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Technical data sheet · ProLiant Compute Gen12 · 2U, one socket

HPE ProLiant Compute DL340 Gen12Specifications, configurations & comparisons

The HPE ProLiant Compute DL340 Gen12 is a one-socket Intel Xeon 6 server in 2U that HPE builds on three configure-to-order chassis: SFF/EDSFF, 12-bay LFF and a longer Front GPU model. The chassis fixes the drive count, the accelerator options, the OCP layout and the rack depth, so this sheet works through each one; a FAQ covers how it differs from the DL340e.

2U Rack1 socketXeon 6 E-coreXeon 6 P-coreHPE iLO 7
144cores per CPUsingle socket · Xeon 6 E-core
4TBDDR5 maximum16 DIMM slots
36drive bays8 drive-cage kits
4GPUs2 accelerators listed
3,200Wlargest PSU7 supply options
33processor SKUs2 families
Configure a DL340 Gen12 →Get a UK quoteRefurbished alternatives ↓

Every figure checked against the HPE ProLiant Compute DL340 Gen12 QuickSpecs (Version 15 - 08-September-2026)

HPE ProLiant Compute DL340 Gen12 Front GPU chassis: twelve E3.S drives in the centre box between two vented GPU cages, badge on the right ear

Image: Hewlett Packard Enterprise

Form factor
2U Rack · 1 socket
Processors
Xeon 6 E-core · Xeon 6 P-core
Memory
16 × DDR5 RDIMM · up to 4TB
Drive bays
Up to 36 · 7 drive-cage kits
Expansion
2 × PCIe · 4 × OCP 3.0
GPUs
Up to 4 · 2 listed
Boot
NS204i · 5 boot options
Management
HPE iLO 7
01 — Overview

The DL340 Gen12 at a glance

Our read of HPE’s documentation: where the DL340 Gen12 is strong, and the limits worth knowing before you spec one.

Strengths

  • Three factory chassis on one single-socket platform: SFF for up to 24 × 2.5-inch or 36 × E3.S drives, LFF for 12 × 3.5-inch, and a Front GPU model that HPE documents with four double-wide accelerators.
  • Up to 4 TB of DDR5 across sixteen RDIMM slots using 256 GB 3DS modules, and eight DIMMs — one in each channel — keep HPE’s 6400 MT/s rating.
  • Up to four OCP 3.0 positions, each PCIe 5.0 x16: OCP A built in at the rear, OCP B optional beside it, and a pair of optional front slots on the SFF and GPU chassis.
  • The SFF, 24SFF and EDSFF chassis measure 63.95 cm deep and the 12LFF 65.61 cm; only the GPU chassis stretches to 83.71 cm.
  • A direct liquid cooling kit (P84592-B21) is on the option list, shipped only inside a complete 42U or 48U Enterprise G2 rack.

Watch-outs

  • The slot table lists just two CEM positions — Slot 3 on the primary riser and Slot 6 on the secondary, both optional PCIe 5.0 x16 FHHL — so most networking goes through OCP.
  • No network port is standard; every order needs an OCP 3.0 or stand-up adapter.
  • The GPU kits pull in opposite directions: the four-GPU front kit requires a Single Socket (6XX1P) processor, while the two-GPU kit is not supported with one.
  • The 6774P is sold for AI-server host duty only; HPE warns that general-compute use voids the warranty.
  • The high-performance fan kit becomes mandatory with nine or more DIMMs, any 256 GB DIMM, the GPU chassis or a NEBS build.
Processors33 SKUs
Cores / CPU8–144
DIMM slots16
Drive-cage kits7
Max bays36
GPUsup to 4
PSU options7 · to 3,200 W
02 — Processors

33 supported processors, mapped

Thirty-three Xeon 6 option kits are listed, from the 8-core, 135 W 6503P that Version 15 of the QuickSpecs added, up to two 144-core E-core parts, the 6766E and 6780E. A single socket leaves nothing to add later, so the processor you pick decides the core count, the ceiling on memory speed and, together with the chassis, the heat sink.

Processor landscape — cores × TDP

33 SKUs · 2 families
HPE ProLiant Compute DL340 Gen12: every supported processor by cores and TDP081624324048566472808896104112120128136144100 W150 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 6731E — 96 cores · 250 W · 2.2 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 6781P — 80 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 6774P — 64 cores · 350 W · 2.5 GHz base · 336 MB cache · DDR5-6400Intel Xeon 6761P — 64 cores · 350 W · 2.5 GHz base · 336 MB cache · DDR5-6400Intel Xeon 6760P — 64 cores · 330 W · 2.2 GHz base · 320 MB cache · DDR5-6400Intel Xeon 6747P — 48 cores · 330 W · 2.7 GHz base · 288 MB cache · DDR5-6400Intel Xeon 6741P — 48 cores · 300 W · 2.5 GHz base · 288 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 baseIntel 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 6730P — 32 cores · 250 W · 2.5 GHz base · 288 MB cache · DDR5-6400Intel Xeon 6731P — 32 cores · 245 W · 2.5 GHz base · 144 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 6521P — 24 cores · 225 W · 2.6 GHz base · 144 MB cache · DDR5-6400Intel Xeon 6520P — 24 cores · 210 W · 2.4 GHz base · 144 MB cache · DDR5-6400Intel Xeon 6725P — 16 cores · 235 W · 3.7 GHz base · 192 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 6511P — 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 6507P — 8 cores · 150 W · 3.5 GHz base · 48 MB cache · DDR5-6400Intel Xeon 6503P — 8 cores · 135 W · 2.8 GHz base · 48 MB cache · DDR5-64006780E144 cores — the top SKU6766E1.7 W/core — most efficient
Xeon 6 E-core 7Xeon 6 P-core 26Bubble size = L3 cache · hover a bubble for the full SKU

