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Catalog/SK hynix/DDR5 RDIMM/HMCT14MHERC
SK hynix · Server memory

HMCT14MHERC

Verified

256 GB DDR5-6400 ECC Registered DIMM (RDIMM), quad-rank ×4.

independent sources How we verify →
Specifications JEDEC / manufacturer data
Memory typeDDR5datasheet + 3 more
Module typeRDIMM · ECC Registered DIMMdatasheet + 4 more
Capacity256 GBdatasheet + 4 more
SpeedDDR5-6400 · PC5-512005 sources
Organization / rank4Rx4datasheet + 3 more
CAS latency604 sources
Voltage1.1 VJEDEC standard for DDR5
Form factor288-pin DIMMstandard for DDR5 RDIMM
Fits these servers 12 of 65 platforms
ServerFit
Cisco UCS C220 M7Spec match
Cisco UCS C240 M7Spec match
Cisco UCS X210c M7 Compute NodeSpec match
Dell PowerEdge C6615Spec match
Dell PowerEdge C6620Spec match
Fujitsu PRIMERGY RX2540 M7Spec match
HPE ProLiant DL320 Gen12Spec match
HPE ProLiant DL325 Gen11Spec match
Lenovo ThinkSystem SD650 V3Spec match
Lenovo ThinkSystem SR630 V3Spec match
Supermicro BigTwin (X13, Xeon Scalable 4th/5th gen)Spec match
Supermicro GPU systems (H13, AMD EPYC 9004/9005)Spec match
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
SamsungM321RBJA0M22-CLP256 GB · DDR5-6400 · RDIMM · 4Rx4
SK hynixHMCT14MHERC571N256 GB · DDR5-6400 · RDIMM · 4Rx4
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 Samsung or SK hynix module instead?
In most servers, yes: M321RBJA0M22-CLP (Samsung), HMCT14MHERC571N (SK hynix) match this module on every key specification (256 GB, DDR5-6400, RDIMM, 4Rx4). Keep vendors consistent within a memory bank, and check your server's qualified parts list for edge cases.