Samsung · Server memory
M321RBGA0B40-CWK
256 GB DDR5-4800 ECC Registered DIMM (RDIMM), 8-rank ×4.
Specifications JEDEC / manufacturer data
| Memory type | DDR5 | 8 sources |
| Module type | RDIMM · ECC Registered DIMM | 7 sources |
| Capacity | 256 GB | 8 sources |
| Speed | DDR5-4800 · PC5-38400 | 6 sources |
| Organization / rank | 8Rx4 | 5 sources |
| CAS latency | 40 | 4 sources |
| Voltage | 1.1 V | JEDEC standard for DDR5 |
| Form factor | 288-pin DIMM | standard for DDR5 RDIMM |
Fits these servers memory support by platform
Confirmed = listed in the vendor's memory documentation for that server. Spec match = this module meets the platform's JEDEC requirements (generation, form factor, validated speed); interchangeability is spec-based, not per-server testing. Confirm against your server's qualified parts list before ordering.