HPE ML350 Gen11 vs HPE ML350 Gen12
A specification-by-specification comparison of the HPE ProLiant ML350 Gen11 and the HPE ProLiant Compute ML350 Gen12, built from HPE’s own documents. None of the headline measures favour the ML350 Gen11; 2 favour the ML350 Gen12, and they share no processors.
Bottom line. ML350 Gen12 leads on virtualisation, network throughput. Neither vendor publishes benchmarks for these machines, so every call here is made on what their documents state.


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.
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 ML350 Gen11 if…
- Two ways to start: the LFF chassis mixes 4LFF and 8SFF boxes up to three, while the SFF chassis stacks 8SFF boxes or swaps to one factory-fitted x4 NVMe or 12-bay E3.S cage.
Choose the ML350 Gen12 if…
- Cores, fully populated: 172 against 128 on the ML350 Gen11
- Fastest network option: 400 GbE class against 100 GbE class on the ML350 Gen11
- Up to 86 P-cores per socket, 172 per server, with 88 PCIe 5.0 lanes per processor and UPI running at 24 GT/s.
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.
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 | ML350 Gen11 | ML350 Gen12 |
|---|---|---|
| Processors listed | 57 | 18 |
| Most cores per processor | 64 | 86 |
| Processor families | 4th Gen Xeon Scalable · 5th Gen Xeon Scalable | Xeon 6 P-core |
Memory
| Specification | ML350 Gen11 | ML350 Gen12 |
|---|---|---|
| Largest module listed | 128 GB | 256 GB |
| Fastest rated speed | 5,600 MT/s | 6,400 MT/s |
| Memory types | RDIMM DDR5-4800 · RDIMM DDR5-5600 | RDIMM DDR5-6400 |
Storage
Bay counts are the maximum each document states, including rear and mid-chassis positions.
| Specification | ML350 Gen11 | ML350 Gen12 |
|---|---|---|
| Boot devices | HPE NS204i-u Gen11 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 + 1 more | 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 + 2 more |
Accelerators & I/O
| Specification | ML350 Gen11 | ML350 Gen12 |
|---|---|---|
| Network cards listed | 29 | 26 |
Power & platform
| Specification | ML350 Gen11 | ML350 Gen12 |
|---|---|---|
| Power-supply options | 6 | 5 |
| Output range | 500–2,200 W | 800–2,200 W |
| Input types | AC · 277 VAC / HVDC | AC · −48 V DC |
| Management | HPE iLO 6 | HPE iLO 7 |
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.
ML350 Gen11: processors by cores and TDP
ML350 Gen12: processors by cores and TDP
ML350 Gen11: memory with every slot filled
ML350 Gen12: memory with every slot filled
ML350 Gen11: drive bays
Front panel
12 × EDSFF NVMe at the front — 12 bays in total.
ML350 Gen12: drive bays
Front panel
12 × EDSFF NVMe at the front — 12 bays in total.
ML350 Gen11: power supplies
ML350 Gen12: power supplies
ML350 Gen11 vs ML350 Gen12, answered
Is the ML350 Gen11 or the ML350 Gen12 the faster server?
Neither document publishes benchmark results, so this page compares what they do state. The ML350 Gen11 lists 57 processors up to 64 cores at 350 W; the ML350 Gen12 lists 18 up to 86 cores at 350 W. Fully populated that is 128 cores against 172.
Which holds more memory?
The ML350 Gen11 has 32 DIMM slots and a stated ceiling of 8.0 TB. The ML350 Gen12 has 32 and 8.0 TB.
Which takes more drives?
ML350 Gen11: 24 bays across 4 documented layouts. ML350 Gen12: 24 across 4. Counts include rear and mid-chassis positions where the vendor documents them.
Can either take GPUs?
ML350 Gen11: up to 8 accelerators, 0 double-wide cards listed. ML350 Gen12: up to 8, 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. ML350 Gen11: HPE ProLiant ML350 Gen11 QuickSpecs (Version 47 - 08-Sep-2026) (HPE document). ML350 Gen12: HPE ProLiant Compute ML350 Gen12 QuickSpecs (Version 17 - 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.
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