Processor explorer

filter · sort · compare
ProcessorCores / threadsBaseL3 cacheTDPW / coreMemory
Intel Xeon 6780E1442.2 GHz108 MB330 W2.3DDR5-6400
Intel Xeon 6766E1441.9 GHz108 MB250 W1.7DDR5-6400
Intel Xeon 6756E1281.8 GHz96 MB225 W1.8DDR5-6400
Intel Xeon 6746E1122 GHz96 MB250 W2.2DDR5-5600
Intel Xeon 6731E962.2 GHz96 MB250 W2.6DDR5-5600
Intel Xeon 6740E962.4 GHz96 MB250 W2.6DDR5-6400
Intel Xeon 6787P862 GHz336 MB350 W4.1DDR5-6400
Intel Xeon 6781P802 GHz336 MB350 W4.4DDR5-6400
Intel Xeon 6710E642.4 GHz96 MB205 W3.2DDR5-5600
Intel Xeon 6767P642.4 GHz336 MB350 W5.5DDR5-6400
Intel Xeon 6774P642.5 GHz336 MB350 W5.5DDR5-6400
Intel Xeon 6761P642.5 GHz336 MB350 W5.5DDR5-6400
Intel Xeon 6760P642.2 GHz320 MB330 W5.2DDR5-6400
Intel Xeon 6747P482.7 GHz288 MB330 W6.9DDR5-6400
Intel Xeon 6741P482.5 GHz288 MB300 W6.3DDR5-6400
Intel Xeon 6740P482.1 GHz288 MB270 W5.6DDR5-6400
Intel Xeon 6736P362 GHz144 MB205 W5.7DDR5-6400
Intel Xeon 6732P323.8 GHz—350 W10.9—
Intel Xeon 6745P323.1 GHz336 MB300 W9.4DDR5-6400
Intel Xeon 6737P322.9 GHz144 MB270 W8.4DDR5-6400
Intel Xeon 6730P322.5 GHz288 MB250 W7.8DDR5-6400
Intel Xeon 6731P322.5 GHz144 MB245 W7.7DDR5-6400
Intel Xeon 6530P322.3 GHz144 MB225 W7.0DDR5-6400
Intel Xeon 6527P243 GHz144 MB255 W10.6DDR5-6400
Intel Xeon 6521P242.6 GHz144 MB225 W9.4DDR5-6400
Intel Xeon 6520P242.4 GHz144 MB210 W8.8DDR5-6400
Intel Xeon 6725P163.7 GHz192 MB235 W14.7DDR5-6400
Intel Xeon 6517P163.2 GHz72 MB190 W11.9DDR5-6400
Intel Xeon 6515P162.3 GHz72 MB150 W9.4DDR5-6400
Intel Xeon 6511P162.3 GHz72 MB150 W9.4DDR5-6400
Intel Xeon 6505P122.2 GHz48 MB150 W12.5DDR5-6400
Intel Xeon 6507P83.5 GHz48 MB150 W18.8DDR5-6400
Intel Xeon 6503P82.8 GHz48 MB135 W16.9DDR5-6400
  • Six Single Socket (RICH I/O) processors — 6511P, 6521P, 6731P, 6741P, 6761P and 6781P — print zero UPI links. HPE ties 136 PCIe lanes to this group, and both the four-GPU kit and the rear captive riser require one.
  • Heat sinks follow chassis and TDP: the SFF chassis may use the standard heat sink to 250 W while it carries no more than two 8SFF kits or four 4EDSFF kits, and needs the high-performance heat sink above that; LFF, GPU and NEBS builds use the high-performance heat sink throughout, to 350 W.
  • The 6710E, 6731E and 6746E are printed at 5600 MT/s rather than 6400, and HCC and LCC die parts carry a delayed-availability warning.
  • The tables disagree three times: the 6515P’s base clock is 2.4 GHz in the feature table and 2.3 GHz on its option-kit line; the Mainline row for a 2.3 GHz, 225 W, 32-core part says “6730P” where kit P74571-B21 is the 6530P; and the 6732P is orderable yet has no Standard Features row.
03 — Memory

16 DDR5 DIMM slots

Sixteen RDIMM slots hang off the one processor — eight channels with two slots each. With one DIMM per channel HPE rates the memory at 6400 MT/s; filling both slots of every channel brings the rating to 5200 MT/s. The 4 TB maximum is sixteen 256 GB 3DS modules, so it is always a two-per-channel build.

