Technical data sheet · ProLiant Compute Gen12 · 1U single-socket AMD EPYC 9005

HPE ProLiant Compute DL325 Gen12Specifications, configurations & comparisons

The ProLiant Compute DL325 Gen12 is HPE’s 1U, one-socket server for 5th Gen AMD EPYC, and its defining change is memory: 24 DIMM slots at two per channel, for up to 6 TB behind a single processor. This page maps the whole envelope in the QuickSpecs — 23 processors up to 192 cores and 500 W, mixable SFF and E3.S front boxes, front OCP, liquid cooling — and the speed and thermal rules attached to it.

1U Rack1 socketAMD EPYC 9005HPE iLO 7

192cores on one socketEPYC 9965 · 500 W cTDP

6TBDDR5 maximum24 × 256 GB · 2 DIMMs per channel

20E3.S NVMe baysor 10 × SFF · both can mix

6PCIe 5.0 x16 slotsGPU chassis · 2 on the others

4NVIDIA L4 GPUsGPU chassis front · others 2 at rear

2,400Wlargest PSUM-CRPS Titanium · 1,200 W at 100–127 V

Configure a DL325 Gen12 →Get a UK quote Refurbished alternatives ↓

Every figure checked against the HPE ProLiant Compute DL325 Gen12 QuickSpecs (Version 12 - 03-Aug-2026)

Image: Hewlett Packard Enterprise

Form factor: 1U Rack · 1 socket
Processors: AMD EPYC 9005
Memory: 24 × DDR5 RDIMM · up to 6 TB
Drive bays: Up to 20 · 6 drive-cage kits
Expansion: 6 × PCIe · 2 × OCP 3.0
GPUs: Up to 4 · 1 listed
Boot: NS204i · 5 boot options
Management: HPE iLO 7

01 — Overview

The DL325 Gen12 at a glance

Our read of HPE’s documentation: where the DL325 Gen12 is strong, and the limits worth knowing before you spec one.

Strengths

Twice the DIMM slots of the DL325 Gen11 in the same 1U height: 24 slots at two per channel take one socket to 6 TB with 256 GB kits.
Twenty-three 5th Gen EPYC processors are listed, topping out with the 192-core, 500 W EPYC 9965.
The SFF/EDSFF chassis fills five front boxes with 2-bay SFF or 4-bay E3.S backplanes in any mix; front NS204i-u, front OCP and media-bay options take box positions instead.
iLO 7 watches the closed-loop liquid-cooling module for leaks, and a direct liquid cooling kit is offered, shipped as part of a complete rack.
The GPU chassis reaches six PCIe 5.0 x16 slots, and the SFF/EDSFF model can move both OCP 3.0 cards to the front.

Watch-outs

Memory slows as it fills: HPE quotes 5200 MT/s at one DIMM per channel and either 4400 or 4000 MT/s at two, depending on which of its own tables you read.
HPE’s memory thermal matrix marks the 256 GB 3DS DIMM “Not Supported” in its 4LFF and 8SFF columns and 25 °C in the other cells it prints.
Only 5th Gen EPYC is listed, so 4th Gen (9004) processors from existing servers cannot be carried across.
On the GPU chassis any processor above 300 W needs a direct liquid cooling kit, and DLC systems ship only as complete racks.
The single-width NVIDIA L4 is the only GPU in the option list, whatever the overview says about double-width support.

Processors23 SKUs

Cores / CPU8–192

DIMM slots24

Drive-cage kits6

Max bays20

GPUsup to 4

PSU options6 · to 2,400 W

02 — Processors

23 supported processors, mapped

Twenty-three processors, every one from AMD’s 5th Gen EPYC 9005 series, spanning 8 cores at 125 W (EPYC 9015) to 192 cores at 500 W (EPYC 9965). The chart below places each by core count and cTDP. With one socket, the processor also decides the build’s PCIe budget (128 lanes of PCIe 5.0) and memory channels (12).

