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Catalog/SK hynix/DDR4 RDIMM/HMA84GR7CJR4N-XN
SK hynix · Server memory

HMA84GR7CJR4N-XN

Verified

32 GB DDR4-3200 ECC Registered DIMM (RDIMM), dual-rank ×4. Sold by HPE and Lenovo under their own part numbers, all cross-referenced below.

independent sources How we verify →
Specifications JEDEC / manufacturer data
Memory typeDDR44 sources
Module typeRDIMM · ECC Registered DIMM4 sources
Capacity32 GB4 sources
SpeedDDR4-3200 · PC4-256004 sources
Organization / rank2Rx44 sources
CAS latency224 sources
Voltage1.2 VJEDEC standard for DDR4
Form factor288-pin DIMMstandard for DDR4 RDIMM
OEM part numbers same module, OEM-branded
VendorOEM part numberVerification
HPEP07646-B21✓ verified
Lenovo4X77A08633✓ 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 27 of 111 platforms
Spec match covers every DDR4 RDIMM platform we track, so the spec-match rows above are a sample across vendors: 84 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
Kingston9965694-026.B00G32 GB · DDR4-3200 · RDIMM · 2Rx4
KingstonKSM32RD4/32HDR32 GB · DDR4-3200 · RDIMM · 2Rx4
KingstonKSM32RD4/32MEI32 GB · DDR4-3200 · RDIMM · 2Rx4
KingstonKSM32RD4/32MRR32 GB · DDR4-3200 · RDIMM · 2Rx4
MicronMTA36ASF4G72PZ-3G232 GB · DDR4-3200 · RDIMM · 2Rx4
MicronMTA36ASF4G72PZ-3G2E7TI32 GB · DDR4-3200 · RDIMM · 2Rx4
MicronMTA36ASF4G72PZ-3G2E7UI32 GB · DDR4-3200 · RDIMM · 2Rx4
MicronMTA36ASF4G72PZ-3G2E7VL32 GB · DDR4-3200 · RDIMM · 2Rx4
MicronMTA36ASF4G72PZ-3G2J3TI32 GB · DDR4-3200 · RDIMM · 2Rx4
MicronMTA36ASF4G72PZ-3G2J3UI32 GB · DDR4-3200 · RDIMM · 2Rx4
MicronMTA36ASF4G72PZ-3G2J3UL32 GB · DDR4-3200 · RDIMM · 2Rx4
MicronMTA36ASF4G72PZ-3G2R1TI32 GB · DDR4-3200 · RDIMM · 2Rx4
MicronMTA36ASF4G72PZ-3G2R1TL32 GB · DDR4-3200 · RDIMM · 2Rx4
MicronMTA36ASF4G72PZ-3G2R1UK32 GB · DDR4-3200 · RDIMM · 2Rx4
MicronMTA36ASF4G72PZ-3G2R1VI32 GB · DDR4-3200 · RDIMM · 2Rx4
SamsungM393A4K40DB3-CWE32 GB · DDR4-3200 · RDIMM · 2Rx4
SamsungM393A4K40DB3-CWECO32 GB · DDR4-3200 · RDIMM · 2Rx4
SamsungM393A4K40EB3-CWE32 GB · DDR4-3200 · RDIMM · 2Rx4
SamsungM393A4K40EB3-CWEBY32 GB · DDR4-3200 · RDIMM · 2Rx4
SamsungM393A4K40EB3-CWEC032 GB · DDR4-3200 · RDIMM · 2Rx4
SamsungM393A4K40EB3-CWECQ32 GB · DDR4-3200 · RDIMM · 2Rx4
SK hynixHMA84GR7DJR4N-XN32 GB · DDR4-3200 · RDIMM · 2Rx4
SK hynixHMAG84EXNRA084N32 GB · DDR4-3200 · RDIMM · 2Rx4
SK hynixHMAG84EXNRA086N32 GB · DDR4-3200 · RDIMM · 2Rx4
SK hynixHMAG84EXNRA199N32 GB · DDR4-3200 · 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 P07646-B21 the same module as HMA84GR7CJR4N-XN?
Yes. HPE resells this SK hynix module under part number P07646-B21; Lenovo does the same as 4X77A08633. 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: 9965694-026.B00G (Kingston), KSM32RD4/32HDR (Kingston), KSM32RD4/32MEI (Kingston) match this module on every key specification (32 GB, DDR4-3200, RDIMM, 2Rx4). Keep vendors consistent within a memory bank, and check your server's qualified parts list for edge cases.
What servers take HMA84GR7CJR4N-XN?
HPE Apollo 6500 Gen10 Plus (XL675d), HPE ProLiant DL345 Gen10 Plus, HPE ProLiant DL360 Gen10 Plus, HPE ProLiant DL365 Gen10 Plus, among others, match it through the vendor's own part cross-reference (e.g. HPE P07646-B21) with a validated speed. Other DDR4 RDIMM platforms generally accept it too; verify against the server's qualified parts list.