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

Dell R6615 vs Dell R6715

A specification-by-specification comparison of the Dell PowerEdge R6615 and the Dell PowerEdge R6715, built from Dell’s own documents. None of the headline measures favour the R6615; 5 favour the R6715, and they share no processors.

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

Dell PowerEdge R6615 front with ten 2.5-inch drive bays, the left control panel and VGA plus USB ports on the right ear
Dell PowerEdge
R6615
1U Rack1 socket12 DIMMiDRAC9
Configure the R6615 →Full data sheet
VS
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
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
128
Cores, fully populated
Largest listed processor × its socket count
Higher160
3 TB
Memory ceiling
As each document states it
Higher6 TB
16
Drive bays
Higher22
Up to 2
Accelerators
HigherUp to 3
1,800 W
Largest power supply
1,800 W
1U Rack
Rack height
1U Rack
100 GbE class
Fastest network option
Higher400 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 R6615 if…

  • One socket spans the whole EPYC 9004 range Dell lists here, from 16-core parts to the 128-core 9754, in a single rack unit.

Choose the R6715 if…

  • Cores, fully populated: 160 against 128 on the R6615
  • Memory ceiling: 6 TB against 3 TB on the R6615
  • Drive bays: 22 against 16 on the R6615
  • 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.
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.

VirtualisationR6615: 128 cores with 3 TB. R6715: 160 cores with 6 TB.R6715
Databases & in-memoryMemory ceiling 3 TB against 6 TB, across 12 and 24 DIMM slots.R6715
Storage density16 bays in 1U against 22 in 1U.R6715
AI & acceleration2 accelerators against 3 in the vendor documents.R6715
Network throughputFastest card listed: 100 GbE class against 400 GbE class.R6715
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.

SpecificationR6615R6715
Processors listed2318
Most cores per processor128160
Processor familiesAMD EPYC 9004AMD EPYC 9005

Memory

SpecificationR6615R6715
DIMM slots1224
Slots per processor1224
Fastest rated speed—6,400 MT/s
Memory typesRDIMM DDR5-5600 · RDIMM DDR5-6400RDIMM DDR5-6400 (runs at 5200 MT/s 1DPC / 4400-4000 MT/s 2DPC)

Storage

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

SpecificationR6615R6715
Maximum bays1622
Documented layouts168
Boot devicesBOSS-N1BOSS-N1 DC-MHS · Internal USB
Storage controllers105

Accelerators & I/O

SpecificationR6615R6715
Accelerators supportedUp to 2Up to 3
OCP slots12

Power & platform

SpecificationR6615R6715
Output range700–1,800 W800–1,800 W
Input typesAC · −48 V DC · 277 VAC / HVDCAC · 277 VAC / HVDC
ManagementiDRAC9iDRAC10
Chassis depthVendors measure depth differently — see each data sheet772.13 mm with bezel / 758.29 mm without bezel (features table)815.141 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.

R6615: processors by cores and TDP

Dell PowerEdge R6615 processors081624324048566472808896104112120128200 W250 W300 W350 W400 WCores per processorAMD EPYC 9754 — 128 cores · 400 WAMD EPYC 9734 — 112 cores · 400 WAMD EPYC 9654 — 96 cores · 400 WAMD EPYC 9654P — 96 cores · 400 WAMD EPYC 9684X — 96 cores · 400 WAMD EPYC 9634 — 84 cores · 300 WAMD EPYC 9554 — 64 cores · 400 WAMD EPYC 9554P — 64 cores · 400 WAMD EPYC 9534 — 64 cores · 300 WAMD EPYC 9474F — 48 cores · 400 WAMD EPYC 9454 — 48 cores · 300 WAMD EPYC 9454P — 48 cores · 300 WAMD EPYC 9374F — 32 cores · 400 WAMD EPYC 9384X — 32 cores · 400 WAMD EPYC 9354 — 32 cores · 300 WAMD EPYC 9354P — 32 cores · 300 WAMD EPYC 9334 — 32 cores · 240 WAMD EPYC 9224 — 24 cores · 240 WAMD EPYC 9254 — 24 cores · 240 WAMD EPYC 9274F — 21 cores · 400 WAMD EPYC 9174F — 16 cores · 400 WAMD EPYC 9184X — 16 cores · 400 WAMD EPYC 9124 — 16 cores · 240 WEPYC 9754128 cores · 3.1 W/core — top SKU and most efficient
AMD EPYC 9004 23Bubble size = L3 cache · hover a bubble for the full SKU

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

R6615: 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: 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

R6615: drive bays

Front panel

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

SAS/SATANVMeSAS/SATA + NVMe

R6715: drive bays

Front panel

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

SAS/SATANVMeSAS/SATA + NVMe

R6615: power supplies

0500100015002000700 W Titanium — Mixed mode HLAC (200-240 V AC / 240 V DC); no low-line operation; 60 mm; C13 cord700Titanium800 W Platinum — Mixed mode (100-240 V AC / 240 V DC); 800 W at low line; 60 mm; C13 cord800800Platinum1100 W N/A (-48 V DC) — -(48-60) V DC input (LVDC), 27 A; 60 mm1100DC1100 W Titanium — Mixed mode (100-240 V AC / 240 V DC); 1050 W at low line 100-120 V AC; 60 mm; C13 cord10501100Titanium1400 W Platinum — Mixed mode (100-240 V AC / 240 V DC); 1050 W at low line 100-120 V AC; 60 mm; C13 cord10501400Platinum1400 W Titanium — Mixed mode (100-240 V AC / 240 V DC); 1050 W at low line 100-120 V AC; 60 mm; C13 cord10501400Titanium1400 W Titanium — Mixed mode 277 V AC and HVDC (336 V DC); 60 mm; APP 2006G1 power cable1400Titanium1800 W Titanium — Mixed mode HLAC (200-240 V AC / 240 V DC); no low-line operation; 60 mm; C15 cord (Table 25 header misprints 'Platinum'; Tables 1, 2, 13, 26 say Titanium)1800TitaniumWatts · dashed line = output at 100–120 V low line
AC277 VAC / HVDC−48 V DC

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
07 — Questions

R6615 vs R6715, answered

Is the R6615 or the R6715 the faster server?

Neither document publishes benchmark results, so this page compares what they do state. The R6615 lists 23 processors up to 128 cores at 400 W; the R6715 lists 18 up to 160 cores at 400 W. Fully populated that is 128 cores against 160.

Which holds more memory?

The R6615 has 12 DIMM slots and a stated ceiling of 3 TB. The R6715 has 24 and 6 TB.

Which takes more drives?

R6615: 16 bays across 16 documented layouts. R6715: 22 across 8. Counts include rear and mid-chassis positions where the vendor documents them.

Can either take GPUs?

R6615: up to 2 accelerators, 0 double-wide cards listed. R6715: up to 3, 0 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. R6615: Dell PowerEdge R6615 Technical Guide (July 2026, Rev. A07) (Dell document). R6715: Dell PowerEdge R6715 Technical Guide (June 2026) (Dell document). Each claim on this page is derived from those documents, checked page by page on the two data sheets, and carries no pricing.

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R6615 vs DL325 Gen11Dell vs HPER6615 vs DL320 Gen12Dell vs HPER6615 vs SR635 V3Dell vs LenovoR6715 vs DL325 Gen11Dell vs HPER6715 vs DL320 Gen12Dell vs HPER6715 vs SR635 V3Dell vs LenovoR6615 vs DL320 Gen11Dell vs HPER6715 vs DL325 Gen12Dell vs HPE

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