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

Dell R660 vs Dell R670

A specification-by-specification comparison of the Dell PowerEdge R660 and the Dell PowerEdge R670, built from Dell’s own documents. None of the headline measures favour the R660; 3 favour the R670, and they share no processors.

Bottom line. R670 leads on virtualisation, storage density, network throughput. Neither vendor publishes benchmarks for these machines, so every call here is made on what their documents state.

Dell PowerEdge R660 front view with ten 2.5-inch drive bays, the left control panel, and VGA, USB and power button at the right
Dell PowerEdge
R660
1U Rack2 sockets32 DIMMiDRAC9
Configure the R660 →Full data sheet
VS
Dell PowerEdge R670 front view with 20 EDSFF E3.S drive bays between the left and right control panels
Dell PowerEdge
R670
1U Rack2 sockets32 DIMMiDRAC10
Configure the R670 →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.

R6602
Processor sockets
R6702
R660128
Cores, fully populated
Largest listed processor × its socket count
R670288Higher
R6608 TB
Memory ceiling
As each document states it
R6708 TB
R66016
Drive bays
R67022Higher
R660Up to 3
Accelerators
R670Up to 3
R6601,800 W
Largest power supply
R6701,800 W
R6601U Rack
Rack height
R6701U Rack
R660100 GbE class
Fastest network option
R670400 GbE classHigher
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 R660 if…

  • The same 51 processors and 32 DDR5 slots as the 2U R760 in a 1U chassis, with up to 64 cores per socket and 8 TB of memory.

Choose the R670 if…

  • Cores, fully populated: 288 against 128 on the R660
  • Drive bays: 22 against 16 on the R660
  • Fastest network option: 400 GbE class against 100 GbE class on the R660
  • Up to 144 E-cores per socket — 288 cores in one rack unit — or 86 P-cores where per-core speed matters, all from one list of 23 processors.
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.

VirtualisationR660: 128 cores with 8 TB. R670: 288 cores with 8 TB.R670
Databases & in-memoryMemory ceiling 8 TB against 8 TB, across 32 and 32 DIMM slots.Line ball
Storage density16 bays in 1U against 22 in 1U.R670
AI & acceleration3 accelerators against 3 in the vendor documents.Line ball
Network throughputFastest card listed: 100 GbE class against 400 GbE class.R670
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.

SpecificationR660R670
Processors listed5123
Most cores per processor64144
Processor familiesXeon Max (HBM) · 4th Gen Xeon Scalable · 5th Gen Xeon ScalableXeon 6 E-core · Xeon 6 P-core
Single-processor optionYesNo

Memory

SpecificationR660R670
Memory typesRDIMM DDR5-4800 · RDIMM DDR5-5600 · RDIMM DDR5-6400RDIMM DDR5-6400

Storage

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

SpecificationR660R670
Maximum bays1622
Documented layouts138
Bay sizes2.5-inch · E3.SE3.S · 2.5-inch
Boot devicesBOSS-N1BOSS-N1 DC-MHS (HW RAID 1, 2 x M.2 NVMe SSD 480 GB or 960 GB) · M.2 Interposer board (DC-MHS): 2 x M.2 NVMe SSDs · Internal USB
Storage controllers105

Accelerators & I/O

SpecificationR660R670
OCP slots12
Network cards listed2614

Power & platform

SpecificationR660R670
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 sheet822.88 mm with bezel / 809.04 mm without bezel815.14 mm without bezel (rear I/O) / 829.44 mm without bezel (front I/O)
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.

