Head-to-head · every figure from the vendor documents
Dell R7725 vs Lenovo SR650 V3
A specification-by-specification comparison of the Dell PowerEdge R7725 and the Lenovo ThinkSystem SR650 V3, built from Dell’s and Lenovo’s own documents. 2 headline measures favour the R7725, 2 favour the SR650 V3, and they share no processors.
Bottom line. R7725 leads on virtualisation. SR650 V3 leads on databases and in-memory work, AI and acceleration. Neither vendor publishes benchmarks for these machines, so every call here is made on what their documents state.
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.
2
Processor sockets
2
384Higher
Cores, fully populated
Largest listed processor × its socket count
128
6 TB
Memory ceiling
As each document states it
Higher8 TB
40
Drive bays
40
Up to 6
Accelerators
HigherUp to 8
3,200 WHigher
Largest power supply
2,600 W
2U Rack
Rack height
2U Rack
200 GbE class
Fastest network option
200 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 R7725 if…
Cores, fully populated: 384 against 128 on the SR650 V3
Largest power supply: 3,200 W against 2,600 W on the SR650 V3
Up to 192 Zen5 cores per socket, with even the 500 W parts listed for air cooling — the 4th Gen EPYC R7625 in Dell’s comparison table stopped at 128 cores.
Choose the SR650 V3 if…
Memory ceiling: 8 TB against 6 TB on the R7725
Accelerators: Up to 8 against Up to 6 on the R7725
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.
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.
VirtualisationR7725: 384 cores with 6 TB. SR650 V3: 128 cores with 8 TB.R7725
Databases & in-memoryMemory ceiling 6 TB against 8 TB, across 24 and 32 DIMM slots.SR650 V3
Storage density40 bays in 2U against 40 in 2U.Line ball
AI & acceleration6 accelerators against 8 in the vendor documents.SR650 V3
Network throughputFastest card listed: 200 GbE class against 200 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.
Chassis depthVendors measure depth differently — see each data sheet
801.51 mm without bezel / 802.4 mm with bezel
766 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.
R7725: processors by cores and TDP
AMD EPYC 9005 20Bubble size = L3 cache · hover a bubble for the full SKU
SR650 V3: processors by cores and TDP
5th Gen Xeon Scalable 324th Gen Xeon Scalable 52Bubble size = L3 cache · hover a bubble for the full SKU
R7725: memory with every slot filled
SR650 V3: memory with every slot filled
R7725: drive bays
Front panel
40 × EDSFF NVMe at the front — 40 bays in total.
SAS/SATANVMeSAS/SATA + NVMe
SR650 V3: drive bays
Front panel
24 × 2.5" SAS/SATA at the front — 24 bays in total.
SAS/SATANVMeSAS/SATA + NVMe
R7725: power supplies
AC277 VAC / HVDC
SR650 V3: power supplies
AC−48 V DC
07 — Questions
R7725 vs SR650 V3, answered
Is the R7725 or the SR650 V3 the faster server?
Neither document publishes benchmark results, so this page compares what they do state. The R7725 lists 20 processors up to 192 cores at 500 W; the SR650 V3 lists 84 up to 64 cores at 385 W. Fully populated that is 384 cores against 128.
Which holds more memory?
The R7725 has 24 DIMM slots and a stated ceiling of 6 TB. The SR650 V3 has 32 and 8 TB.
Which takes more drives?
R7725: 40 bays across 9 documented layouts. SR650 V3: 40 across 20. Counts include rear and mid-chassis positions where the vendor documents them.
Can either take GPUs?
R7725: up to 6 accelerators, 6 double-wide cards listed. SR650 V3: up to 8, 1 double-wide listed.
Do they share any processors?
No. The two documents list different processors, so a like-for-like processor build is not possible across these two.
Where these figures come from. R7725: Dell PowerEdge R7725 Technical Guide (June 2026) (Dell document). SR650 V3: Lenovo ThinkSystem SR650 V3 Server Product Guide (publication date is not printed in the text export) (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.