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

Dell R6715 vs Lenovo SR635 V3

A specification-by-specification comparison of the Dell PowerEdge R6715 and the Lenovo ThinkSystem SR635 V3, built from Dell’s and Lenovo’s own documents. 2 headline measures favour the R6715, 1 favours the SR635 V3, and 18 processors appear in both lists.

Bottom line. R6715 leads on virtualisation, databases and in-memory work, storage density. SR635 V3 leads on AI and acceleration. Neither vendor publishes benchmarks for these machines, so every call here is made on what their documents state.

Dell PowerEdge R6715 front with 20 EDSFF E3.S drive bays, USB and Mini DisplayPort at the left, power button and USB-C at the right
Dell PowerEdge
R6715
1U Rack1 socket24 DIMMiDRAC10
Configure the R6715 →Full data sheet
VS
Lenovo ThinkSystem SR635 V3 1U front with ten 2.5-inch hot-swap drive bays, front USB and VGA ports and the operator panel
Lenovo ThinkSystem
SR635 V3
1U Rack1 socket12 DIMMXClarity Controller 2
Configure the SR635 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
160
Cores, fully populated
Largest listed processor × its socket count
160
6 TBHigher
Memory ceiling
As each document states it
3 TB
22Higher
Drive bays
16
Up to 3
Accelerators
HigherUp to 5
1,800 W
Largest power supply
1,800 W
1U Rack
Rack height
1U 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 R6715 if…

  • Memory ceiling: 6 TB against 3 TB on the SR635 V3
  • Drive bays: 22 against 16 on the SR635 V3
  • One socket reaches 160 Zen 5 cores with the EPYC 9845; Dell’s 18-processor list starts at the 8-core, 125 W EPYC 9015 and tops out at 400 W.

Choose the SR635 V3 if…

  • Accelerators: Up to 5 against Up to 3 on the R6715
  • All twelve DDR5 channels belong to the one processor, so a single socket still reaches 3 TB with 256 GB 3DS RDIMMs, and 5th Gen EPYC can clock that memory at up to 6400 MHz.
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.

VirtualisationR6715: 160 cores with 6 TB. SR635 V3: 160 cores with 3 TB.R6715
Databases & in-memoryMemory ceiling 6 TB against 3 TB, across 24 and 12 DIMM slots.R6715
Storage density22 bays in 1U against 16 in 1U.R6715
AI & acceleration3 accelerators against 5 in the vendor documents.SR635 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.

SpecificationR6715SR635 V3
Processors listed1845
Processor familiesAMD EPYC 9005AMD EPYC 9005 · AMD EPYC 9004

Memory

SpecificationR6715SR635 V3
DIMM slots2412
Slots per processor2412
Memory typesRDIMM DDR5-6400 (runs at 5200 MT/s 1DPC / 4400-4000 MT/s 2DPC)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.

SpecificationR6715SR635 V3
Maximum bays2216
Documented layouts814
Bay sizes3.5-inch · 2.5-inch · E3.S2.5-inch · E3.S
Boot devicesBOSS-N1 DC-MHS · Internal USBM.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 controllers517

Accelerators & I/O

SpecificationR6715SR635 V3
Accelerators supportedUp to 3Up to 5
OCP slots21
PCIe network slots35
Network cards listed1630

Power & platform

SpecificationR6715SR635 V3
Output range800–1,800 W750–1,800 W
Input typesAC · 277 VAC / HVDCAC · −48 V DC
ManagementiDRAC10XClarity Controller 2
Chassis depthVendors measure depth differently — see each data sheet815.141 mm without bezel / 816.921 mm with bezel—
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.