Capacity with every slot filled

by DIMM size
16 GB256 GB32 GB512 GB64 GB1 TB96 GB1.5 TB128 GB2 TB256 GB4 TBneeds performance fans16 slots · 16 per processor · each tick = one DIMM

Operating speed

per HPE memory tables
Processor1 DIMM / channel2 DIMMs / channel
Intel Xeon 6 (HPE platform rating)6400 MT/s5200 MT/s
  • Two triggers make the high-performance fan kit compulsory: a 256 GB module anywhere, or nine DIMMs or more.
  • Any processor on the list can address the full 4 TB, according to HPE, though the processor still caps memory speed.
  • Memory protection covers Advanced ECC, full mirroring and ADDDC, which HPE switches on by default and warns can slow certain workloads.
  • The -B21 memory numbers are for stand-alone orders; factory-fitted DIMMs use the matching -F21 part.
04 — Storage

7 drive-cage kits, up to 36 bays

Drive capacity depends entirely on the chassis ordered. The SFF model ships with an 8SFF cage in Box 3 and grows to 24 × 2.5-inch, or to 36 E3.S with the EDSFF front cage; the LFF model starts from a 4LFF backplane and reaches 12 × 3.5-inch; the Front GPU model keeps Box 2 for 8 SFF or 12 E3.S drives. The NS204i-u boot device sits outside the data bays.

Headline layouts

front panel view

Front panel

SFF CTO server with three 8SFF cages. HPE’s capacity table fills it with 24 × 15.36 TB SAS SSDs for 368.6 TB, or with 24 × 2.4 TB SAS disks for 57.6 TB.

SAS/SATANVMeSAS/SATA + NVMe

Controllers & boot

  • HPE MR216i-o Gen11 x16 Lanes without Cache OCP SPDM Storage Controller — RAID. OCP form factor (OROC); supports up to 16 SAS/SATA/NVMe drives
  • HPE MR216i-p Gen11 x16 Lanes without Cache PCI SPDM Plug-in Storage Controller — RAID. PCIe plug-in; supports up to 16 SAS/SATA/NVMe drives
  • HPE MR408i-o Gen11 x8 Lanes 4GB Cache OCP SPDM Storage Controller — RAID, 4GB cache. OCP form factor; supports up to 8 SAS/SATA/NVMe drives; requires HPE 96W Smart Storage Li-ion Battery 145mm Kit (P01366-B21) or Smart Storage Hybrid Capacitor with 145mm Cable Kit (P02377-B21)
  • HPE MR416i-o Gen11 x16 Lanes 8GB Cache OCP SPDM Storage Controller — RAID, 8GB cache. OCP form factor; supports up to 16 SAS/SATA/NVMe drives; requires battery P01366-B21 or hybrid capacitor P02377-B21
  • HPE MR416i-p Gen11 x16 Lanes 8GB Cache PCI SPDM Plug-in Storage Controller — RAID, 8GB cache. PCIe plug-in; supports up to 16 SAS/SATA/NVMe drives; requires battery P01366-B21 or hybrid capacitor P02377-B21
  • HPE MR932i-p x32 Lanes PCIe Gen5 SPDM Plug-in Storage Controller — RAID. PCIe plug-in; supports up to 32 SAS/NVMe drives; comes with an onboard battery. Per the Drive/Interface Support Matrix the MR900 series supports SAS SSD and NVMe only - no HDD and no SATA SSD.
  • HPE Smart Array E208e-p SR Gen10 (8 External Lanes/No Cache) 12G SAS PCIe Plug-in Controller — HBA. PCIe; external SAS controller
  • Intel Virtual RAID on CPU (VROC) Premium FIO Software for HPE — Software RAID. RAID 0/1/5/10; up to 32 NVMe drives depending on processor; SATA drives not supported
  • HPE NS204i-u v2 480GB NVMe Hot Plug Boot Optimized Storage Device (P78279-B21) — boot
  • HPE NS204i-u v2 960GB NVMe Hot Plug Boot Optimized Storage Device (P81160-B21) — boot
  • HPE NS204i-u v2 960GB NVMe SED Hot Plug Boot Optimized Storage Device (P81162-B21) — boot
  • HPE ProLiant Compute DL3XX Gen12 NS204i-u Boot Extension Enablement Kit (P71433-B21) - required with NS204i-u v2 — boot
All 12 controllers and 5 boot options
  • Intel Virtual RAID on CPU (VROC) Premium E-RTU for HPE — Software RAID. RAID 0/1/5/10; field-deployment (E-RTU) equivalent of R7J57A
  • Intel Virtual RAID on CPU (VROC) RAID 1 FIO Software for HPE — Software RAID. RAID 1; up to 32 NVMe drives depending on processor; SATA drives not supported
  • Intel Virtual RAID on CPU (VROC) RAID 1 E-RTU for HPE — Software RAID. RAID 1; field-deployment (E-RTU) equivalent of S3Q19A
  • HPE NS204i-u v2 NVMe Hot Plug Boot Optimized Storage Device — Boot. 480GB (P78279-B21), 960GB (P81160-B21) or 960GB SED (P81162-B21); includes 2 NVMe SSDs; RAID 1 preconfigured and no additional RAID can be applied
  • HPE ProLiant Compute Gen12 NS204i-u Front Enablement Kit (P74759-B21) - front mounting on SFF and GPU CTO Servers — boot
  • 8SFF cage kits come as U.3 tri-mode x1 or x4, or as an x4 kit named U.2 whose note describes it as holding NVMe U.3 drives; two-bay front cage kits add a pair of U.3 NVMe drives on the SFF and LFF chassis.
  • MR200 and MR400-series controllers accept SAS, SATA and NVMe drives; the x32 MR932i-p is limited to SAS SSDs and NVMe, with no hard disks and no SATA SSDs.
  • Intel VROC (RAID 1, or Premium for RAID 0/1/5/10) handles NVMe only — up to 32 drives depending on the processor — and does not support SATA.
  • NS204i-u v2 boot devices carry two NVMe SSDs preset to RAID 1 (480 GB, 960 GB or 960 GB SED); the SFF and GPU chassis can mount one at the front with the front enablement and multipurpose cage kits.
  • An optical drive is available on the SFF/EDSFF and LFF chassis, not on the GPU chassis.

