HPE ProLiant XL730f Gen9 Memory
Genuine HPE SmartMemory for the HPE ProLiant XL730f Gen9, new and refurbished. Each server in the tray carries sixteen DDR4 Registered slots, thirty-two across the tray, and one Apollo rule outranks everything else here: these DIMMs carry heat spreaders fitted directly to the module, and HPE states they should not be used in any other server.
XL730f Gen9 Memory Specifications
- Type: HPE SmartMemory DDR4 Registered (RDIMM) only, with heat spreaders installed directly on the DIMM as the Apollo system requires
- Slots: sixteen per server, thirty-two per tray — four channels per socket, two DIMMs per channel, eight DIMMs for each processor installed
- Kits listed here: 8GB single rank x4 and 16GB dual rank x4, both PC4-17000P (DDR4-2133), each option kit a single DIMM
- Maximum per server: HPE's Standard Features give 512GB on sixteen 32GB modules; the DDR4 population guidelines in the same document describe 256GB on sixteen 16GB modules
- Speed: the E5-2600 v4 processors support DDR4 up to 2400MHz, though HPE notes installed memory may run at 2133MHz or 1866MHz
- Protection modes: Advanced ECC multi-bit error protection, Online Spare, Lock Step and Mirroring
These DIMMs are not interchangeable with any other Gen9 server. HPE states that the Apollo system requires heat spreaders installed directly on the DIMM, that these modules are specifically for the ProLiant XL730f Gen9, and that they should not be used in any other server. Memory from previous generation servers is not qualified here either, so check the module before you check the capacity.
How Far Do These Kits Take One Server?
| Kit | Rank and rated speed | Sixteen slots filled | On this page |
|---|---|---|---|
| 8GB 778267-B21 | Single rank x4, PC4-17000P | 128GB | Listed, with live pricing |
| 16GB 778268-B21 | Dual rank x4, PC4-17000P | 256GB | Listed, with live pricing |
| 32GB 805351-B21 | Dual rank x4, DDR4-2400 | 512GB | Documented by HPE, not stocked |
The 16GB kit reaches the 256GB per server the Overview quotes, and it gets there by filling every slot: sixteen kits for one server, thirty-two for a tray, since each HPE option kit is a single DIMM. The 512GB figure needs the 32GB module, which is not a part we list.
Choosing the Right XL730f Gen9 Memory
- A heat spreader DIMM is not a generic Gen9 RDIMM. HPE states these modules are specifically for the ProLiant XL730f Gen9 and should not be used in any other server, and the rule runs both ways: a standard DDR4 RDIMM out of a rack server is not a substitute here.
- Older SmartMemory does not carry over. HPE memory from previous generation servers is not qualified on this server.
- Buy in multiples of four. HPE sets a minimum of four kits per server tray and a maximum of thirty-two, chosen in multiples of four.
- Populate to the processors you have. Fit DIMMs only where the matching processor is installed, and put the heaviest load in a channel furthest from the processor.
- Mixing is allowed but it costs you. RDIMMs at 1.35V and 1.5V may be mixed, though the system then powers them all at the higher voltage, and mixed speeds resolve to one common optimal speed.
Complete Your XL730f Gen9 Build
Memory clock is set by the processor — see the XL730f Gen9 processors reference. Background reading: understanding memory rank in HPE servers and the importance of memory speed. Also on this platform: XL730f Gen9 drives and the full XL730f Gen9 parts listing, with other tray servers under HPE ProLiant XL230a Gen9 and every model at HPE parts by server model.
XL730f Gen9 Memory FAQ
What memory does the XL730f Gen9 use?
HPE SmartMemory DDR4 Registered DIMMs with heat spreaders fitted directly to the module. There are sixteen slots per server and thirty-two per tray, four channels per socket with two DIMMs per channel.
Can I use DDR4 memory from another Gen9 server?
No. HPE states that the Apollo system requires heat spreaders on the DIMMs for the XL730f Gen9, that those DIMMs are specifically for this server, and that they should not be used in any other server. Memory from previous generation servers is not qualified either.
What is the maximum memory in an XL730f Gen9?
The document gives two answers. Standard Features and Core Options both list 512GB per server on sixteen 32GB modules, while the DDR4 population guidelines and the Overview describe 256GB per server on sixteen 16GB modules.
How many memory kits do I need to order?
A minimum of four kits per server tray and a maximum of thirty-two, in multiples of four. Each HPE option kit is a single DIMM, so filling one server's sixteen slots takes sixteen kits.
Why does the memory run at 2133MHz rather than 2400MHz?
The achieved speed is a function of memory type, configuration and processor model. HPE notes that memory in this tray may run at 2133MHz or 1866MHz, and the two kits listed here are rated PC4-17000P, which is DDR4-2133.
Does a second processor change how many slots I can use?
Yes. If only one processor is installed in a two processor server, only half of the sixteen DIMM slots are available. DIMMs should be installed only where the corresponding processor is fitted.
✅ Looking for a specific XL730f Gen9 memory module? Browse our full selection below.
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