Processor landscape — cores × TDP

23 SKUs · 1 family

AMD EPYC 9005 23Bubble size = L3 cache · hover a bubble for the full SKU

Processor explorer

filter · sort · compare

Sort

Processor	Cores / threads	Base	L3 cache	TDP	W / core	Memory
AMD EPYC 9965	192	2.25 GHz	384 MB	500 W	2.6	DDR5-6400
AMD EPYC 9845	160	2.1 GHz	320 MB	390 W	2.4	DDR5-6400
AMD EPYC 9825	144	2.2 GHz	384 MB	390 W	2.7	DDR5-6400
AMD EPYC 9755	128	2.7 GHz	512 MB	500 W	3.9	DDR5-6400
AMD EPYC 9745	128	2.4 GHz	256 MB	400 W	3.1	DDR5-6400
AMD EPYC 9655P	96	2.6 GHz	384 MB	400 W	4.2	DDR5-6400
AMD EPYC 9645	96	2.3 GHz	256 MB	320 W	3.3	DDR5-6400
AMD EPYC 9565	72	3.15 GHz	384 MB	400 W	5.6	DDR5-6400
AMD EPYC 9575F	64	3.3 GHz	256 MB	400 W	6.3	DDR5-6400
AMD EPYC 9555P	64	3.2 GHz	256 MB	360 W	5.6	DDR5-6400
AMD EPYC 9535	64	2.4 GHz	256 MB	300 W	4.7	DDR5-6400
AMD EPYC 9475F	48	3.65 GHz	256 MB	400 W	8.3	DDR5-6400
AMD EPYC 9455P	48	3.15 GHz	256 MB	300 W	6.3	DDR5-6400
AMD EPYC 9365	36	3.4 GHz	192 MB	300 W	8.3	DDR5-6400
AMD EPYC 9375F	32	3.8 GHz	256 MB	320 W	10.0	DDR5-6400
AMD EPYC 9355P	32	3.55 GHz	256 MB	280 W	8.8	DDR5-6400
AMD EPYC 9335	32	3 GHz	128 MB	210 W	6.6	DDR5-6400
AMD EPYC 9275F	24	4.1 GHz	256 MB	320 W	13.3	DDR5-6400
AMD EPYC 9255	24	3.2 GHz	128 MB	200 W	8.3	DDR5-6400
AMD EPYC 9175F	16	4.2 GHz	512 MB	320 W	20.0	DDR5-6400
AMD EPYC 9135	16	3.65 GHz	64 MB	200 W	12.5	DDR5-6400
AMD EPYC 9115	16	2.6 GHz	64 MB	125 W	7.8	DDR5-6400
AMD EPYC 9015	8	3.6 GHz	64 MB	125 W	15.6	DDR5-6400

Air cooling follows wattage: 240 W or less uses the Standard heat sink and fan, 260–300 W the Performance pair, and 320 W or more the closed-loop liquid-cooling heat sink with Liquid Cooling fans.
The closed-loop heat sink cannot go in the GPU chassis; there, anything above 300 W needs direct liquid cooling.
Two parts reach 500 W: the 192-core EPYC 9965 and the 128-core EPYC 9755 with 512 MB of L3.
With a direct liquid cooling kit fitted, HPE supports every processor at 30 °C.
HPE lists the EPYC 9255 at 3.25 GHz base in its feature table and 3.20 GHz in the option-kit name.

03 — Memory

24 DDR5 DIMM slots

Each of the 12 DDR5 channels takes two RDIMMs, giving 24 slots on one socket. Populations of up to twelve DIMMs (one, or any even number) run at the one-per-channel speed; 16, 20 or 24 DIMMs drop to the two-per-channel speed. Five capacities are listed, 32 GB to 256 GB, all of them DDR5-6400 kits.

Capacity with every slot filled

by DIMM size

Operating speed

per HPE memory tables

Processor	1 DIMM / channel	2 DIMMs / channel
5th Gen AMD EPYC 9005 (all kits)	5200 MT/s	4000 / 4400 MT/s*

* The Core Options DIMM table and the 6 TB capacity line give 4000 MT/s at two DIMMs per channel; the Standard Features memory bullets say 4400 MT/s. Both figures are HPE’s own.
6 TB needs all 24 slots filled with 256 GB 3DS kits; twelve of them at one per channel give 3 TB at 5200 MT/s.
DIMM organisation must stay uniform — x4 cannot join x8, and 3DS cannot join standard RDIMMs; there is no LRDIMM or persistent-memory support, and RAS is Advanced ECC.
Any 96, 128 or 256 GB DIMM forces the Performance fan even with a processor of 240 W or less.
HPE’s notes also mention 5600 and 4800 MT/s DIMMs with Turin processors without further detail; no such kit is on the option list.

04 — Storage

6 drive-cage kits, up to 20 bays

Four configure-to-order chassis define the front. The 8SFF model takes an 8-bay backplane plus a 2-bay kit, the 4LFF model ships with its four bays, the SFF/EDSFF model fills five front boxes with 2-bay SFF or 4-bay E3.S backplanes in any mix, and the GPU model has two boxes. The layouts below are those chassis maxima.

Headline layouts

front panel view

Front panel

SFF/EDSFF CTO with a 4-bay E3.S 1T backplane in each of its five boxes. HPE’s capacity table reaches 614.4 TB with 20 × 30.72 TB drives.