R660: processors by cores and TDP

Dell PowerEdge R660 processors0816243240485664100 W150 W200 W250 W300 W350 WCores per processorIntel Xeon Max 9480 — 56 cores / 112 threads · 350 W · 1.9 GHz base · 113 MB cache · 4800Intel Xeon Max 9470 — 52 cores / 104 threads · 350 W · 2 GHz base · 105 MB cache · 4800Intel Xeon Max 9460 — 40 cores / 80 threads · 350 W · 2.2 GHz base · 98 MB cache · 4800Intel Xeon Max 9462 — 32 cores / 64 threads · 350 W · 2.7 GHz base · 75 MB cache · 4800Intel Xeon Platinum 8480+ — 56 cores / 112 threads · 350 W · 2 GHz base · 105 MB cache · 4800Intel Xeon Platinum 8470Q — 52 cores / 104 threads · 350 W · 2.1 GHz base · 105 MB cache · 4800Intel Xeon Platinum 8470 — 52 cores / 104 threads · 350 W · 2 GHz base · 105 MB cache · 4800Intel Xeon Platinum 8471N — 52 cores / 104 threads · 300 W · 1.8 GHz base · 98 MB cache · 4800Intel Xeon Platinum 8470N — 52 cores / 104 threads · 300 W · 1.7 GHz base · 98 MB cache · 4800Intel Xeon Platinum 8468 — 48 cores / 96 threads · 350 W · 2.1 GHz base · 105 MB cache · 4800Intel Xeon Platinum 8460Y+ — 40 cores / 80 threads · 300 W · 2 GHz base · 105 MB cache · 4800Intel Xeon Platinum 8452Y — 36 cores / 72 threads · 300 W · 2 GHz base · 68 MB cache · 4800Intel Xeon Gold 6458Q — 32 cores / 64 threads · 350 W · 3.1 GHz base · 60 MB cache · 4800Intel Xeon Platinum 8462Y+ — 32 cores / 64 threads · 300 W · 2.8 GHz base · 60 MB cache · 4800Intel Xeon Gold 6454S — 32 cores / 64 threads · 270 W · 2.2 GHz base · 60 MB cache · 4800Intel Xeon Gold 6430 — 32 cores / 64 threads · 270 W · 2.1 GHz base · 60 MB cache · 4800Intel Xeon Gold 6414U — 32 cores / 64 threads · 250 W · 2 GHz base · 60 MB cache · 4800Intel Xeon Gold 6448Y — 32 cores / 64 threads · 225 W · 2.2 GHz base · 60 MB cache · 4800Intel Xeon Gold 6438Y+ — 32 cores / 64 threads · 205 W · 2 GHz base · 60 MB cache · 4800Intel Xeon Gold 6438N — 32 cores / 64 threads · 205 W · 2 GHz base · 60 MB cache · 4800Intel Xeon Gold 6438M — 32 cores / 64 threads · 205 W · 2.2 GHz base · 60 MB cache · 4800Intel Xeon Gold 6428N — 32 cores / 64 threads · 185 W · 1.8 GHz base · 60 MB cache · 4800Intel Xeon Gold 6421N — 32 cores / 64 threads · 185 W · 1.8 GHz base · 60 MB cache · 4800Intel Xeon Gold 5420+ — 28 cores / 56 threads · 205 W · 2 GHz base · 53 MB cache · 4400Intel Xeon Gold 6442Y — 24 cores / 48 threads · 225 W · 2.6 GHz base · 60 MB cache · 4800Intel Xeon Gold 5418Y — 24 cores / 48 threads · 185 W · 2 GHz base · 45 MB cache · 4400Intel Xeon Gold 5412U — 24 cores / 48 threads · 185 W · 2.1 GHz base · 45 MB cache · 4400Intel Xeon Gold 5418N — 24 cores / 48 threads · 165 W · 1.8 GHz base · 45 MB cache · 4400Intel Xeon Gold 5411N — 24 cores / 48 threads · 165 W · 1.9 GHz base · 45 MB cache · 4400Intel Xeon Silver 4416+ — 20 cores / 40 threads · 165 W · 2 GHz base · 38 MB cache · 4000Intel Xeon Gold 6444Y — 16 cores / 32 threads · 270 W · 3.5 GHz base · 45 MB cache · 4800Intel Xeon Gold 6426Y — 16 cores / 32 threads · 185 W · 2.6 GHz base · 38 MB cache · 4800Intel Xeon Gold 5416S — 16 cores / 32 threads · 150 W · 2 GHz base · 30 MB cache · 4400Intel Xeon Silver 4410Y — 12 cores / 24 threads · 150 W · 2 GHz base · 30 MB cache · 4000Intel Xeon Gold 6434 — 8 cores / 16 threads · 205 W · 3.7 GHz base · 23 MB cache · 4800Intel Xeon Gold 5415+ — 8 cores / 16 threads · 150 W · 2.9 GHz base · 23 MB cache · 4400Intel Xeon Bronze 3408U — 8 cores / 16 threads · 125 W · 1.8 GHz base · 23 MB cache · 4000Intel Xeon Platinum 8592+ — 64 cores / 128 threads · 350 W · 1.9 GHz base · 320 MB cache · 5600Intel Xeon Platinum 8580 — 60 cores / 120 threads · 350 W · 2 GHz base · 300 MB cache · 5600Intel Xeon Platinum 8568Y+ — 48 cores / 96 threads · 350 W · 2.3 GHz base · 300 MB cache · 5600Intel Xeon Platinum 8558U — 48 cores / 96 threads · 300 W · 2 GHz base · 260 MB cache · 4800Intel Xeon Platinum 8562Y+ — 32 cores / 64 threads · 300 W · 2.8 GHz base · 60 MB cache · 5600Intel Xeon Gold 6548N — 32 cores / 64 threads · 250 W · 2.8 GHz base · 60 MB cache · 5200Intel Xeon Gold 6548Y+ — 32 cores / 64 threads · 250 W · 2.5 GHz base · 60 MB cache · 5200Intel Xeon Gold 5512U — 28 cores / 56 threads · 185 W · 2.1 GHz base · 52.5 MB cache · 4800Intel Xeon Gold 6542Y — 24 cores / 48 threads · 250 W · 2.9 GHz base · 60 MB cache · 5200Intel Xeon Gold 6526Y — 16 cores / 32 threads · 195 W · 2.8 GHz base · 37.5 MB cache · 5200Intel Xeon Silver 4514Y — 16 cores / 32 threads · 150 W · 2 GHz base · 30 MB cache · 4400Intel Xeon Silver 4510 — 12 cores / 24 threads · 150 W · 2.4 GHz base · 30 MB cache · 4400Intel Xeon Gold 6534 — 8 cores / 16 threads · 195 W · 3.9 GHz base · 22.5 MB cache · 4800Intel Xeon Silver 4509Y — 8 cores / 16 threads · 125 W · 2.6 GHz base · 23 MB cache · 44008592+64 cores · 5.5 W/core — top SKU and most efficient
Xeon Max (HBM) 44th Gen Xeon Scalable 335th Gen Xeon Scalable 14Bubble size = L3 cache · hover a bubble for the full SKU

