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Catalog/Samsung/DDR4 RDIMM/M393A2K40BB2-CTD6Y
Samsung · Server memory

M393A2K40BB2-CTD6Y

Verified

16 GB DDR4-2666 ECC Registered DIMM (RDIMM), single-rank ×4.

independent sources How we verify →
Specifications JEDEC / manufacturer data
Memory typeDDR44 sources
Module typeRDIMM · ECC Registered DIMM4 sources
Capacity16 GB4 sources
SpeedDDR4-2666 · PC4-213284 sources
Organization / rank1Rx44 sources
CAS latency194 sources
Voltage1.2 VJEDEC standard for DDR4
Form factor288-pin DIMMstandard for DDR4 RDIMM
Fits these servers 12 of 111 platforms
Spec match covers every DDR4 RDIMM platform we track, so the spec-match rows above are a sample across vendors: 99 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
Kingston9965589-008.E00G16 GB · DDR4-2666 · RDIMM · 1Rx4
MicronMTA18ASF2G72PZ-2G616 GB · DDR4-2666 · RDIMM · 1Rx4
SamsungM393A2K40BB2-CTD16 GB · DDR4-2666 · RDIMM · 1Rx4
SamsungM393A2K40CB2-CTD16 GB · DDR4-2666 · RDIMM · 1Rx4
SK hynixHMA82GR7AFR4N-VK16 GB · DDR4-2666 · RDIMM · 1Rx4
SK hynixHMA82GR7CJR4N-VK16 GB · DDR4-2666 · 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 Micron module instead?
In most servers, yes: 9965589-008.E00G (Kingston), MTA18ASF2G72PZ-2G6 (Micron), M393A2K40BB2-CTD (Samsung) match this module on every key specification (16 GB, DDR4-2666, RDIMM, 1Rx4). Keep vendors consistent within a memory bank, and check your server's qualified parts list for edge cases.