SAS/SATANVMeSAS/SATA + NVMe

Controllers & boot

HPE NS204i-u v2 480GB NVMe Hot Plug Boot Optimized Storage Device — Boot. x4 PCIe Gen3 boot device with 2 x M.2 NVMe SSDs, preconfigured hardware RAID1; hot-plug; front (Box3 of SFF/EDSFF CTO or Box2 of GPU CTO, cable kit P77186-B21), rear Slot 1 (low-profile riser P81926-B21) or beside PSU 2 (cable kit P71433-B21, 60mm-wide M-CRPS only)
HPE NS204i-u v2 960GB NVMe Hot Plug Boot Optimized Storage Device — Boot. 2 x M.2 NVMe, hardware RAID1; same three mounting locations
HPE NS204i-u v2 960GB NVMe SED Hot Plug Boot Optimized Storage Device — Boot. Self-encrypting variant; 2 x M.2 NVMe, hardware RAID1
HPE MR216i-o Gen11 x16 Lanes without Cache OCP SPDM Storage Controller — RAID. OCP form factor (OROC); no cache
HPE MR216i-p Gen11 x16 Lanes without Cache PCI SPDM Plug-in Storage Controller — RAID. PCIe plug-in; no cache
HPE MR408i-o Gen11 x8 Lanes 4GB Cache OCP SPDM Storage Controller — RAID, 4GB cache. OCP form factor (OROC)
HPE MR408i-p Gen11 x8 Lanes 4GB Cache PCI SPDM Plug-in Storage Controller — RAID, 4GB cache. PCIe plug-in (Standard Features list mis-names it 'OCP SPDM Storage Controller')
HPE MR416i-o Gen11 x16 Lanes 8GB Cache OCP SPDM Storage Controller — RAID, 8GB cache. OCP form factor (OROC)
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 DL320 Gen12 NS204i-u Front Cable Kit (P77186-B21) — boot

All 11 controllers and 5 boot options

HPE MR416i-p Gen11 x16 Lanes 8GB Cache PCI SPDM Plug-in Storage Controller — RAID, 8GB cache. PCIe plug-in
HPE MR932i-p x32 Lanes PCIe Gen5 SPDM Plug-in Storage Controller — RAID. PCIe Gen5 plug-in, x32 lanes; cache not stated in this document. Used by SFF/EDSFF configs 2-19/2-20/2-21 (x2, cable kits P87896-B21 / P87897-B21) and GPU config 4-11 (x4, cable kit P87894-B21). Added in V8 (06-Apr-2026).
HPE Smart Array E208e-p SR Gen10 (8 External Lanes/No Cache) 12G SAS PCIe Plug-in Controller — RAID. External 12G SAS, 8 external lanes, no cache; listed only in the Configuration Information / Core Options storage-controller lists, not in the Standard Features 'HPE Hardware RAID Controller Options' list. Type recorded as RAID from the 'SR' (Smart RAID) product name; the document gives no further classification.
HPE ProLiant Compute DL3XX Gen12 NS204i-u Rear Cable Kit (P71433-B21) — boot

On the SFF/EDSFF chassis a front NS204i-u or front OCP kit occupies Box 3, leaving four drive boxes; the Universal Media Bay takes Boxes 4 and 5, leaving three.
Controllers are the MR216i-o/-p, MR408i-o/-p and MR416i-o/-p, the x32 PCIe Gen5 MR932i-p, and the external Smart Array E208e-p.
Boot comes from an NS204i-u v2 module in 480 GB, 960 GB or self-encrypting 960 GB form, mounted at rear slot 1 on a low-profile riser, beside a 60 mm M-CRPS power supply, or in the front cage.
HPE’s One Config Advanced “Smart Chassis” step picks ambient temperature, front cage and storage connection first, then returns a config ID for the rest of the build.

Every documented drive-cage kit

6 with drive bays

2.5-inch3.5-inchEDSFF (E1.S / E3.S)

05 — Accelerators & I/O

GPUs, PCIe and networking

HPE’s graphics list holds one card, the 24 GB NVIDIA L4, a half-height single-width board on PCIe Gen4 x16. The GPU chassis carries four at the front; the 8SFF, 4LFF and SFF/EDSFF chassis take two at the rear, each slot with its own ambient limit. The overview’s mention of double-width GPUs is not matched by any card on the list. Up to 4 × NVIDIA L4 at the front of the GPU chassis · 2 at the rear of the others.

NVIDIA L4 24GB PCIe Accelerator for HPE

single-wide

24GB · up to 2 (rear, 8SFF/4LFF/SFF-EDSFF CTO); up to 4 (front, GPU CTO)

I/O topology

128 lanes per CPU

The single socket’s 128 PCIe 5.0 lanes feed up to six x16 slots on the GPU chassis (two on the others) and two OCP 3.0 cards, which the SFF/EDSFF model can re-route to the front of the server.

