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

Dell XE9785 vs HPE DL380a Gen12

A specification-by-specification comparison of the Dell PowerEdge XE9785 and the HPE ProLiant Compute DL380a Gen12, built from Dell’s and HPE’s own documents. 1 headline measure favours the XE9785, 3 favour the DL380a Gen12, and they share no processors.

Bottom line. DL380a Gen12 leads on databases and in-memory work, storage density, AI and acceleration. Neither vendor publishes benchmarks for these machines, so every call here is made on what their documents state.

Dell PowerEdge XE9785 front, MI355X build: GPU sled on top, OCP slot and iDRAC ports, 16 E3.S drives behind the bezel, PCIe slots 2–13 below
Dell PowerEdge
XE9785
10U Rack2 sockets24 DIMMiDRAC10
Configure the XE9785 →Full data sheet
VS
HPE ProLiant Compute DL380a Gen12 4U front with the bezel fitted, NVMe drive cages along the lower edge and the model badge on the right ear
HPE ProLiant
DL380a Gen12
4U Rack2 sockets32 DIMMHPE iLO 7
Configure the DL380a Gen12 →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.

2
Processor sockets
2
384Higher
Cores, fully populated
Largest listed processor × its socket count
288
6 TB
Memory ceiling
As each document states it
Higher8 TB
16
Drive bays
16
Up to 8
Accelerators
HigherUp to 10
3,200 W
Largest power supply
3,200 W
10U Rack
Rack height
Higher4U 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 XE9785 if…

  • Cores, fully populated: 384 against 288 on the DL380a Gen12
  • One chassis, either GPU vendor: eight 288 GB MI355X OAM modules on a Universal Base Board, or an eight-GPU HGX B300 NVL8 board fully linked by NVLink, its NVSwitch under a separate heat sink.

Choose the DL380a Gen12 if…

  • Memory ceiling: 8 TB against 6 TB on the XE9785
  • Accelerators: Up to 10 against Up to 8 on the XE9785
  • Rack height: 4U Rack against 10U Rack on the XE9785
  • Ten double-wide GPU positions in 4U, with the H200 NVL, RTX PRO 6000 Blackwell, RTX PRO 6000D, L40S, L20 and L4 in HPE’s accelerator list.
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.

VirtualisationXE9785: 384 cores with 6 TB. DL380a Gen12: 288 cores with 8 TB.Line ball
Databases & in-memoryMemory ceiling 6 TB against 8 TB, across 24 and 32 DIMM slots.DL380a Gen12
Storage density16 bays in 10U against 16 in 4U.DL380a Gen12
AI & acceleration8 accelerators against 10 in the vendor documents.DL380a Gen12
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.

SpecificationXE9785DL380a Gen12
Processors listed832
Most cores per processor192144
Highest processor TDP500 W350 W
Processor familiesAMD EPYC 9005Xeon 6 E-core · Xeon 6 P-core

Memory

SpecificationXE9785DL380a Gen12
DIMM slots2432
Slots per processor1216
Memory typesRDIMM DDR5-6400 (ECC)RDIMM DDR5-6400

Storage

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

SpecificationXE9785DL380a Gen12
Bay sizesE3.S · 2.5-inch2.5-inch · E3.S
Boot devicesEmbedded BOSS (2 x M.2 NVMe SSD, HWRAID 1, dedicated heat sinks and thermal pads)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 · HPE NS204i-u v2 480GB NVMe Hot Plug Boot Optimized Storage Device + 1 more
Storage controllers27

Accelerators & I/O

SpecificationXE9785DL380a Gen12
Accelerators supportedUp to 8Up to 10
OCP slots12
PCIe network slots126
Network cards listed1536

Power & platform

SpecificationXE9785DL380a Gen12
Power-supply options13
Output range3,200–3,200 W2,400–3,200 W
Input typesACAC · 277 VAC / HVDC
ManagementiDRAC10HPE iLO 7
Chassis depthVendors measure depth differently — see each data sheet439.5 mm (17.30 in) H x 448 mm (17.63 in) W (482.3 mm with ears) x 1044.7 mm (41.12 in) D with bezel / 1023 mm (40.27 in) without bezel80.26 cm (31.60 in) deep
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.

