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Catalog/Samsung/DDR5 RDIMM/M321R4GA0BB0-CQK
Samsung · Server memory

M321R4GA0BB0-CQK

Verified

32 GB DDR5-4800 ECC Registered DIMM (RDIMM), single-rank ×4.

independent sources How we verify →
Specifications JEDEC / manufacturer data
Memory typeDDR53 sources
Module typeRDIMM · ECC Registered DIMM3 sources
Capacity32 GB3 sources
SpeedDDR5-4800 · PC5-384003 sources
Organization / rank1Rx4catalog
CAS latency40datasheet + 5 more
Voltage1.1 VJEDEC standard for DDR5
Form factor288-pin DIMMstandard for DDR5 RDIMM
Fits these servers 12 of 65 platforms
Spec match covers every DDR5 RDIMM platform we track, so the spec-match rows above are a sample across vendors: 53 further platforms also match this module on spec. A server missing from this table is not a compatibility limit. Browse all servers →
Confirmed = listed in the vendor's memory documentation for that server. Vendor match = the vendor's own part cross-reference matches this module and its speed is validated for the platform; the module is not taken from that server's memory list. 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.
Compatible alternatives any brand · same JEDEC specification
ManufacturerPart numberSpec
KingstonKSM48R40BS4TMM-32HMR32 GB · DDR5-4800 · RDIMM · 1Rx4
SamsungM329R4GA0BB0-CQK32 GB · DDR5-4800 · RDIMM · 1Rx4
SK hynixHMCG84AEBRA32 GB · DDR5-4800 · RDIMM · 1Rx4
SK hynixHMCG84MEBRA32 GB · DDR5-4800 · RDIMM · 1Rx4
Modules match on all key specifications (type, form factor, capacity, speed, rank organization) and are generally interchangeable in servers that accept this spec. Interchangeability is based on matching JEDEC specifications, not per-server testing. Confirm against your server vendor's qualified parts list. View the full family →
Frequently asked
Can I use a Kingston or Samsung module instead?
In most servers, yes: KSM48R40BS4TMM-32HMR (Kingston), M329R4GA0BB0-CQK (Samsung), HMCG84AEBRA (SK hynix) match this module on every key specification (32 GB, DDR5-4800, RDIMM, 1Rx4). Keep vendors consistent within a memory bank, and check your server's qualified parts list for edge cases.