Every documented drive-cage kit

7 with drive bays
HPE ProLiant Compute DL340 Gen12 8SFF x4 U.2 NVMe …HPE ProLiant Compute DL340 Gen12 8SFF x4 U.2 NVMe Drive Cage Kit8HPE ProLiant Compute DL3XX Gen12 8SFF x1 U.3 Tri-M…HPE ProLiant Compute DL3XX Gen12 8SFF x1 U.3 Tri-Mode Drive Cage Kit8HPE ProLiant Compute DL3XX Gen12 8SFF x4 U.3 Tri-M…HPE ProLiant Compute DL3XX Gen12 8SFF x4 U.3 Tri-Mode Drive Cage Kit8HPE ProLiant Compute DL3XX Gen12 Front SFF for 2SF…HPE ProLiant Compute DL3XX Gen12 Front SFF for 2SFF Enablement U.3 HDD Front Cage Kit2HPE ProLiant Compute Gen12 4LFF Backplane KitHPE ProLiant Compute Gen12 4LFF Backplane Kit4HPE ProLiant Compute DL3XX Gen12 Front LFF for 2SF…HPE ProLiant Compute DL3XX Gen12 Front LFF for 2SFF Enablement Side-by-Side U.3 HDD Front Cage Kit2HPE ProLiant Compute Gen12 4EDSFF Drive Cage KitHPE ProLiant Compute Gen12 4EDSFF Drive Cage Kit4Bays · solid = front · dashed = rear · brighter = NVMe-only
2.5-inch3.5-inchEDSFF (E1.S / E3.S)
05 — Accelerators & I/O

GPUs, PCIe and networking

Only two cards appear in the accelerator list: the NVIDIA L4 24GB, which needs performance fans, and the NVIDIA L40S 48GB, which is restricted to the GPU CTO server and needs performance fans plus its own L40S power cable kit. HPE’s heaviest GPU-chassis weight configuration has four double-wide accelerators, the case the four-GPU enablement kit and a 6XX1P processor cover. No card power or slot width is printed. Front GPU chassis: up to 4 double-wide (4x kit, 6XX1P CPU) · L4 or L40S.

NVIDIA L4 24GB PCIe Accelerator for HPE

24GB

NVIDIA L40S 48GB PCIe Accelerator

48GB

I/O topology

1 socket
CPUPCIe 5.08 ch · 16 DIMMSlot 3 · PCIe 5.0 x16primary CEM riser · FHHLSlot 6 · PCIe 5.0 x16secondary CEM riser · FHHLOCP A + optional OCP Brear · PCIe 5.0 x16 each2 × front OCP 3.0optional · one with NCSI

Rear expansion is thin — two optional CEM slots — and OCP 3.0 carries most of the I/O: OCP A at the rear as standard, with OCP B and two front positions as options. With a RICH I/O processor HPE quotes 136 PCIe lanes.