Network adapters HPE lists

36 options

Adapter	Ports	Form
AMD Solarflare X4522-PLUS 10/25GbE 2-port SFP56 Adapter for HPE	2 × 10/25GbE	PCIe
Broadcom BCM5719 Ethernet 1Gb 4-port BASE-T Adapter for HPE	4 × 1GbE	PCIe
Broadcom BCM57416 Ethernet 10Gb 2-port BASE-T Adapter for HPE	2 × 10GbE	PCIe
Broadcom BCM57412 Ethernet 10Gb 2-port SFP+ Adapter for HPE	2 × 10GbE	PCIe
Broadcom BCM57414 Ethernet 10/25Gb 2-port SFP28 Adapter for HPE	2 × 10/25GbE	PCIe
Broadcom BCM57504 Ethernet 10/25Gb 4-port SFP28 Adapter for HPE	4 × 10/25GbE	PCIe
Intel E810-XXVDA2 Ethernet 10/25Gb 2-port SFP28 Adapter for HPE	2 × 10/25GbE	PCIe
Mellanox MCX631102AS-ADAT Ethernet 10/25Gb 2-port SFP28 Adapter for HPE	2 × 10/25GbE	PCIe
Intel E810-XXVDA4 Ethernet 10/25Gb 4-port SFP28 Adapter for HPE	4 × 10/25GbE	PCIe
NVIDIA Ethernet 10/25Gb 2-port SFP28 NVMe-oF Crypto Adapter for HPE	2 × 10/25GbE	PCIe
Mellanox MCX623106AS-CDAT Ethernet 100Gb 2-port QSFP56 Adapter for HPE	2 × 100GbE	PCIe
Intel E810-CQDA2 Ethernet 100Gb 2-port QSFP28 Adapter for HPE	2 × 100GbE	PCIe
NVIDIA Ethernet 100Gb 2-port NVMe-oF Offload Adapter for HPE	2 × 100GbE	PCIe
Broadcom BCM57608 Ethernet 100Gb 2-port QSFP112 Adapter for HPE	2 × 100GbE	PCIe
Broadcom BCM5719 Ethernet 1Gb 4-port BASE-T OCP3 Adapter for HPE	4 × 1GbE	OCP 3.0
Broadcom BCM57412 Ethernet 10Gb 2-port SFP+ OCP3 Adapter for HPE	2 × 10GbE	OCP 3.0
Broadcom BCM57416 Ethernet 10Gb 2-port BASE-T OCP3 Adapter for HPE	2 × 10GbE	OCP 3.0
Broadcom BCM57414 Ethernet 10/25Gb 2-port SFP28 OCP3 Adapter for HPE	2 × 10/25GbE	OCP 3.0
Broadcom BCM57504 Ethernet 10/25Gb 4-port SFP28 OCP3 Adapter for HPE	4 × 10/25GbE	OCP 3.0
Intel E810-XXVDA2 Ethernet 10/25Gb 2-port SFP28 OCP3 Adapter for HPE	2 × 10/25GbE	OCP 3.0
Intel E810-XXVDA4 Ethernet 10/25Gb 4-port SFP28 OCP3 Adapter for HPE	4 × 10/25GbE	OCP 3.0
Mellanox MCX631432AS-ADAI Ethernet 10/25Gb 2-port SFP28 OCP3 Adapter for HPE	2 × 10/25GbE	OCP 3.0
Intel E810-CQDA2 Ethernet 100Gb 2-port QSFP28 OCP3 Adapter for HPE	2 × 100GbE	OCP 3.0
Broadcom BCM57608 Ethernet 100Gb 2-port QSFP112 OCP3 Adapter for HPE	2 × 100GbE	OCP 3.0
HPE InfiniBand NDR200/Ethernet 200GbE 2-port QSFP112 PCIe5 x16 MCX755106AC-HEAT Adapter	2 × NDR200 InfiniBand / 200GbE	PCIe
HPE InfiniBand NDR/Ethernet 400Gb 1-port OSFP PCIe5 x16 MCX75310AAS-NEAT Generic Adapter	1 × NDR InfiniBand / 400GbE	PCIe
HPE InfiniBand NDR200/Ethernet 200Gb 1-port OSFP PCIe5 x16 MCX75310AAS-HEAT Generic Adapter	1 × NDR200 InfiniBand / 200GbE	PCIe
HPE InfiniBand XDR/Ethernet 2x400GbE 1-port OSFP PCIe6 x16 HHHL CX8 Crypto Adapter	1 × XDR InfiniBand / 2x400GbE	PCIe
HPE InfiniBand XDR400/Ethernet 400GbE 2-port QSFP112 PCIe6 x16 HHHL CX8 Crypto Adapter	2 × XDR400 InfiniBand / 400GbE	PCIe
HPE InfiniBand XDR PCIe Gen6 x16 Multi Host/Socket Direct Auxiliary Card with 250mm MCIO Cable Kit	× XDR InfiniBand (auxiliary)	PCIe
HPE SN1610Q 32Gb 1-port Fibre Channel Host Bus Adapter	1 × 32Gb Fibre Channel	PCIe
HPE SN1610Q 32Gb 2-port Fibre Channel Host Bus Adapter	2 × 32Gb Fibre Channel	PCIe
HPE SN1700Q 64Gb 1-port Fibre Channel Host Bus Adapter	1 × 64Gb Fibre Channel	PCIe
HPE SN1700Q 64Gb 2-port Fibre Channel Host Bus Adapter	2 × 64Gb Fibre Channel	PCIe
HPE SN1620E 32Gb 2p FC SecureHBA	2 × 32Gb Fibre Channel	PCIe
HPE SN1720E 64Gb 2p FC SecureHBA	2 × 64Gb Fibre Channel	PCIe

