HPE Gen9 Server Memory
Every HPE ProLiant Gen9 server takes HPE DDR4 memory, and the kit depends on the processor: Intel Xeon E5-2600 v4 processors use DDR4-2400 kits, E5-2600 v3 processors use DDR4-2133 kits. Registered DIMMs run from 4GB to 32GB and load-reduced DIMMs from 32GB to 128GB. Gen8 DDR3 memory does not fit, and HPE does not support mixing 2133 and 2400 DIMMs in one server.
- 13 Gen9 models, one memory page each
- DDR4 RDIMM 4GB to 32GB, LRDIMM 32GB to 128GB
- Up to 3TB in the DL360, DL380 and ML350 Gen9
- 4 channels per processor
Specifications match each model’s HPE ProLiant QuickSpecs; the model pages confirm every figure.
How processor, population and speed fit together
Each processor has 4 memory channels with up to 3 slots per channel. The kit rating is the ceiling; the processor model, the DIMM type and how many DIMMs share a channel set the speed you actually get.
| Processor | Kit to buy | One or two DIMMs per channel | Three DIMMs per channel |
|---|---|---|---|
| E5-2600 v4 (E5-2620 v4, 2650 v4, 2680 v4 and others) | DDR4-2400 | Up to 2400 MT/s, by processor model (single-rank 8GB and 16GB RDIMMs: 2133 MT/s with two per channel) | RDIMMs 1866 MT/s; LRDIMMs 2400 MT/s |
| E5-2600 v3 (E5-2620 v3, 2650 v3, 2680 v3 and others) | DDR4-2133 | Up to 2133 MT/s, by processor model | 1600 MT/s (64GB LRDIMM and the DDR4-2400 16GB kit: 1866) |
HPE: depending on the processor selected, DDR4-2400 memory runs at 1866, 2133 or 2400 MT/s. Lower-tier models in each family are rated below the kit speed. The BL460c and DL180 Gen9 have two slots per channel and the DL60 Gen9 one, so the three-DIMM column does not apply to them.
Gen9 or Gen8? How to tell
Gen9 moved to DDR4; Gen8 is DDR3. The processor model tells them apart at a glance.
| Gen9 | Gen8 | |
|---|---|---|
| Memory | DDR4-2133 (v3) or DDR4-2400 (v4) RDIMM and LRDIMM | DDR3-1333 to DDR3-1866 RDIMM, LRDIMM and UDIMM (PC3 / PC3L kits) |
| Processors | Intel Xeon E5-2600 v3 and v4 (E5-2620 v3, E5-2650 v4) | Intel Xeon E5-2600 and E5-2600 v2 (E5-2620, E5-2650 v2) |
| Kit part numbers look like | 726719-B21, 805349-B21, 836220-B21 | 647899-B21, 708641-B21, 713985-B21 |
Gen8 kits have their own page: HPE Gen8 Server Memory.
Read the processor model. E5-2600 v3 processors end in v3 (E5-2620 v3, E5-2650 v3, E5-2680 v3); v4 processors end in v4 (E5-2620 v4, E5-2650 v4, E5-2680 v4). No suffix or v2 means a Gen8 server.
Where to find the processor model: iLO › Information › System Information › Processors. On Windows, Task Manager › Performance › CPU. On Linux, lscpu | grep "Model name".
Adding to memory that is already installed? Read the HPE part number on the DIMM label and buy that number. It cannot be wrong.
Rules that hold for every Gen9 server
1 Never mix 2133 and 2400 DIMMs
Buy the family HPE lists for your processor. If the server already has memory installed, add the same part number; HPE does not support mixing the two speeds in one server.
2 RDIMM or LRDIMM, never both
Registered and load-reduced DIMMs cannot share a server, and the NVDIMM cannot be used with LRDIMMs. Keep every DIMM in a bank the same capacity and rank, and populate both processors identically.
3 Fill channels in the printed order
Four matching DIMMs per processor fill every channel once and give full bandwidth; the second and third slots per channel add capacity at a lower speed. Follow the slot order printed on the system board.
HPE Gen9 memory questions
How much memory can an HPE Gen9 server hold?
It depends on the model: 3TB in the DL360, DL380 and ML350 Gen9 (24 slots, v4 processors with 128GB LRDIMMs), 2TB in the BL460c Gen9 (16 slots), 1TB in the DL180 Gen9 (16 slots) and 256GB in the DL60 Gen9 (8 slots). With registered DIMMs the maxima are lower; the model pages spell them out.
What type of memory do HPE Gen9 servers use?
HPE DDR4 registered and load-reduced DIMMs. E5-2600 v3 processors take the DDR4-2133 kits; E5-2600 v4 processors take the DDR4-2400 kits. Registered DIMMs run from 4GB to 32GB; load-reduced DIMMs from 32GB to 128GB.