Network adapters HPE lists

30 options
AdapterPortsForm
Broadcom BCM5719 Ethernet 1Gb 4-port BASE-T Adapter for HPE4 × 1GbEPCIe
Broadcom BCM57412 Ethernet 10Gb 2-port SFP+ Adapter for HPE2 × 10GbEPCIe
Broadcom BCM57416 Ethernet 10Gb 2-port BASE-T Adapter for HPE2 × 10GbEPCIe
Intel E810-XXVDA2 Ethernet 10/25Gb 2-port SFP28 Adapter for HPE2 × 10/25GbEPCIe
Intel E810-XXVDA4 Ethernet 10/25Gb 4-port SFP28 Adapter for HPE4 × 10/25GbEPCIe
Broadcom BCM57414 Ethernet 10/25Gb 2-port SFP28 Adapter for HPE2 × 10/25GbEPCIe
Broadcom BCM57504 Ethernet 10/25Gb 4-port SFP28 Adapter for HPE4 × 10/25GbEPCIe
NVIDIA Ethernet 10/25Gb 2-port SFP28 NVMe-oF Crypto Adapter for HPE2 × 10/25GbEPCIe
AMD Solarflare X4522-PLUS 10/25GbE 2-port SFP56 Adapter for HPE2 × 10/25GbEPCIe
Intel E810-CQDA2 Ethernet 100Gb 2-port QSFP28 Adapter for HPE2 × 100GbEPCIe
Mellanox MCX623106AS-CDAT Ethernet 100Gb 2-port QSFP56 Adapter for HPE2 × 100GbEPCIe
HPE Slingshot SA210S Ethernet 200Gb 1-port PCIe NIC1 × 200GbEPCIe
HPE InfiniBand NDR/Ethernet 400Gb 1-port OSFP PCIe5 x16 MCX75310AAS-NEAT Generic Adapter1 × InfiniBand NDR / 400GbEPCIe
HPE InfiniBand NDR200/Ethernet 200Gb 1-port OSFP PCIe5 x16 MCX75310AAS-HEAT Generic Adapter1 × InfiniBand NDR200 / 200GbEPCIe
Broadcom BCM5719 Ethernet 1Gb 4-port BASE-T OCP3 Adapter for HPE4 × 1GbEOCP 3.0
Broadcom BCM57412 Ethernet 10Gb 2-port SFP+ OCP3 Adapter for HPE2 × 10GbEOCP 3.0
Broadcom BCM57416 Ethernet 10Gb 2-port BASE-T OCP3 Adapter for HPE2 × 10GbEOCP 3.0
Intel E810-XXVDA2 Ethernet 10/25Gb 2-port SFP28 OCP3 Adapter for HPE2 × 10/25GbEOCP 3.0
Intel E810-XXVDA4 Ethernet 10/25Gb 4-port SFP28 OCP3 Adapter for HPE4 × 10/25GbEOCP 3.0
Broadcom BCM57414 Ethernet 10/25Gb 2-port SFP28 OCP3 Adapter for HPE2 × 10/25GbEOCP 3.0
Broadcom BCM57504 Ethernet 10/25Gb 4-port SFP28 OCP3 Adapter for HPE4 × 10/25GbEOCP 3.0
Intel E810-CQDA2 Ethernet 100Gb 2-port QSFP28 OCP3 Adapter for HPE2 × 100GbEOCP 3.0
Broadcom BCM57608 Ethernet 100Gb 2-port QSFP112 OCP3 Adapter for HPE2 × 100GbEOCP 3.0
NVIDIA Ethernet 100Gb 2-port NVMe-oF Offload Adapter for HPE2 × 100GbEOCP 3.0
HPE SN1610Q 32Gb 1-port Fibre Channel Host Bus Adapter1 × 32Gb Fibre ChannelPCIe
HPE SN1610Q 32Gb 2-port Fibre Channel Host Bus Adapter2 × 32Gb Fibre ChannelPCIe
HPE SN1700Q 64Gb 1-port Fibre Channel Host Bus Adapter1 × 64Gb Fibre ChannelPCIe
HPE SN1700Q 64Gb 2-port Fibre Channel Host Bus Adapter2 × 64Gb Fibre ChannelPCIe
HPE SN1620E 32Gb 2-port Fibre Channel SecureHBA2 × 32Gb Fibre ChannelPCIe
HPE SN1720E 64Gb 2-port Fibre Channel SecureHBA2 × 64Gb Fibre ChannelPCIe
  • In the SFF chassis Slot 3 works only alongside one of four things: the 8SFF x4 direct-attach cabling, the 8SFF/EDSFF cable kit, the 36EDSFF x2 R1S direct-attach cable kit or an internal controller.
  • Other rear risers are alternatives: up to two captive riser kits (SFF and LFF chassis with a 6XX1P processor, not with an OCP B cable kit on SFF), or up to two NEBS-compliant risers that cannot be mixed with other risers and need the high-performance heat sink and six performance fans.
  • HPE’s base-model table marks the OCP 3.0 slot “Not supported” on the LFF CTO server, yet the same document describes OCP A as embedded and lists OCP slot B cable kits for the LFF chassis — confirm OCP networking before ordering an LFF build.
  • Management is an iLO 7 ASIC on the DC-SCM module (P76981-B21), with a dedicated 1 GbE port at the rear and a USB-C iLO service port at the front.
  • HPE attaches a high-performance fan kit requirement to its 100 Gb adapter groups, which also hold the 200 Gb Slingshot NIC and the 400 Gb InfiniBand card.
06 — Power & cooling

7 power supplies, 800–3,200 W

Every supply is an M-CRPS hot-plug unit, and one server takes a single type. AC options are an 800 W Platinum model and Titanium models of 1000, 1500, 2400 and 3200 W; −48 V DC rooms get 1300 W and 2200 W units.

0500100015002000250030003500800 W Platinum — HPE M-CRPS family (Modular Common Redundant Power Supply). Listed only in the Core Options power-supply list, not in the Standard Features power-supply prose.800Platinum1000 W Titanium — HPE M-CRPS family; 96% efficiency; single-output, EU ErP Lot 9 compliant. Rated 800W at 100-120 VAC, 1000W at 200-240 VAC, 1000W at 240 VDC (China only).1000Titanium1300 W null — HPE M-CRPS family; -48VDC input; no efficiency rating printed. Requires power cord P79842-B21 or power lug kit P79845-B21.1300DC1500 W Titanium — HPE M-CRPS family; 96% efficiency; single-output, EU ErP Lot 9 compliant. Rated 1000W at 100 VAC, 1100W at 110-120 VAC, 1500W at 200-240 VAC.1500Titanium2200 W null — HPE M-CRPS family; -48VDC input; no efficiency rating printed. Requires power cord P73874-B21 or power lug kit P79839-B21.2200DC2400 W Titanium — HPE M-CRPS family; 96% efficiency; single-output, EU ErP Lot 9 compliant. Rated 1200W at 100-127 VAC, 2400W at 200-240 VAC.2400Titanium3200 W Titanium — HPE M-CRPS family; 96% efficiency; single-output, EU ErP Lot 9 compliant. Rated 1600W at 100-127 VAC, 3200W at 200-240 VAC.3200TitaniumWatts · dashed line = output at 100–120 V low line
AC−48 V DC
  • On 100–127 V the 3200 W unit is rated at 1600 W and the 2400 W unit at 1200 W; the 1500 W unit delivers 1000 W at 100 V and 1100 W at 110–120 V.
  • Only the 1000, 1500, 2400 and 3200 W Titanium units appear in the Standard Features power text, at 96% efficiency; the 800 W and DC supplies are listed solely as options.
  • The DC units pair with a hard-wired −48 V cord or a lug kit, and HPE says only one of the two is needed: P79842-B21 or P79845-B21 for 1300 W, P73874-B21 or P79839-B21 for 2200 W.
  • Two EU Lot 9 paragraphs quote Flex Slot part numbers (865438-B21, P03178-B21, P44712-B21) that this M-CRPS server does not offer; the Standard Features version lists the M-CRPS parts instead.
07 — Management, security & OS