R6715: processors by cores and TDP

Dell PowerEdge R6715 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 9655P — 96 cores / 192 threads · 400 W · 2.6 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 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 · DDR5-6000AMD 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 · DDR5-6000AMD EPYC 9375F — 32 cores / 64 threads · 320 W · 3.8 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 · 3.2 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 · DDR5-6400EPYC 9845160 cores · 2.4 W/core — top SKU and most efficient
AMD EPYC 9005 18Bubble size = L3 cache · hover a bubble for the full SKU

SR635 V3: processors by cores and TDP

Lenovo ThinkSystem SR635 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

R6715: memory with every slot filled

16 GB384 GB32 GB768 GB64 GB1.5 TB96 GB2.3 TB128 GB3 TB256 GB6 TB24 slots · 24 per processor · each tick = one DIMM

SR635 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

R6715: drive bays

Front panel

20 × EDSFF NVMe at the front — 20 bays in total.

SAS/SATANVMeSAS/SATA + NVMe

SR635 V3: drive bays

Front panel

16 × EDSFF NVMe at the front — 16 bays in total.

SAS/SATANVMeSAS/SATA + NVMe

R6715: power supplies

0500100015002000800 W Platinum — 100-240 VAC or 240 VDC; 60 mm; C13800Platinum800 W Titanium — 100-240 VAC or 240 VDC; 60 mm; C13800Titanium1100 W Platinum — 100-240 VAC (1050 W lowline) or 240 VDC; 60 mm; C131100Platinum1100 W Titanium — 100-240 VAC (1050 W lowline) or 240 VDC; 60 mm; C131100Titanium1400 W Telco (DC) — -48 to -60 VDC; DC power cable1400DC1500 W Titanium — 100-240 VAC (derated to 1050 W at 100-120 VAC) or 240 VDC; 60 mm; C131500Titanium1500 W Titanium — 277 VAC or 336 VDC HVDC; 60 mm; APP/Saf-D-Grid1500Titanium1800 W Titanium — 200-240 VAC or 240 VDC mixed mode; 60 mm; C13; not available at November 2025 launch1800TitaniumWatts · dashed line = output at 100–120 V low line
AC277 VAC / HVDC

SR635 V3: power supplies

0500100015002000750 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 21800TitaniumWatts · dashed line = output at 100–120 V low line
AC−48 V DC
06 — Like for like

18 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: 0 more are exclusive to the R6715 and 27 to the SR635 V3.

ProcessorCoresTDP
AMD EPYC 9845160390 W
AMD EPYC 9825144390 W
AMD EPYC 9745128400 W
AMD EPYC 9655P96400 W
AMD EPYC 9555P64360 W
AMD EPYC 9575F64400 W
AMD EPYC 953564300 W
AMD EPYC 9475F48400 W
AMD EPYC 945548300 W
AMD EPYC 9375F32320 W
AMD EPYC 933532210 W
AMD EPYC 9355P32280 W
07 — Questions

R6715 vs SR635 V3, answered

Is the R6715 or the SR635 V3 the faster server?

Neither document publishes benchmark results, so this page compares what they do state. The R6715 lists 18 processors up to 160 cores at 400 W; the SR635 V3 lists 45 up to 160 cores at 400 W. Fully populated that is 160 cores against 160.

Which holds more memory?

The R6715 has 24 DIMM slots and a stated ceiling of 6 TB. The SR635 V3 has 12 and 3 TB.

Which takes more drives?

R6715: 22 bays across 8 documented layouts. SR635 V3: 16 across 14. Counts include rear and mid-chassis positions where the vendor documents them.

Can either take GPUs?

R6715: up to 3 accelerators, 0 double-wide cards listed. SR635 V3: up to 5, 0 double-wide listed.

Do they share any processors?

Yes — 18 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. R6715: Dell PowerEdge R6715 Technical Guide (June 2026) (Dell document). SR635 V3: Lenovo ThinkSystem SR635 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

R470 vs SR635 V3Dell vs LenovoR6615 vs SR635 V3Dell vs LenovoR6715 vs DL325 Gen11Dell vs HPER6715 vs DL320 Gen12Dell vs HPEDL320 Gen11 vs SR635 V3HPE vs LenovoDL320 Gen12 vs SR635 V3HPE vs LenovoDL325 Gen11 vs SR635 V3HPE vs LenovoR6715 vs DL325 Gen12Dell vs HPE

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