Can I use DDR4-2133 memory with a v4 processor?
Buy the family HPE lists for your processor, and never mix 2133 and 2400 DIMMs in one server. If the server already has memory installed, add the same part number.
What speed will the memory run at?
Up to the kit rating with one or two DIMMs per channel, depending on the processor model. With three DIMMs per channel, registered DIMMs run at 1866 MT/s on v4 processors (1600 on v3) and load-reduced DIMMs at 2400 MT/s.
What about the NVDIMM?
The 8GB NVDIMM is supported only on factory-configured servers with E5-2600 v4 processors, up to 16 per server, and cannot be used with LRDIMMs. Check HPE’s NVDIMM population rules before adding one to an existing server.
Is this genuine HPE memory, and what is the warranty?
Yes. Every kit is a genuine HPE part, tested or factory sealed, and covered by our 5-year memory warranty. Most orders ship the same business day.
All HPE Gen9 Server Memory kits
| Part number | Capacity | Type | Speed | Price | Availability | Add to cart |
|---|---|---|---|---|---|---|
 805351-B21805351-B21 HPE 32GB (1 x 32GB) Dual Rank x4 DDR4-2400 CAS-17-17-17 Registered Memory Kit |
$396.00 | In stock | ||||
 805358-B21805358-B21 HPE 64GB (1 x 64GB) Quad Rank x4 DDR4-2400 CAS-17-17-17 Load Reduced Memory Kit |
$575.00 | In stock | ||||
 728629-B21728629-B21 HPE 32GB (1 x 32GB) Dual Rank x4 DDR4-2133 CAS-15-15-15 Registered Memory Kit |
$266.00 | In stock | ||||
 805349-B21805349-B21 HPE 16GB (1 x 16GB) Single Rank x4 DDR4-2400 CAS-17-17-17 Registered Memory Kit |
$198.00 | In stock | ||||
 726719-B21726719-B21 HPE 16GB (1 x 16GB) Dual Rank x4 DDR4-2133 CAS-15-15-15 Registered Memory Kit |
$159.00 | In stock | ||||
 836220-B21836220-B21 HPE 16GB (1 x 16GB) Dual Rank x4 DDR4-2400 CAS-17-17-17 Registered Memory Kit |
$228.00 | In stock | ||||
 726720-B21726720-B21 HPE 16GB (1 x 16GB) Dual Rank x4 DDR4-2133 CAS-15-15-15 Load Reduced Memory Kit |
$176.00 | In stock | ||||
 726718-B21726718-B21 HPE 8GB (1 x 8GB) Single Rank x4 DDR4-2133 CAS-15-15-15 Registered Memory Kit |
$166.00 | In stock | ||||
 726722-B21726722-B21 HPE 32GB (1 x 32GB) Quad Rank x4 DDR4-2133 CAS-15-15-15 Load Reduced Memory Kit |
$326.00 | In stock | ||||
 726724-B21726724-B21 HPE 64GB (1 x 64GB) Quad Rank x4 DDR4-2133 CAS-15-15-15 Load Reduced Memory Kit - Refurbished |
$576.00 | In stock | ||||
 805347-B21805347-B21 HPE 8GB (1 x 8GB) Single Rank x8 DDR4-2400 CAS-17-17-17 Registered Memory Kit |
$135.00 | In stock | ||||
 726717-B21726717-B21 HPE 4GB (1 x 4GB) Single Rank x8 DDR4-2133 CAS-15-15-15 Registered Memory Kit |
$89.00 | In stock | ||||
 759934-B21759934-B21 HPE 8GB (1 x 8GB) Dual Rank x8 DDR4-2133 CAS-15-15-15 Registered Memory Kit |
$118.00 | In stock | ||||
 805353-B21805353-B21 HPE 32GB (1 x 32GB) Dual Rank x4 DDR4-2400 CAS-17-17-17 Load Reduced Memory Kit |
$269.00 | In stock | ||||
 P00423-B21P00423-B21 HPE 16GB (1 x 16GB) Dual-Rank x8 DDR4-2400 CAS-17-17-17 Registered Smart Memory Kit |
$295.00 | In stock | ||||
 782692-B21782692-B21 HPE 8GB NVDIMM Single Rank x4 DDR4-2133 Module |
$136.00 | In stock | ||||
 809208-B21809208-B21 HPE 128GB (1x128GB) Octal Rank x4 DDR4-2400 CAS-20-18-18 Load Reduced Memory Kit |
$1,039.00 | In stock |
Prices shown are today's store prices. Volume pricing is available on every kit; ask for a quote for ten or more.
Buying for several servers, or a different model?
Send us the server models and the memory you want in each and we will quote every kit by the next business day. Live chat is the fastest way to reach us.