Run it, secure it, choose the OS

Management

  • HPE iLO 7 (ASIC on DC-SCM module P76981-B21)
  • iLO RESTful API (Redfish conformant)
  • Intelligent Provisioning
  • HPE OneView Standard
  • HPE Compute Ops Management — 3-year subscription added by default
  • Active Health System and Smart Update (SUM / SPP)
  • OpenBMC capable (HPE cites the iLO6 transfer-of-ownership process)
  • Optional HPE iLO Advanced licence
  • Optional System Insight Display (SFF chassis only)

Security

  • Embedded TPM 2.0
  • UEFI Secure Boot and Secure Start
  • iLO- and UEFI-managed encryption, self-encrypting drives
  • One-button secure erase (NIST SP 800-88)
  • FIPS 140-3, NIST SP 800-53 and 800-171 compliance
  • Intrusion detection switch, bezel lock, USB security
  • HPE Trusted Supply Chain option

Operating systems

  • No OS list in the QuickSpecs — it defers to HPE’s Servers Support & Certification Matrices
  • UEFI Class 3; UEFI boot mode only
08 — Compare

How the DL340 Gen12 compares with its family

The DL340 Gen12 is one of HPE’s Gen12 ProLiant rack servers. The matrix below sets it beside the storage-optimised DL340e, the two-socket DL380 and DL360, the 1U single-socket DL320 and the 4U DL380a, each drawn from its own verified spec file.

DL340 Gen12DL340e Gen12DL380 Gen12DL320 Gen12DL360 Gen12DL380a Gen12Cores / CPUDL340 Gen12: 144144DL340e Gen12: 144144DL380 Gen12: 144144DL320 Gen12: 144144DL360 Gen12: 144144DL380a Gen12: 144144DIMM slotsDL340 Gen12: 1616DL340e Gen12: 1616DL380 Gen12: 3232DL320 Gen12: 1616DL360 Gen12: 3232DL380a Gen12: 3232Max memoryDL340 Gen12: 4 TB4DL340e Gen12: 2 TB2DL380 Gen12: 8 TB8DL320 Gen12: 4 TB4DL360 Gen12: 8 TB8DL380a Gen12: 8 TB8Max drive baysDL340 Gen12: 3636DL340e Gen12: 3434DL380 Gen12: 3636DL320 Gen12: 2020DL360 Gen12: 2020DL380a Gen12: 1616Max GPUsDL340 Gen12: 44DL340e Gen12: 00DL380 Gen12: 88DL320 Gen12: 44DL360 Gen12: 33DL380a Gen12: 1010Largest PSUDL340 Gen12: 3,200 W3,200DL340e Gen12: 3,200 W3,200DL380 Gen12: 2,200 W2,200DL320 Gen12: 2,400 W2,400DL360 Gen12: 2,200 W2,200DL380a Gen12: 3,200 W3,200
This modelSiblings and successorEach value from that model’s own verified spec file · bars scale per column
DL340e Gen12 data sheetDL380 Gen12 data sheetDL320 Gen12 data sheetDL360 Gen12 data sheetDL380a Gen12 data sheetDell PowerEdge R570 data sheetDell PowerEdge R470 data sheetLenovo ThinkSystem SR650 V4 data sheet
09 — Use cases

Four builds that suit the DL340 Gen12

Four starting points spread across the three chassis. Each link opens our HPE configurator with these parts already selected — all options it accepts for the DL340.

Hosting & IaaS

Single-socket cloud host

HPE’s overview names IaaS, PaaS and SaaS as the workloads it had in mind. A 64-core Mainline processor drives eight 96 GB DIMMs — one per channel, so the 6400 MT/s rating holds — and eight U.3 NVMe drives under VROC Premium hold the VM datastore.

  • 1 × Xeon 6760P — 64 cores @ 2.2 GHz, 330 W
  • 8 × 96 GB DDR5-6400 — 768 GB, one DIMM per channel
  • 8 × 7.68 TB U.3 NVMe in one 8SFF cage
  • Intel VROC Premium for NVMe RAID
  • NS204i-u v2 mirrored boot pair
  • Intel E810-XXVDA4 4 × 10/25GbE OCP 3.0
  • 2 × 1500 W M-CRPS Titanium

A 330 W processor in the SFF chassis needs the high-performance heat sink.

Open this build in the configurator →
Databases

High-clock SQL host

Sixteen P-cores at 3.7 GHz base, backed by 192 MB of L3, suit databases licensed per core. The MR416i-p adds cached hardware RAID across U.3 NVMe, which HPE’s drive matrix supports for the MR400 series.

  • 1 × Xeon 6725P — 16 cores @ 3.7 GHz, 235 W
  • 8 × 64 GB DDR5-6400 — 512 GB
  • 8 × 3.84 TB U.3 NVMe
  • MR416i-p with 8 GB cache
  • NS204i-u v2 boot
  • Broadcom BCM57414 2 × 10/25GbE OCP 3.0
  • 2 × 1000 W M-CRPS Titanium

The MR416i-p must be ordered with a 96 W battery or a hybrid capacitor kit.