AMD’s limit caps four pairings at 112 GB/s combined: slot 3 with OCP A, slot 4 with slot 2, slot 6 with slot 1, and slot 5 with OCP B.
OCP B is not hard-wired to the processor; one or two x8 enablement kits (P81908-B21) set its bandwidth.
Front Primary and Front Secondary OCP re-route rear slots B and A; the secondary front slot offers Wake-on-LAN but not shared NIC.
HPE’s tables disagree on GPU-chassis slot defaults: Step 1 lists slots 1 and 3–6 as default and slot 2 optional, while the expansion table marks slot 1 optional and slot 2 default.
There is no embedded NIC; ports come from OCP 3.0 or PCIe adapters.

06 — Power & cooling

6 power supplies, 800–2,400 W

Gen12 moves the DL325 to M-CRPS (Modular Common Redundant Power Supplies), hot-plug and tool-less, in 73.5 mm and 60 mm widths. The AC units are an 800 W Platinum and 1000, 1500 and 2400 W Titanium; −48 V DC units come at 1300 W and 2200 W. Different supply types cannot share a server.

AC−48 V DC

Low-line output falls short of the label: 650 W from the 800 W unit and 800 W from the 1000 W (100–120 VAC), 1000–1100 W from the 1500 W (100–120 VAC) and 1200 W from the 2400 W (100–127 VAC).
Every AC unit except the 800 W is rated at 96% efficiency, the level ErP Lot 9 demands of single-output supplies sold into the UK and EEA since January 2024.
HPE lists a −48 VDC power lug kit for each DC size: P79845-B21 (1000–1300 W) and P79839-B21 (2000–2200 W).
Seven fan kits are fitted in every configuration, with redundancy: one failed rotor degrades the server, two can trigger shutdown.
The closed-loop liquid heat sink reports leaks to iLO 7, which shuts the server down and blocks power-on until cleared; HPE advises swapping the module after five years.
Direct liquid cooling uses a cold-plate module plus a CTO-specific quick-disconnect tube kit, needs seven Performance fans and ships only as a whole 42U or 48U rack.

07 — Management, security & OS

Run it, secure it, choose the OS

Management

HPE iLO 7 (iLO 7 ASIC) with Intelligent Provisioning
iLO Advanced and OneView optional
HPE Compute Ops Management — 3-year subscription added by default
iLO RESTful API (Redfish), IPMI 2.0, SNMP v3
OpenBMC capable through iLO 7 transfer of ownership
HPE iLO mobile app
Dedicated 1GbE rear iLO port · front service port on USB Type-C

Security

Secure Enclave — Silicon Root of Trust 2.0
Quantum-resistant (PQC) readiness for firmware signing — CNSA 2.0
Secure Standard Mode as the default security mode
TPM 2.0 embedded in the DC-SCM (can be disabled in BIOS)
FIPS 140-3 and Common Criteria certification planned
One-button secure erase to NIST SP 800-88
Self-encrypting drives, iLO-managed and UEFI-managed encryption
Front bezel key lock, padlock and Kensington slots · optional intrusion detection
Optional HPE Trusted Supply Chain

Operating systems

Operating-system certification is published in HPE’s Servers Support & Certification Matrices rather than in the QuickSpecs
UEFI Class 3 with Secure Boot and Secure Start

08 — Compare

How the DL325 Gen12 compares with its family

The DL325 Gen12 against its predecessor and HPE’s other current 1U and 2U rack servers; each bar reflects the limits in that model’s spec file.

