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Catalog/Samsung/DDR5 RDIMM/M321R8GA0BB0-CQKZJ
Samsung · Server memory

M321R8GA0BB0-CQKZJ

Verified

64 GB DDR5-4800 ECC Registered DIMM (RDIMM), dual-rank ×4. Sold by HPE under its own part numbers, all cross-referenced below.

independent sources How we verify →
Specifications JEDEC / manufacturer data
Memory typeDDR53 sources
Module typeRDIMM · ECC Registered DIMMdatasheet + 2 more
Capacity64 GB3 sources
SpeedDDR5-4800 · PC5-384003 sources
Organization / rank2Rx43 sources
CAS latency403 sources
Voltage1.1 VJEDEC standard for DDR5
Form factor288-pin DIMMstandard for DDR5 RDIMM
OEM part numbers same module, OEM-branded
VendorOEM part numberVerification
HPEP43333-0A1✓ verified
OEM cross-references are compiled from distributor cross-reference data and OEM documentation. Verify against your vendor's parts list before ordering.
Fits these servers 20 of 65 platforms
Spec match covers every DDR5 RDIMM platform we track, so the spec-match rows above are a sample across vendors: 45 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
KingstonKSM48R40BD4-64MD64 GB · DDR5-4800 · RDIMM · 2Rx4
KingstonKSM48R40BD4TMM-64HMR64 GB · DDR5-4800 · RDIMM · 2Rx4
MicronMTC40F2046S1RC48B64 GB · DDR5-4800 · RDIMM · 2Rx4
MicronMTC40F2046S1RC48BA164 GB · DDR5-4800 · RDIMM · 2Rx4
MicronMTC40F2046S1RC48BA1R64 GB · DDR5-4800 · RDIMM · 2Rx4
MicronMTC40F2046S1RC48BR64 GB · DDR5-4800 · RDIMM · 2Rx4
SamsungM321R8GA0BB0-CQK64 GB · DDR5-4800 · RDIMM · 2Rx4
SamsungM329R8GA0BB0-CQK64 GB · DDR5-4800 · RDIMM · 2Rx4
SK hynixHMCG94AEBRA64 GB · DDR5-4800 · RDIMM · 2Rx4
SK hynixHMCG94AEBRA109N64 GB · DDR5-4800 · RDIMM · 2Rx4
SK hynixHMCG94AEBRA123N64 GB · DDR5-4800 · RDIMM · 2Rx4
SK hynixHMCG94MEBQA64 GB · DDR5-4800 · RDIMM · 2Rx4
SK hynixHMCG94MEBRA64 GB · DDR5-4800 · RDIMM · 2Rx4
SK hynixHMCG94MEBRA109N64 GB · DDR5-4800 · RDIMM · 2Rx4
SK hynixHMCG94MEBRA123N64 GB · DDR5-4800 · RDIMM · 2Rx4
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
Is HPE P43333-0A1 the same module as M321R8GA0BB0-CQKZJ?
Yes. HPE resells this Samsung module under part number P43333-0A1. The physical module is identical: OEM part numbers are branding, not different hardware.
Can I use a Kingston or Micron module instead?
In most servers, yes: KSM48R40BD4-64MD (Kingston), KSM48R40BD4TMM-64HMR (Kingston), MTC40F2046S1RC48B (Micron) match this module on every key specification (64 GB, DDR5-4800, RDIMM, 2Rx4). Keep vendors consistent within a memory bank, and check your server's qualified parts list for edge cases.
What servers take M321R8GA0BB0-CQKZJ?
HPE ProLiant DL325 Gen11, HPE ProLiant DL345 Gen11, HPE ProLiant DL360 Gen11, HPE ProLiant DL380 Gen11, among others, match it through the vendor's own part cross-reference (e.g. HPE P43333-0A1) with a validated speed. Other DDR5 RDIMM platforms generally accept it too; verify against the server's qualified parts list.