Open this build in the configurator →
AI inference

Four-GPU front-accelerator build

The L40S is supported only in the Front GPU chassis, which HPE documents with four double-wide cards. The four-GPU kit demands a 6XX1P processor, so this build uses the 48-core 6741P, and a 100 GbE OCP adapter keeps networking off the rear slots.

  • 1 × Xeon 6741P — 48 cores @ 2.5 GHz, 300 W
  • 4 × NVIDIA L40S 48GB (Front GPU chassis)
  • 8 × 64 GB DDR5-6400 — 512 GB
  • 4 × 7.68 TB E3.S NVMe
  • Intel E810-CQDA2 2 × 100GbE OCP 3.0
  • 2 × 3200 W M-CRPS Titanium

Needs the 83.71 cm Front GPU CTO chassis, the four-GPU enablement kit, the L40S power cable kit, performance fans and the high-performance heat sink; we check cooling and supply sizing when we quote.

Open this build in the configurator →
DC power & NEBS

−48 V DC compute node

For sites that run on −48 V DC, HPE lists 1300 W and 2200 W DC supplies and a NEBS-compliant riser kit. A 24-core RICH I/O part at 225 W keeps the draw modest, and the 63.95 cm SFF chassis is the shortest DL340.

  • 1 × Xeon 6521P — 24 cores @ 2.6 GHz, 225 W
  • 8 × 32 GB DDR5-6400 — 256 GB
  • 4 × 1.92 TB U.3 NVMe under VROC
  • NS204i-u v2 boot
  • Broadcom BCM57504 4 × 10/25GbE OCP 3.0
  • 2 × 1300 W −48 V DC M-CRPS

A NEBS build needs HPE’s NEBS riser (not mixed with other risers), the high-performance heat sink and six performance fans, and the DC supplies need a −48 V cord or lug kit — we add these at quote.

Open this build in the configurator →
10 — Refurbished alternatives

When a refurbished ProLiant makes more sense

HPE calls the DL340 Gen12 an all-new server, and our refurbished configurator has no earlier DL340. Where DDR4 and PCIe 4.0 are acceptable, these ProLiant models from our refurbished configurator cover similar ground.

Gen10 Plus · re-certified

HPE ProLiant DL380 Gen10 Plus

  • 2U · two Ice Lake Xeon sockets
  • Up to 8 TB DDR4-3200 · 32 DIMM slots
  • 24 × SFF or 12 × LFF bays
  • PCIe 4.0 · OCP 3.0 · iLO 5

The same 2U footprint with SFF or LFF bays, for buyers who can accept DDR4.

Configure a refurbished DL380 Gen10 Plus →
Gen10 Plus · re-certified

HPE ProLiant DL325 Gen10 Plus

  • 1U · one AMD EPYC 7002/7003
  • Up to 64 cores · 128 PCIe 4.0 lanes
  • Up to 4 TB DDR4 · 16 DIMM slots
  • 10 × SFF / NVMe · iLO 5

Keeps the one-socket approach, provided 1U and ten bays are enough.

Configure a refurbished DL325 Gen10 Plus →
Gen10 · re-certified

HPE ProLiant DL380 Gen10

  • 2U · two Xeon Scalable sockets
  • Up to 3 TB DDR4 · 24 DIMM slots
  • 24 × SFF or 12 × LFF bays
  • GPU-capable · iLO 5

An older Gen10 2U option for file, backup or lab work.

Configure a refurbished DL380 Gen10 →
Refurbished HPE ProLiant serversRefurbished ProLiant configuratorNew vs refurbished cost calculator
11 — Full specifications

HPE ProLiant Compute DL340 Gen12 specifications

Chassis & cooling

Form factor2U rack · three CTO chassis: SFF (P71452-B21), LFF (P75727-B21), Front GPU (P75728-B21)
Dimensions (H × W × D)8.75 × 44.8 cm · depth 63.95 cm (8SFF/24SFF/EDSFF), 65.61 cm (12LFF), 83.71 cm (GPU)
WeightSFF 17.6–30.9 kg · EDSFF 17.4–30.71 kg · LFF 18.98–32.88 kg · GPU 26.5–36.3 kg
FansSix required — standard or performance kits, never mixed
Liquid coolingOptional DLC FIO kit P84592-B21; ships as a whole 42U or 48U rack
DesignDC-MHS modular hardware · M-CRPS power supplies
RailsOptional; Ball Bearing Rail 6 kit for the GPU chassis

Processor

SocketsOne
FamiliesXeon 6 E-core and P-core: Performance per Watt, Performance, Mainline, Single Socket (RICH I/O), High Performance AI
Cores8 to 144 (6766E, 6780E)
TDP range135 W to 350 W
PCIe lanes136 with RICH I/O processors

Memory

Slots16 DDR5 RDIMM · 8 channels × 2 DIMMs
DIMM sizes16, 32, 64, 96, 128 and 256 GB
Speed6400 MT/s (1 DPC) · 5200 MT/s (2 DPC)
Maximum4 TB (16 × 256 GB)

Storage

SFF chassisUp to 24 × 2.5" (3 × 8SFF cages) or up to 36 × E3.S NVMe
LFF chassisUp to 12 × 3.5" SAS/SATA (3 × 4LFF backplanes)
GPU chassisBox 2: 8 × 2.5" or 12 × E3.S NVMe
ControllersMR216i-o, MR216i-p, MR408i-o, MR416i-o, MR416i-p, MR932i-p · Intel VROC for NVMe
BootNS204i-u v2 — 2 × NVMe, RAID 1 preset
OpticalOptional DVD on SFF/EDSFF and LFF chassis

