cores / 64 threads · 210 W · 3 GHz base · 128 MB cache · DDR5-6400AMD EPYC 9275F — 24 cores / 48 threads · 320 W · 4.1 GHz base · 256 MB cache · DDR5-6400AMD EPYC 9255 — 24 cores / 48 threads · 200 W · 3.25 GHz base · 128 MB cache · DDR5-6400AMD EPYC 9175F — 16 cores / 32 threads · 320 W · 4.2 GHz base · 512 MB cache · DDR5-6400AMD EPYC 9135 — 16 cores / 32 threads · 200 W · 3.65 GHz base · 64 MB cache · DDR5-6400AMD EPYC 9115 — 16 cores / 32 threads · 125 W · 2.6 GHz base · 64 MB cache · DDR5-6400AMD EPYC 9015 — 8 cores / 16 threads · 125 W · 3.6 GHz base · 64 MB cache · DDR5-6400AMD EPYC 9754 — 128 cores / 256 threads · 360 W · 2.25 GHz base · 256 MB cache · DDR5-4800AMD EPYC 9734 — 112 cores / 224 threads · 340 W · 2.2 GHz base · 256 MB cache · DDR5-4800AMD EPYC 9654 — 96 cores / 192 threads · 360 W · 2.4 GHz base · 384 MB cache · DDR5-4800AMD EPYC 9654P — 96 cores / 192 threads · 360 W · 2.4 GHz base · 384 MB cache · DDR5-4800AMD EPYC 9634 — 84 cores / 168 threads · 290 W · 2.25 GHz base · 384 MB cache · DDR5-4800AMD EPYC 9554 — 64 cores / 128 threads · 360 W · 3.1 GHz base · 256 MB cache · DDR5-4800AMD EPYC 9554P — 64 cores / 128 threads · 360 W · 3.1 GHz base · 256 MB cache · DDR5-4800AMD EPYC 9534 — 64 cores / 128 threads · 280 W · 2.45 GHz base · 256 MB cache · DDR5-4800AMD EPYC 9474F — 48 cores / 96 threads · 360 W · 3.6 GHz base · 256 MB cache · DDR5-4800AMD EPYC 9454 — 48 cores / 96 threads · 290 W · 2.75 GHz base · 256 MB cache · DDR5-4800AMD EPYC 9454P — 48 cores / 96 threads · 290 W · 2.75 GHz base · 256 MB cache · DDR5-4800AMD EPYC 9374F — 32 cores / 64 threads · 320 W · 3.85 GHz base · 256 MB cache · DDR5-4800AMD EPYC 9354 — 32 cores / 64 threads · 280 W · 3.25 GHz base · 256 MB cache · DDR5-4800AMD EPYC 9354P — 32 cores / 64 threads · 280 W · 3.25 GHz base · 256 MB cache · DDR5-4800AMD EPYC 9334 — 32 cores / 64 threads · 210 W · 2.7 GHz base · 128 MB cache · DDR5-4800AMD EPYC 9274F — 24 cores / 48 threads · 320 W · 4.05 GHz base · 256 MB cache · DDR5-4800AMD EPYC 9224 — 24 cores / 48 threads · 200 W · 2.5 GHz base · 64 MB cache · DDR5-4800AMD EPYC 9254 — 24 cores / 48 threads · 200 W · 2.9 GHz base · 128 MB cache · DDR5-4800AMD EPYC 9174F — 16 cores / 32 threads · 320 W · 4.1 GHz base · 256 MB cache · DDR5-4800AMD EPYC 9124 — 16 cores / 32 threads · 200 W · 3 GHz base · 64 MB cache · DDR5-4800EPYC 9845160 cores · 2.4 W/core — top SKU and most efficient
AMD EPYC 9005 25AMD EPYC 9004 20Bubble size = L3 cache · hover a bubble for the full SKU

DL345 Gen12: memory with every slot filled

32 GB768 GB64 GB1.5 TB96 GB2.3 TB128 GB3 TB256 GB6 TB24 slots · 24 per processor · each tick = one DIMM

SR655 V3: memory with every slot filled

16 GB192 GB32 GB384 GB64 GB768 GB96 GB1.1 TB128 GB1.5 TB256 GB3 TB12 slots · 12 per processor · each tick = one DIMM

DL345 Gen12: drive bays

Front panel

8 × 2.5" SAS/SATA + NVMe at the front — 8 bays in total.

SAS/SATANVMeSAS/SATA + NVMe

SR655 V3: drive bays

Front panel

24 × 2.5" SAS/SATA at the front — 24 bays in total.

