Head-to-head · every figure from the vendor documents
Dell R660 vs HPE DL360 Gen12
A specification-by-specification comparison of the Dell PowerEdge R660 and the HPE ProLiant Compute DL360 Gen12, built from Dell’s and HPE’s own documents. None of the headline measures favour the R660; 4 favour the DL360 Gen12, and they share no processors.
Bottom line. DL360 Gen12 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.
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
128
Cores, fully populated
Largest listed processor × its socket count
Higher288
8 TB
Memory ceiling
As each document states it
8 TB
16
Drive bays
Higher20
Up to 3
Accelerators
Up to 3
1,800 W
Largest power supply
Higher2,200 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 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 DL360 Gen12 if…
Cores, fully populated: 288 against 128 on the R660
Drive bays: 20 against 16 on the R660
Largest power supply: 2,200 W against 1,800 W on the R660
Twenty E3.S NVMe bays in 1U — five front boxes that each take four E3.S or two U.3 SFF drives, and can be mixed.
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. DL360 Gen12: 288 cores with 8 TB.DL360 Gen12
Databases & in-memoryMemory ceiling 8 TB against 8 TB, across 32 and 32 DIMM slots.Line ball
Storage density16 bays in 1U against 20 in 1U.DL360 Gen12
AI & acceleration3 accelerators against 3 in the vendor documents.Line ball
Network throughputFastest card listed: 100 GbE class against 400 GbE class.DL360 Gen12
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.
Specification
R660
DL360 Gen12
Processors listed
51
33
Most cores per processor
64
144
Processor families
Xeon Max (HBM) · 4th Gen Xeon Scalable · 5th Gen Xeon Scalable
Bay counts are the maximum each document states, including rear and mid-chassis positions.
Specification
R660
DL360 Gen12
Maximum bays
16
20
Documented layouts
13
5
Bay sizes
2.5-inch · E3.S
2.5-inch · E3.S · 3.5-inch
Boot devices
BOSS-N1
HPE 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 + 3 more
Storage controllers
10
14
Accelerators & I/O
Specification
R660
DL360 Gen12
OCP slots
1
2
Network cards listed
26
38
Power & platform
Specification
R660
DL360 Gen12
Power-supply options
8
5
Output range
700–1,800 W
800–2,200 W
Input types
AC · −48 V DC · 277 VAC / HVDC
AC · −48 V DC
Management
iDRAC9
HPE iLO 7
Chassis depthVendors measure depth differently — see each data sheet
822.88 mm with bezel / 809.04 mm without bezel
(8+2) SFF: 75.31 cm (29.65 in)
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
Xeon Max (HBM) 44th Gen Xeon Scalable 335th Gen Xeon Scalable 14Bubble size = L3 cache · hover a bubble for the full SKU
DL360 Gen12: processors by cores and TDP
Xeon 6 E-core 7Xeon 6 P-core 26Bubble size = L3 cache · hover a bubble for the full SKU
R660: memory with every slot filled
DL360 Gen12: memory with every slot filled
R660: drive bays
Front panel
16 × EDSFF NVMe at the front — 16 bays in total.
SAS/SATANVMeSAS/SATA + NVMe
DL360 Gen12: drive bays
Front panel
8 × 2.5" SAS/SATA + NVMe at the front — 8 bays in total.
SAS/SATANVMeSAS/SATA + NVMe
R660: power supplies
AC277 VAC / HVDC−48 V DC
DL360 Gen12: power supplies
AC−48 V DC
07 — Questions
R660 vs DL360 Gen12, answered
Is the R660 or the DL360 Gen12 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 DL360 Gen12 lists 33 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 DL360 Gen12 has 32 and 8.0 TB.
Which takes more drives?
R660: 16 bays across 13 documented layouts. DL360 Gen12: 20 across 5. 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. DL360 Gen12: 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). DL360 Gen12: HPE ProLiant Compute DL360 Gen12 QuickSpecs (Version 18 - 03-Aug-2026) (HPE document). Each claim on this page is derived from those documents, checked page by page on the two data sheets, and carries no pricing.