XE9785: processors by cores and TDP

Dell PowerEdge XE9785 processors081624324048566472808896104112120128136144152160168176184192300 W350 W400 W450 W500 WCores per processorAMD EPYC 9965 — 192 cores / 384 threads · 500 W · 2.25 GHz base · 384 MB cache · DDR5-6400AMD 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 9755 — 128 cores / 256 threads · 500 W · 2.7 GHz base · 512 MB cache · DDR5-6400AMD EPYC 9655 — 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 9475F — 48 cores / 96 threads · 360 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 · DDR5-6400EPYC 9965192 cores — the top SKUEPYC 98452.4 W/core — most efficient
AMD EPYC 9005 8Bubble size = L3 cache · hover a bubble for the full SKU

DL380a Gen12: processors by cores and TDP

HPE ProLiant Compute DL380a Gen12 processors081624324048566472808896104112120128136144150 W200 W250 W300 W350 WCores per processorIntel Xeon 6780E — 144 cores · 330 W · 2.2 GHz base · 108 MB cache · DDR5-6400Intel Xeon 6766E — 144 cores · 250 W · 1.9 GHz base · 108 MB cache · DDR5-6400Intel Xeon 6756E — 128 cores · 225 W · 1.8 GHz base · 96 MB cache · DDR5-6400Intel Xeon 6746E — 112 cores · 250 W · 2 GHz base · 96 MB cache · DDR5-5600Intel Xeon 6740E — 96 cores · 250 W · 2.4 GHz base · 96 MB cache · DDR5-6400Intel Xeon 6710E — 64 cores · 205 W · 2.4 GHz base · 96 MB cache · DDR5-5600Intel Xeon 6787P — 86 cores · 350 W · 2 GHz base · 336 MB cache · DDR5-6400Intel Xeon 6788P — 86 cores · 350 W · 2 GHz base · 336 MB cache · DDR5-6400Intel Xeon 6767P — 64 cores · 350 W · 2.4 GHz base · 336 MB cache · DDR5-6400Intel Xeon 6776P — 64 cores · 350 W · 2.3 GHz base · 336 MB cache · DDR5-6400Intel Xeon 6760P — 64 cores · 330 W · 2.2 GHz base · 320 MB cache · DDR5-6400Intel Xeon 6768P — 64 cores · 330 W · 2.4 GHz base · 336 MB cache · DDR5-6400Intel Xeon 6747P — 48 cores · 330 W · 2.7 GHz base · 288 MB cache · DDR5-6400Intel Xeon 6748P — 48 cores · 300 W · 2.5 GHz base · 192 MB cache · DDR5-6400Intel Xeon 6740P — 48 cores · 270 W · 2.1 GHz base · 288 MB cache · DDR5-6400Intel Xeon 6736P — 36 cores · 205 W · 2 GHz base · 144 MB cache · DDR5-6400Intel Xeon 6732P — 32 cores · 350 W · 3.8 GHz base · 144 MB cache · DDR5-6400Intel Xeon 6745P — 32 cores · 300 W · 3.1 GHz base · 336 MB cache · DDR5-6400Intel Xeon 6737P — 32 cores · 270 W · 2.9 GHz base · 144 MB cache · DDR5-6400Intel Xeon 6738P — 32 cores · 270 W · 2.9 GHz base · 144 MB cache · DDR5-6400Intel Xeon 6730P — 32 cores · 250 W · 2.5 GHz base · 288 MB cache · DDR5-6400Intel Xeon 6530P — 32 cores · 225 W · 2.3 GHz base · 144 MB cache · DDR5-6400Intel Xeon 6527P — 24 cores · 255 W · 3 GHz base · 144 MB cache · DDR5-6400Intel Xeon 6520P — 24 cores · 210 W · 2.4 GHz base · 144 MB cache · DDR5-6400Intel Xeon 6728P — 24 cores · 210 W · 2.7 GHz base · 144 MB cache · DDR5-6400Intel Xeon 6725P — 16 cores · 235 W · 3.7 GHz base · 192 MB cache · DDR5-6400Intel Xeon 6724P — 16 cores · 210 W · 3.6 GHz base · 72 MB cache · DDR5-6400Intel Xeon 6517P — 16 cores · 190 W · 3.2 GHz base · 72 MB cache · DDR5-6400Intel Xeon 6515P — 16 cores · 150 W · 2.3 GHz base · 72 MB cache · DDR5-6400Intel Xeon 6505P — 12 cores · 150 W · 2.2 GHz base · 48 MB cache · DDR5-6400Intel Xeon 6714P — 8 cores · 165 W · 4 GHz base · 48 MB cache · DDR5-6400Intel Xeon 6507P — 8 cores · 150 W · 3.5 GHz base · 48 MB cache · DDR5-64006780E144 cores — the top SKU6766E1.7 W/core — most efficient
Xeon 6 E-core 6Xeon 6 P-core 26Bubble size = L3 cache · hover a bubble for the full SKU

