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Green rectangular 288-pin DDR5 DIMM with black chips and silver heat spreader, labelled 64GB ECC Registered Dual Rank

SK hynix

SK hynix HMCG94MEBRA123N 64GB DDR5-4800 ECC Reg Dual Rank Server RAM

SKU CH-S0R4-40PS8

64 GB DDR5-4800 ECC registered dual-rank server memory module with CL40 latency

  • Capacity64GB
  • Type288-Pin DDR5 SDRAM
  • SpeedDDR4 4800 (PC4-38400)
  • CAS LatencyCL40
  • ECCYes
  • Buffered/RegisteredRegistered
  • 64 GB capacity supports large server workloads
  • DDR5-4800 speed delivers high data throughput
  • ECC registered design corrects errors for reliability
  • Dual rank 2Rx2 organisation increases memory density
  • 288-pin DDR5 form factor fits standard server slots

Server DDR5-4800 ECC Registered Module

The SK hynix HMCG94MEBRA123N is a 64GB DDR5-4800 ECC registered DIMM built for servers and workstations. It uses a 288-pin form factor with a dual-rank 2Rx2 organisation and operates at CL40 latency. Registered buffering and on-die ECC protect data integrity in multi-module configurations.

Upgrade from DDR4 or single-rank DDR5

This module replaces slower DDR4 memory or lower-capacity single-rank DDR5 sticks when bandwidth and density must scale together. The jump is worth it when workloads exceed the throughput or error-correction limits of unbuffered memory and the platform supports registered DDR5 at 4800 MT/s.

Fits registered DDR5 platforms with 288-pin slots

Installation requires a motherboard wired for registered DDR5 DIMMs and a memory controller that accepts dual-rank modules at the rated speed. The registered design reduces electrical load on the bus, freeing headroom for additional modules in high-slot-count server boards.

Points forts

  • 64 GB capacity supports large server workloads
  • DDR5-4800 speed delivers high data throughput
  • ECC registered design corrects errors for reliability
  • Dual rank 2Rx2 organisation increases memory density
  • 288-pin DDR5 form factor fits standard server slots

Caractéristiques

BrandHynix
Capacity64GB
Type288-Pin DDR5 SDRAM
SpeedDDR4 4800 (PC4-38400)
CAS LatencyCL40
ECCYes
Buffered/RegisteredRegistered
Rank2Rx2

Questions sur cet article

Will the 288-pin DDR5 module fit my server's DIMM slots?

The stick uses the standard 288-pin DDR5 form factor, so it fits any server board with DDR5 RDIMM slots; verify your platform supports registered ECC memory before purchasing.

What is the correct way to seat this registered ECC DIMM, and what step do installers often miss?

Align the notch with the slot key, press straight down until both retention clips click, then confirm the module is fully latched; the step most often missed is not pressing hard enough to engage both clips.

When will this 64 GB dual-rank module need replacement?

DDR5 registered ECC DIMMs have no scheduled replacement interval; replace only if memory diagnostics report uncorrectable errors or the server fails to POST with the module installed.

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