Expansion & networking

PCIeSlot 3 and Slot 6 — PCIe 5.0 x16 FHHL on optional risers
OCP 3.0Rear OCP A (embedded), rear OCP B and two front slots (optional) — PCIe 5.0 x16
Embedded NICNone — OCP or PCIe adapter required

Accelerators

OptionsNVIDIA L4 24GB · NVIDIA L40S 48GB (GPU CTO server only)
Documented maximumFour double-wide, Front GPU chassis (weight table)

Power

SuppliesM-CRPS hot-plug, no mixing
AC800 W Platinum · 1000, 1500, 2400, 3200 W Titanium
DC1300 W and 2200 W −48 VDC
Input100–120 VAC or 200–240 VAC; 240 VDC in China

Ports, video & support

Front1 × USB 3.2 Gen1 · USB-C iLO service port · optional DisplayPort
Rear2 × USB 3.2 Gen1 · VGA on DC-SCM · 1 GbE iLO port · optional serial
Internal1 × USB 3.2 Gen1
Video16 MB, up to 1920 × 1200 at 60 Hz
Acoustics (idle)39 dBA Entry-SFF · 41 dBA Base-LFF test configurations
Warranty3 years parts, labour and onsite, next business day
12 — FAQ

DL340 Gen12 questions, answered from the documentation

What is the maximum memory of the HPE ProLiant DL340 Gen12?

4 TB, which means filling all sixteen RDIMM slots with 256 GB 3DS modules — two per channel, so 5200 MT/s. With one DIMM in each of the eight channels the memory runs at 6400 MT/s instead. Any 256 GB module, or nine DIMMs or more, requires the high-performance fan kit.

What is the difference between the DL340 Gen12 and the DL340e Gen12?

HPE builds the DL340 on three chassis — SFF/EDSFF, 12LFF and Front GPU — with a 4 TB memory ceiling and L4 or L40S accelerators. The DL340e has a single storage-optimised LFF chassis taking 16 or 24 front 3.5-inch drives, a rear choice of E3.S flash or up to six PCIe slots, and a 2 TB limit. It is also 80.65 cm deep, where the DL340 SFF chassis is 63.95 cm.

Which processors does the DL340 Gen12 support?

Thirty-three Intel Xeon 6 option kits, from the 8-core 6503P at 135 W to the 144-core 6766E and 6780E, with 350 W the highest TDP. Six Single Socket (RICH I/O) models bring 136 PCIe lanes, and the 64-core 6774P is restricted to AI-server host use.

How many drives can the DL340 Gen12 hold?

It depends on the chassis. The SFF model takes 24 × 2.5-inch drives in three 8-bay cages or up to 36 E3.S NVMe drives with the EDSFF front cage; the LFF model holds 12 × 3.5-inch; the Front GPU model keeps 8 × 2.5-inch or 12 E3.S. HPE’s largest capacity figure is 552.9 TB from 36 × 15.36 TB NVMe drives.

Does the DL340 Gen12 support GPUs?

Two are listed: the NVIDIA L4 24GB and the L40S 48GB, and the L40S is limited to the Front GPU chassis. HPE’s GPU-chassis weight table includes a four-card double-wide configuration, which uses the four-GPU enablement kit and needs a Single Socket 6XX1P processor.

How many PCIe and OCP slots does the DL340 Gen12 have?

Two CEM slots at the rear — Slot 3 and Slot 6, PCIe 5.0 x16 FHHL, each on an optional riser. OCP 3.0 is more generous: OCP A is embedded at the rear, OCP B is optional, and the SFF and GPU chassis can add two front OCP slots, all PCIe 5.0 x16. For the LFF chassis HPE’s base-model table says OCP is not supported, yet it lists LFF OCP B cable kits, so we confirm OCP on LFF builds at quote.

Which power supplies can the DL340 Gen12 use?

Seven M-CRPS models: an 800 W Platinum unit, Titanium units from 1000 W to 3200 W, and two −48 V DC units of 1300 W and 2200 W. A server cannot mix types, and on 100–127 V input the 3200 W and 2400 W supplies are rated at 1600 W and 1200 W.

How big and heavy is the DL340 Gen12?

Every chassis is 8.75 cm high and 44.8 cm wide. Depth is 63.95 cm for the SFF and EDSFF versions, 65.61 cm for 12LFF and 83.71 cm for the GPU chassis. HPE’s heaviest listed configurations run from 30.71 kg (36 E3.S drives) to 36.3 kg (GPU chassis with four double-wide cards).

Is there an earlier DL340 generation to compare it with?

Not in HPE’s documentation: the QuickSpecs call the DL340 Gen12 an all-new server and contain no comparison with a predecessor. For a lower-cost route, our refurbished range offers the DL380 Gen10 Plus and the single-socket DL325 Gen10 Plus.

Is the HPE ProLiant DL340 Gen12 end of life?

Not according to HPE’s QuickSpecs, which reached Version 15 on 8 September 2026 with a processor added and no withdrawal notice. The document gives no end-of-service date for the model; our server end-of-life checker records such dates once vendors publish them.

Sources & verification

Where these figures come from

Specifications are extracted from HPE’s published documents and independently re-checked line by line. Configurations are quote-based; availability and exact options are confirmed at quotation. Last reviewed 2026-09-11.

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