XE9785: memory with every slot filled

96 GB2.3 TB128 GB3 TB256 GB6 TB24 slots · 12 per processor · each tick = one DIMM

DL380a Gen12: 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

XE9785: drive bays

Front panel

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

SAS/SATANVMeSAS/SATA + NVMe

DL380a Gen12: drive bays

Front panel

4 × 2.5" NVMe at the front — 4 bays in total.

SAS/SATANVMeSAS/SATA + NVMe

XE9785: power supplies

05001000150020002500300035003200 W Titanium — 3200 W AC Titanium, 73.5 mm form factor on a 17G 54 V design, C19 power cable; 216.1-240 VAC 50/60 Hz 16 A = 3200 W; 240 VDC 14.5 A = 3200 W (mixed mode); 200-216 VAC = 2900 W (multi-rated); peak power 5280 W highline; heat dissipation 11,850 BTU/hr; efficiency 90/94/96/91 % at 10/20/50/100 % load; low-line (100-120 V) not supported; do not mix PSU vendors; system does not support user power cap3200TitaniumWatts · dashed line = output at 100–120 V low line
AC

DL380a Gen12: power supplies

05001000150020002500300035002400 W Titanium — HPE M-CRPS family (Modular Common Redundant Power Supply); P67252-B21 named in the EU ErP Lot 9 section as 96% efficient; C19/C19-C20 power cords only; 2400W or 3200W required for H100 NVL / H200 NVL / RTX Pro 6000 GPUs2400Titanium2800 W Titanium — HPE M-CRPS family; 277VAC input unit (added in Version 16, 04-May-2026); no efficiency percentage or BTU figure printed for this unit2800Titanium3200 W Titanium — HPE M-CRPS family; P67248-B21 named in the EU ErP Lot 9 section as 96% efficient; C19/C19-C20 power cords only; 2400W or 3200W required for H100 NVL / H200 NVL / RTX Pro 6000 GPUs3200TitaniumWatts · dashed line = output at 100–120 V low line
AC277 VAC / HVDC
07 — Questions

XE9785 vs DL380a Gen12, answered

Is the XE9785 or the DL380a Gen12 the faster server?

Neither document publishes benchmark results, so this page compares what they do state. The XE9785 lists 8 processors up to 192 cores at 500 W; the DL380a Gen12 lists 32 up to 144 cores at 350 W. Fully populated that is 384 cores against 288.

Which holds more memory?

The XE9785 has 24 DIMM slots and a stated ceiling of 6 TB. The DL380a Gen12 has 32 and 8.0 TB.

Which takes more drives?

XE9785: 16 bays across 2 documented layouts. DL380a Gen12: 16 across 2. Counts include rear and mid-chassis positions where the vendor documents them.

Can either take GPUs?

XE9785: up to 8 accelerators, 0 double-wide cards listed. DL380a Gen12: up to 10, 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. XE9785: Dell PowerEdge XE9785 Technical Guide (Rev. A03, May 2026) (Dell document). DL380a Gen12: HPE ProLiant Compute DL380a Gen12 QuickSpecs (Version 20 - 08-Sep-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.

Other comparisons in this class

XE7745 vs DL380a Gen12Dell vs HPEXE9685L vs DL380a Gen12Dell vs HPEXE9785 vs XD685Dell vs HPEXE9785 vs SR675 V3Dell vs LenovoXE9785 vs SR685a V3Dell vs LenovoXE7740 vs DL380a Gen12Dell vs HPEDL380a Gen12 vs SR675 V3HPE vs LenovoDL380a Gen12 vs SR685a V3HPE vs Lenovo

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