SK hynix HMCG94AGBRA — 64 GB DDR5-5600 ECC registered DIMM (RDIMM), 2Rx4, 16 Gb A-die, 1.1 V, CL46, for Intel Xeon 6 and AMD EPYC server platforms.
SK hynix
HMCG94AGBRA
HMCG94AGBRA184N
64 GB
DDR5-5600 (PC5-44800)
288-pin ECC RDIMM (registered)
2Rx4
16 Gb A-die
44.8 GB/s per module
1.1 V (VDD/VDDQ/VPP)
CL46 (46-45-45)
On-die ECC + side-band ECC
PMIC, ODECC, ECS, thermal sensor
0°C to 85°C TC
JEDEC DDR5 / RoHS
SK hynix DDR5-5600 RDIMMs are validated on the current server generations: Intel Xeon 6 (Granite Rapids / Sierra Forest, Socket E2) and AMD EPYC 9004/9005 (Socket SP5). In 8-channel Xeon 6 platforms a 12-module set of these DIMMs is the standard population for GPU-attached inference servers.
When ordering, quote the full SK hynix ordering part number (e.g. HMCG94AGBRA184N) rather than the short module code: the suffix encodes die revision and module build, and mixing revisions on one memory channel is not supported.
64 GB DDR5-5600 RDIMMs are used to populate AI inference hosts, virtualisation clusters and in-memory databases where capacity per slot drives total cost. 2Rx4 16 Gb A-die modules keep rank loading low, so 12-DIMM population at DDR5-5600 stays within the platform timing budget.
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