R670: processors by cores and TDP

Dell PowerEdge R670 processors081624324048566472808896104112120128136144150 W200 W250 W300 W350 WCores per processorIntel Xeon 6 6780E — 144 cores / 144 threads · 330 W · 2.2 GHz base · 108 MB cache · 6400Intel Xeon 6 6766E — 144 cores / 144 threads · 250 W · 1.9 GHz base · 108 MB cache · 6400Intel Xeon 6 6756E — 128 cores / 128 threads · 225 W · 1.8 GHz base · 96 MB cache · 6400Intel Xeon 6 6746E — 112 cores / 112 threads · 250 W · 2 GHz base · 96 MB cache · 6400Intel Xeon 6 6740E — 96 cores / 96 threads · 250 W · 2.4 GHz base · 96 MB cache · 6400Intel Xeon 6 6710E — 64 cores / 64 threads · 205 W · 2.4 GHz base · 96 MB cache · 6400Intel Xeon 6 6787P — 86 cores / 172 threads · 350 W · 2 GHz base · 336 MB cache · 6400Intel Xeon 6 6767P — 64 cores / 128 threads · 350 W · 2.4 GHz base · 336 MB cache · 6400Intel Xeon 6 6760P — 64 cores / 128 threads · 330 W · 2.2 GHz base · 320 MB cache · 6400Intel Xeon 6 6747P — 48 cores / 96 threads · 330 W · 2.7 GHz base · 288 MB cache · 6400Intel Xeon 6 6740P — 48 cores / 96 threads · 270 W · 2.1 GHz base · 288 MB cache · 6400Intel Xeon 6 6736P — 36 cores / 72 threads · 205 W · 2 GHz base · 144 MB cache · 6400Intel Xeon 6 6737P — 32 cores / 64 threads · 270 W · 2.9 GHz base · 144 MB cache · 6400Intel Xeon 6 6730P — 32 cores / 64 threads · 250 W · 2.5 GHz base · 288 MB cache · 6400Intel Xeon 6 6530P — 32 cores / 64 threads · 225 W · 2.3 GHz base · 144 MB cache · 6400Intel Xeon 6 6527P — 24 cores / 48 threads · 255 W · 3 GHz base · 144 MB cache · 6400Intel Xeon 6 6520P — 24 cores / 48 threads · 210 W · 2.4 GHz base · 144 MB cache · 6400Intel Xeon 6 6724P — 16 cores / 32 threads · 210 W · 3.6 GHz base · 72 MB cache · 6400Intel Xeon 6 6517P — 16 cores / 32 threads · 190 W · 3.2 GHz base · 72 MB cache · 6400Intel Xeon 6 6515P — 16 cores / 32 threads · 150 W · 2.3 GHz base · 72 MB cache · 6400Intel Xeon 6 6505P — 12 cores / 24 threads · 150 W · 2.2 GHz base · 48 MB cache · 6400Intel Xeon 6 6714P — 8 cores / 16 threads · 165 W · 4 GHz base · 48 MB cache · 6400Intel Xeon 6 6507P — 8 cores / 16 threads · 150 W · 3.5 GHz base · 48 MB cache · 64006 6780E144 cores — the top SKU6 6766E1.7 W/core — most efficient
Xeon 6 E-core 6Xeon 6 P-core 17Bubble size = L3 cache · hover a bubble for the full SKU