This modelSiblings and successorEach value from that model’s own verified spec file · bars scale per column

DL325 Gen11 data sheet DL345 Gen12 data sheet DL320 Gen12 data sheet DL360 Gen12 data sheet DL380 Gen12 data sheet Dell PowerEdge R6715 data sheet Lenovo ThinkSystem SR635 V3 data sheet Dell PowerEdge R7715 data sheet

09 — Use cases

Four builds that suit the DL325 Gen12

Four builds that lean on what the Gen12 adds — two DIMMs per channel, 500 W-class processors, a front GPU cage and DC power. Every option in them is one the configurator permits for the DL325 Gen12, and each loads there ready to edit.

Virtualisation

Memory-heavy VM host

Twenty-four 64 GB DIMMs give 1.5 TB — twice what the same kits reach in a 12-slot server — behind a 96-core processor, with ten U.3 NVMe drives for the datastore and a mirrored boot device kept off the drive bays.

1 × AMD EPYC 9655P — 96 cores @ 2.6 GHz, 400 W
24 × 64 GB DDR5-6400 — 1.5 TB at two DIMMs per channel
10 × 3.84 TB U.3 NVMe (8SFF x4 + 2SFF x4 backplanes)
NS204i-u v2 hot-plug boot mirror
Broadcom BCM57504 4 × 25GbE SFP28 OCP 3.0
2 × 1500 W M-CRPS Titanium

At 400 W the processor needs the closed-loop liquid-cooling heat sink and its fan kit, and a 24-DIMM build runs at HPE’s two-per-channel speed (4000 or 4400 MT/s, by table).

Open this build in the configurator →

In-memory data

6 TB single-socket database node

Twenty-four 256 GB 3DS DIMMs reach the 6 TB ceiling on one processor, for in-memory databases and analytics that need capacity more than cores. A 300 W, 48-core part keeps the air-cooled heat sink, and four E3.S drives hold logs and checkpoints.

1 × AMD EPYC 9455P — 48 cores @ 3.15 GHz, 300 W
24 × 256 GB DDR5-6400 3DS RDIMM — 6 TB
4 × 7.68 TB E3.S NVMe in the SFF/EDSFF chassis
NS204i-u v2 hot-plug boot mirror
Broadcom BCM57608 2 × 100GbE QSFP112 OCP 3.0
2 × 1500 W M-CRPS Titanium

The 256 GB 3DS DIMM is not supported in the 4LFF or 8SFF chassis and is held to 25 °C ambient where HPE’s thermal matrix allows it.

Open this build in the configurator →

Inference

Four-L4 front-GPU node

The GPU chassis puts four single-width L4 cards at the front, with up to six x16 slots overall and E3.S storage alongside. A 300 W, 64-core processor keeps the server on air, which this chassis requires unless you move to direct liquid cooling.

1 × AMD EPYC 9535 — 64 cores @ 2.4 GHz, 300 W
4 × NVIDIA L4 24 GB at the front (single-width)
12 × 64 GB DDR5-6400 — 768 GB at 5200 MT/s
4 × 7.68 TB E3.S NVMe
Broadcom BCM57608 2 × 100GbE QSFP112 OCP 3.0
2 × 2400 W M-CRPS Titanium

In the GPU chassis the closed-loop heat sink is not allowed, so processors above 300 W need direct liquid cooling; the front NS204i-u, if wanted, can only go in Box 2.

Open this build in the configurator →

DC power

−48 V DC edge node

The −48 V DC M-CRPS units let the DL325 Gen12 run from a −48 V DC supply rather than AC. A 24-core, 200 W processor stays on the Standard heat sink, and eight SATA SSDs sit behind an OCP-form MR416i-o RAID controller.

1 × AMD EPYC 9255 — 24 cores @ 3.2 GHz, 200 W
12 × 32 GB DDR5-6400 — 384 GB
8 × 1.92 TB SATA SSD, hardware RAID
MR416i-o OCP controller (8 GB cache)
Broadcom BCM57414 2 × 25GbE SFP28 OCP 3.0
2 × 1300 W −48 V DC M-CRPS

HPE lists a 1000–1300 W −48 VDC power lug kit to go with the 1300 W units, and different supply types cannot be mixed in one server.

Open this build in the configurator →

10 — Refurbished alternatives

When a refurbished ProLiant makes more sense

The Gen12’s 6 TB and 192-core ceiling is more than many single-socket jobs use. For lighter roles, re-certified previous-generation AMD ProLiant servers from our refurbished configurator cover the ground.

Gen10 Plus · re-certified

HPE ProLiant DL325 Gen10 Plus

One EPYC 7002/7003 in 1U
Up to 64 cores
16 DIMM slots · up to 4 TB DDR4
128 PCIe 4.0 lanes · iLO 5

The same 1U, one-socket shape two generations back — right when 64 cores and DDR4 already cover the workload.

