HPE ProLiant DL380 G5 Memory
Genuine HPE Fully Buffered memory for the HPE ProLiant DL380 G5, new and refurbished. The server carries eight sockets for PC2-5300 Fully Buffered DIMMs (DDR2-667) arranged as four banks of two, and every bank fills as a matched pair — which is why the kits listed here are two DIMMs, not one.
DL380 G5 Memory Specifications
- Type: PC2-5300 Fully Buffered DIMMs (DDR2-667), with 4:1 and 2:1 interleaving available; interleaving requires identical DIMMs
- Sockets: eight, in four banks — DIMMs 1A and 3A must match, and 5B with 7B, 2C with 4C and 6D with 8D must match and install as a pair
- Maximum: 64GB as eight 8GB dual-rank modules, which means removing the memory the server shipped with
- Speed: DIMMs run at 667MHz behind a 1333MHz front side bus, and at 533MHz behind a 1066MHz or 667MHz bus
- Kits listed: 1GB through 16GB two-DIMM kits, in single-rank, dual-rank and low power forms, plus a 64GB kit of eight 8GB dual-rank modules
- Protection: Advanced ECC multi-bit error protection as standard, with Online Spare and Mirrored Memory selectable in RBSU
This server fills in pairs, and the pairs are fixed. DIMMs 1A and 3A must match, and 5B with 7B, 2C with 4C and 6D with 8D each install as a matched pair. That is why every option kit listed here contains two modules, and why a single DIMM cannot complete a bank on its own.
How far will eight sockets take you?
| Configuration | Total | How the sockets fill |
|---|---|---|
| As shipped, Base models | 2GB | 1GB in sockets 1 and 3, the other six empty |
| Factory pair kept, options added | 50GB | the original 1GB pair, plus 8GB in the remaining six |
| Factory pair removed | 64GB | 8GB in all eight sockets |
The last 14GB is the expensive one. Going from 50GB to 64GB means pulling two perfectly good 1GB DIMMs and replacing them with 8GB modules, so the upgrade is two extra modules and two spare ones left over. Decide which of those two configurations you are buying before you count kits.
Choosing the Right DL380 G5 Memory
- Buy in pairs, because the banks fill in pairs. Every option kit listed for this server is two DIMMs, and a single module cannot complete a bank on its own.
- Keep a bank identical. Interleaving requires identical DIMMs, so mixing two kit sizes inside one bank costs you the interleaving the server would otherwise configure automatically.
- Check the processor before paying for speed. The memory clock follows the front side bus, and a 1066MHz bus holds DDR2 at 533MHz whatever the modules are rated for.
- Online Spare and Mirrored Memory both cost capacity. Mirroring needs banks A and B fully populated with identical part numbers; Online Spare reserves the last populated bank.
- Low power kits exist at 2GB, 4GB and 8GB. Fully Buffered DIMMs run warm, and on a full eight-socket build the low power parts are worth asking for by part number.
Complete Your DL380 G5 Build
The front side bus sets the memory clock, so check the DL380 G5 processors before deciding what speed you are buying. For the rest of the server, browse DL380 G5 hard drives, storage controllers, networking adapters and power supplies, or start from the full DL380 G5 parts listing. Background reading: understanding memory rank in HPE servers and the server memory upgrade checklist. Other models are listed under HPE parts by server model.
DL380 G5 Memory FAQ
What is the maximum memory in a DL380 G5?
64GB, as eight 8GB PC2-5300 Fully Buffered DIMMs. That figure assumes the memory the server shipped with has been removed; leaving the factory 1GB pair in place caps the machine at 50GB.
What type of memory does the DL380 G5 use?
PC2-5300 Fully Buffered DIMMs, also written FBDIMM, at DDR2-667. Fully Buffered modules are not interchangeable with the registered or unbuffered DDR2 used by other servers of the period.
How many memory slots does a DL380 G5 have?
Eight, arranged as four banks of two. Both sockets in a bank take matching modules, so the server fills in pairs rather than one DIMM at a time.
Why does my DL380 G5 memory run at 533MHz?
Because of the front side bus rather than the modules. DIMMs run at 667MHz in a server whose FSB is 1333MHz, and at 533MHz where the FSB is 1066MHz or 667MHz.
Do HPE memory kits for this server contain one DIMM or two?
Two, in every kit listed here except the 64GB kit, which contains eight. A 16GB kit is two 8GB modules, so filling all eight sockets with 8GB parts takes four of those kits or one 64GB kit.
Can I mix different memory kit sizes in a DL380 G5?
Across banks yes, inside a bank no. The two sockets in a bank must match, and interleaving is only configured automatically when the populated DIMMs are identical.
✅ Looking for a specific DL380 G5 memory module? Browse our full selection below.
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