R660: memory with every slot filled

16 GB512 GB32 GB1 TB64 GB2 TB96 GB3 TB128 GB4 TB256 GB8 TB32 slots · 16 per processor · each tick = one DIMM

R670: memory with every slot filled

16 GB512 GB32 GB1 TB64 GB2 TB96 GB3 TB128 GB4 TB256 GB8 TB32 slots · 16 per processor · each tick = one DIMM

R660: drive bays

Front panel

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

SAS/SATANVMeSAS/SATA + NVMe

R670: drive bays

Front panel

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

SAS/SATANVMeSAS/SATA + NVMe

R660: power supplies

0500100015002000700 W Titanium — Mixed mode HLAC (200-240 V AC / 240 V DC); no 100-120 V low-line support; 60 mm700Titanium800 W N/A (-48 V DC) — -(48-60) V DC input (LVDC); 60 mm800DC800 W Platinum — Mixed mode (100-240 V AC / 240 V DC); 60 mm800Platinum1100 W N/A (-48 V DC) — -(48-60) V DC input (LVDC); 60 mm1100DC1100 W Titanium — Mixed mode (100-240 V AC / 240 V DC); 1050 W at low line 100-120 V; 60 mm10501100Titanium1400 W Platinum — Mixed mode (100-240 V AC / 240 V DC); 1050 W at low line 100-120 V; 60 mm10501400Platinum1400 W Titanium — Mixed mode 277 V AC and HVDC (336 V DC); 60 mm1400Titanium1800 W Titanium — Mixed mode HLAC (200-240 V AC / 240 V DC); no 100-120 V low-line support; 60 mm1800TitaniumWatts · dashed line = output at 100–120 V low line
AC277 VAC / HVDC−48 V DC

R670: power supplies

0500100015002000800 W Platinum — mixed mode 100-240 VAC or 240 VDC; 60 mm M-CRPS800Platinum800 W Titanium — mixed mode 100-240 VAC or 240 VDC800Titanium1100 W Platinum — mixed mode 100-240 VAC or 240 VDC (1050 W lowline)1100Platinum1100 W Titanium — mixed mode 100-240 VAC or 240 VDC (1050 W lowline)1100Titanium1400 W N/A (DC) — -48 to -60 VDC1400DC1500 W Titanium — mixed mode 100-240 VAC or 240 VDC (1050 W lowline)1500Titanium1500 W Titanium — 277 VAC or 336 VDC HVDC; not available at September 2025 launch1500Titanium1800 W Titanium — HLAC 200-240 VAC / 240 HVDC; not available at September 2025 launch1800TitaniumWatts · dashed line = output at 100–120 V low line
AC277 VAC / HVDC
07 — Questions

R660 vs R670, answered

Is the R660 or the R670 the faster server?

Neither document publishes benchmark results, so this page compares what they do state. The R660 lists 51 processors up to 64 cores at 350 W; the R670 lists 23 up to 144 cores at 350 W. Fully populated that is 128 cores against 288.

Which holds more memory?

The R660 has 32 DIMM slots and a stated ceiling of 8 TB. The R670 has 32 and 8 TB.

Which takes more drives?

R660: 16 bays across 13 documented layouts. R670: 22 across 8. Counts include rear and mid-chassis positions where the vendor documents them.

Can either take GPUs?

R660: up to 3 accelerators, 0 double-wide cards listed. R670: 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. R660: Dell PowerEdge R660 Technical Guide (June 2026, Rev. A01) (Dell document). R670: Dell PowerEdge R670 Technical Guide (May 2026, Rev. A07) (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.

Other comparisons in this class

R660 vs R660xsSame familyR660 vs DL360 Gen11Dell vs HPER660 vs DL360 Gen12Dell vs HPER660 vs SR630 V3Dell vs LenovoR660 vs SR630 V4Dell vs LenovoR670 vs DL365 Gen11Dell vs HPER670 vs DL360 Gen11Dell vs HPER670 vs SR630 V4Dell vs LenovoR670 vs SR645 V3Dell vs LenovoR670 vs DL360 Gen12Dell vs HPER670 vs SR630 V3Dell vs Lenovo

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