Configure a refurbished DL325 Gen10 Plus →

Gen10 Plus · re-certified

HPE ProLiant DL385 Gen10 Plus

Two EPYC 7002/7003 in 2U
Up to 128 cores
32 DIMM slots · up to 8 TB DDR4
24 SFF or 12 LFF · iLO 5

If memory capacity is the draw, a refurbished two-socket 2U reaches 8 TB of DDR4 instead of 6 TB of DDR5.

Configure a refurbished DL385 Gen10 Plus →

Refurbished HPE ProLiant servers Refurbished ProLiant configurator New vs refurbished cost calculator

11 — Full specifications

HPE ProLiant Compute DL325 Gen12 specifications

Chassis & cooling

Form factor	1U rack · one processor
Chassis types	8SFF · 4LFF · SFF/EDSFF · GPU
Height × width	4.29 × 43.46 cm
Depth	8SFF 60.94 cm · 4LFF and SFF/EDSFF 66.7 cm · GPU 82.18 cm
Maximum weight	8SFF 18.55 kg · 4LFF 19.82 kg · SFF/EDSFF 19.91 kg · GPU 22.86 kg
Fans	7 fan kits, redundant · Standard, Performance or Liquid Cooling
Liquid cooling	Closed-loop heat sink (320 W and up) · optional direct liquid cooling, rack-shipped
Operating temperature	10–35 °C standard · 5–10 °C and 35–45 °C for approved configurations

Processor

Socket	1 × SP5 (6096-pin LGA)
Family	5th Gen AMD EPYC 9005 only
Cores	8 to 192
Default cTDP	125 W to 500 W
PCIe	128 lanes of PCIe 5.0

Memory

Slots	24 DDR5 RDIMM · 12 channels × 2 DIMMs
DIMM kits	32, 64, 96, 128 GB · 256 GB 3DS (all DDR5-6400)
Speed	5200 MT/s (1 DPC) · 4000 or 4400 MT/s (2 DPC)
Maximum	6 TB (24 × 256 GB) · 3 TB at 1 DPC
Population	1–12 DIMMs at 1 DPC (1, 2, 4, 6, 8, 10, 12) · 16, 20 or 24 at 2 DPC

Storage

Front maximum	20 × E3.S 1T · 10 × SFF · 4 × LFF (chassis-dependent)
Controllers	MR216i-o/-p, MR408i-o/-p, MR416i-o/-p, MR932i-p · E208e-p (external)
Boot	NS204i-u v2: 480 GB, 960 GB or 960 GB SED
Optical	Optional

Expansion & networking

PCIe slots	2 × x16 (8SFF, 4LFF, SFF/EDSFF) · up to 6 × x16 (GPU)
OCP 3.0	Rear A (x16) and B (x8 or x16) · front primary and secondary on SFF/EDSFF
Embedded NIC	None

Accelerators

GPU	NVIDIA L4 24 GB — 4 at the front (GPU chassis) or 2 at the rear

Power

Family	M-CRPS, hot-plug, 73.5 mm and 60 mm widths
AC	800 W Platinum · 1000, 1500 and 2400 W Titanium
DC	1300 W and 2200 W −48 VDC

Ports & management

Front	1 × USB 3.2 Gen 1 · USB-C iLO service port · optional DisplayPort and USB 2.0 (media bay)
Rear	2 × USB 3.2 Gen 1 · VGA · 1GbE iLO · optional serial
Internal	1 × USB 3.2 Gen 1
Management	HPE iLO 7

12 — FAQ

DL325 Gen12 questions, answered from the documentation

What is the maximum memory of the HPE DL325 Gen12?

6 TB, from 24 × 256 GB 3DS RDIMMs at two DIMMs per channel on its single processor. With one DIMM per channel (12 DIMMs) the ceiling is 3 TB, and memory runs at 5200 MT/s instead of the slower two-per-channel speed.

What memory speed does the DL325 Gen12 run at?

HPE quotes 5200 MT/s with one DIMM per channel. For two per channel its QuickSpecs give two figures — 4400 MT/s in the Standard Features bullets and 4000 MT/s in the DIMM table and 6 TB capacity line — even though every kit sold is a DDR5-6400 part.

Which processors does the DL325 Gen12 support?

Only 5th Gen AMD EPYC 9005: 23 models from the 8-core EPYC 9015 to the 192-core EPYC 9965, at 125 W to 500 W default cTDP. No 4th Gen EPYC processors appear in the document.

How many drives does the DL325 Gen12 hold?

Up to 20 E3.S 1T NVMe drives or 10 SFF drives in the SFF/EDSFF chassis, which can mix the two; 10 SFF in the 8SFF chassis; 4 LFF in the 4LFF chassis; and 4 SFF or 8 E3.S in the GPU chassis.