SAS/SATANVMeSAS/SATA + NVMe

DL345 Gen12: power supplies

0500100015002000250030003500800 W Platinum — HPE 800W M-CRPS Platinum Hot Plug Power Supply Kit. Explicitly excluded from the 96%-efficiency statement ('All of the above power supplies, except P73190-B21, are rated for 96% efficiency') and is NOT on the EU ErP Lot 9 compliant part-number list. Rated steady-state output 650W at 100-120 VAC / 800W at 200-240 VAC. BTU max 2458 (100 VAC) / 2919 (240 VAC).800Platinum1000 W Titanium — HPE 1000W M-CRPS Titanium Hot Plug Power Supply Kit; 96% efficiency; EU ErP Lot 9 compliant. Output 800W at 100-120 VAC / 1000W at 200-240 VAC (and 240 VDC China only). BTU max 3044 / 3680.1000Titanium1300 W null — HPE 1300W M-CRPS -48VDC Hot Plug Power Supply Kit. Requires HPE 1000-1300W -48VDC Power Lug Kit (P79845-B21). Listed only in the Core Options Power Supplies step, not in the Standard Features M-CRPS list.1300DC1500 W Titanium — HPE 1500W M-CRPS Titanium Hot Plug Power Supply Kit; 96% efficiency; EU ErP Lot 9 compliant. Output 1000W at 100 VAC / 1100W at 110-120 VAC / 1500W at 200-240 VAC. BTU max 3792 / 5560.1500Titanium2200 W null — HPE 2200W M-CRPS -48VDC Hot Plug Power Supply Kit. No efficiency rating is printed for the DC supplies. Requires HPE 2000-2200W -48VDC Power Lug Kit (P79839-B21). Listed only in the Core Options Power Supplies step, not in the Standard Features M-CRPS list, and not covered by the BTU/output tables.2200DC2400 W Titanium — HPE 2400W M-CRPS Titanium Hot Plug Power Supply Kit; 96% efficiency; EU ErP Lot 9 compliant. Steady-state 1200W at 100-127 VAC / 2400W at 200-240 VAC; peak 2400W at both line voltages. BTU max 4268 / 8532.2400Titanium3200 W Titanium — HPE 3200W M-CRPS Titanium Hot Plug Power Supply Kit; 96% efficiency; EU ErP Lot 9 compliant. Output 1600W at 100-127 VAC / 3200W at 200-240 VAC. BTU max 5142 / 11699.3200TitaniumWatts · dashed line = output at 100–120 V low line
AC−48 V DC

SR655 V3: power supplies

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 — AC input power - 80 PLUS Platinum efficiency; input 230V; max quantity 21800Platinum1800 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
06 — Like for like

21 processors you can order in either

Both vendor documents list these parts, so a build can be matched across the two and the comparison comes down to the chassis: 2 more are exclusive to the DL345 Gen12 and 24 to the SR655 V3.

ProcessorCoresTDP
AMD EPYC 9845160390 W
AMD EPYC 9825144390 W
AMD EPYC 9745128400 W
AMD EPYC 964596320 W
AMD EPYC 9655P96400 W
AMD EPYC 956572400 W
AMD EPYC 953564300 W
AMD EPYC 9575F64400 W
AMD EPYC 9555P64360 W
AMD EPYC 9475F48400 W
AMD EPYC 9455P48300 W
AMD EPYC 936536300 W
07 — Questions

DL345 Gen12 vs SR655 V3, answered

Is the DL345 Gen12 or the SR655 V3 the faster server?

Neither document publishes benchmark results, so this page compares what they do state. The DL345 Gen12 lists 23 processors up to 192 cores at 500 W; the SR655 V3 lists 45 up to 160 cores at 400 W. Fully populated that is 192 cores against 160.

Which holds more memory?

The DL345 Gen12 has 24 DIMM slots and a stated ceiling of 6.0 TB. The SR655 V3 has 12 and 3 TB.

Which takes more drives?

DL345 Gen12: 36 bays across 8 documented layouts. SR655 V3: 40 across 24. Counts include rear and mid-chassis positions where the vendor documents them.

Can either take GPUs?

DL345 Gen12: up to 6 accelerators, 2 double-wide cards listed. SR655 V3: up to 8, 7 double-wide listed.

Do they share any processors?

Yes — 21 processors appear in both documents, including the AMD EPYC 9845. That makes a like-for-like build possible on either server.

Where these figures come from. DL345 Gen12: HPE ProLiant Compute DL345 Gen12 QuickSpecs (Version 12 - 03-Aug-2026; header prints Version 12 - August 3, 2026) (HPE document). SR655 V3: Lenovo ThinkSystem SR655 V3 Server Product Guide (publication date is not printed in the text export; guide contains 'New as of July 2026' notes) (Lenovo document). Each claim on this page is derived from those documents, checked page by page on the two data sheets, and carries no pricing.

Other comparisons in this class

R570 vs SR655 V3Dell vs LenovoR7615 vs SR655 V3Dell vs LenovoR7715 vs DL345 Gen12Dell vs HPER7715 vs SR655 V3Dell vs LenovoDL340 Gen12 vs SR655 V3HPE vs LenovoDL340e Gen12 vs SR655 V3HPE vs LenovoDL345 Gen11 vs SR655 V3HPE vs LenovoDL345 Gen11 vs DL345 Gen12Generation upgrade

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