Does the DL325 Gen12 support GPUs?

Yes — the single-width NVIDIA L4 24 GB. The GPU chassis takes four at the front, and the 8SFF, 4LFF and SFF/EDSFF chassis take up to two at the rear under per-slot ambient limits. No double-width card is currently on the option list.

What power supplies can it use?

M-CRPS units only: 800 W Platinum, 1000 W, 1500 W and 2400 W Titanium AC, plus 1300 W and 2200 W −48 V DC. At 100–127 V the 2400 W unit delivers 1200 W, and different supply types cannot be mixed.

How big and heavy is the DL325 Gen12?

The server stands 4.29 cm (1U) tall and 43.46 cm wide. The 8SFF model is 60.94 cm deep, the 4LFF and SFF/EDSFF models 66.7 cm and the GPU model 82.18 cm; HPE’s maximum weights run from 18.55 kg (8SFF) to 22.86 kg (GPU with two GPUs).

What changed from the DL325 Gen11?

Memory doubles from 12 to 24 slots (3 TB to 6 TB), processor support narrows to 5th Gen EPYC but reaches 192 cores and 500 W, management moves from iLO 6 to iLO 7, and supplies change from Flex Slot to M-CRPS. Gen12 also adds front OCP slots and front cages that mix SFF and E3.S; both generations’ QuickSpecs list direct liquid cooling kits.

Does the DL325 Gen12 support liquid cooling?

In two ways. Processors of 320 W and up use a closed-loop liquid-cooling heat sink with iLO 7 leak detection, a module HPE advises changing after five years. A direct liquid cooling cold-plate kit is also offered, but DLC systems ship only as complete 42U or 48U racks.

Is the DL325 Gen12 end of life?

HPE’s QuickSpecs, updated to version 12 in August 2026, list no end-of-sale or end-of-support date for this model, and HPE’s base warranty runs three years for parts, labour and next-business-day on-site service. Our end-of-life checker tracks HPE’s dates once published.

Sources & verification

Where these figures come from

HPE ProLiant Compute DL325 Gen12 QuickSpecs (Version 12 - 03-Aug-2026) — Overview, Standard Features processor, memory, expansion, storage, M-CRPS and security sections; Step 1 CTO table; Core Options processor cooling matrix, memory speed and thermal tables, front-cage rules, GPU, liquid-cooling and power-supply notes; Technical Specifications.
HPE ProLiant DL325 Gen11 QuickSpecs (Version 40 - 03-Aug-2026) — Used only for the Gen11 vs Gen12 comparison.
HPE product imagery (HPE DAM) — Front, rear and top-view renders s00014893, s00014894 and s00014895.

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.

Get a quote for the HPE ProLiant Compute DL325 Gen12

Tell us the workload and we’ll spec and price it — or build it in the configurator first.

Business enquiries only — please use your company email. Gmail, Hotmail and other personal addresses are not accepted.

Delivery country (optional)

We only ship hardware to the countries in the dropdown. Software and maintenance services are global.

Enquiring about: HPE ProLiant Compute DL325 Gen12

Full Name *

Email *

Company

Quantity Required

Additional Notes

Response within 4 business hours · No obligation

Quote for

HPE ProLiant Compute DL325 Gen12

0800 987 4111

The DL325 Gen12 at a glance

Strengths

Watch-outs

23 supported processors, mapped

Processor landscape — cores × TDP

Processor explorer

24 DDR5 DIMM slots

Capacity with every slot filled

Operating speed

6 drive-cage kits, up to 20 bays

Headline layouts

Controllers & boot

Every documented drive-cage kit

GPUs, PCIe and networking

NVIDIA L4 24GB PCIe Accelerator for HPE

I/O topology

Network adapters HPE lists

6 power supplies, 800–2,400 W

Run it, secure it, choose the OS

Management

Security

Operating systems

How the DL325 Gen12 compares with its family

Four builds that suit the DL325 Gen12

Memory-heavy VM host

6 TB single-socket database node

Four-L4 front-GPU node

−48 V DC edge node

When a refurbished ProLiant makes more sense

HPE ProLiant DL325 Gen10 Plus

HPE ProLiant DL385 Gen10 Plus

HPE ProLiant Compute DL325 Gen12 specifications

Chassis & cooling

Processor

Memory

Storage

Expansion & networking

Accelerators

Power

Ports & management

DL325 Gen12 questions, answered from the documentation

Where these figures come from

Buy & configure

Guides & family

Plan the deployment

Support & lifecycle

Get a quote for the HPE ProLiant Compute DL325 Gen12

Talk to a UK specialist