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Green 288-pin DDR4 DIMM with black chips and gold contacts

SK hynix

SK hynix HMAA8GR7CJR4N-XN 64GB DDR4-3200 CL22 ECC Registered server RAM

SKU CH-J8HG-NHN83

64 GB DDR4-3200 registered ECC module with dual-rank CL22 timing for server workloads

  • Capacity64GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 3200 (PC4 25600)
  • CAS LatencyCL22
  • ECCYes
  • Buffered/RegisteredRegistered
  • 64GB capacity supports dense virtualization workloads
  • DDR4-3200 speed delivers 25600 MT/s data rate
  • CL22 latency optimizes registered timing stability
  • ECC registered design corrects single-bit errors automatically
  • 2Rx4 dual-rank organization maximizes channel density

64GB DDR4-3200 ECC Registered Module

This 64GB DDR4-3200 module delivers registered ECC memory for servers and workstations that require error correction and signal buffering. The dual-rank 2Rx4 organisation increases density within a single 288-pin DIMM slot. It is built for systems qualified for PC4-25600 operation.

DDR4-3200 Speed and Registered Buffer Limit

The module runs at 3200 MT/s with a CAS latency of 22 cycles. Registered buffering adds one clock cycle of address/command delay, which stabilises heavy loads but prevents use in platforms that accept only unbuffered DIMMs. Maximum throughput is bound by the DDR4-3200 interface.

64GB Capacity per DIMM Decides Fit

A single stick provides 64GB, so the total memory ceiling depends on how many registered DIMM slots the motherboard exposes. Boards limited to lower per-slot capacities or unbuffered memory cannot use this module. Verify the platform's qualified vendor list before purchase.

Highlights

  • 64GB capacity supports dense virtualization workloads
  • DDR4-3200 speed delivers 25600 MT/s data rate
  • CL22 latency optimizes registered timing stability
  • ECC registered design corrects single-bit errors automatically
  • 2Rx4 dual-rank organization maximizes channel density

Specifications

BrandHynix
Part NumberHMAA8GR7CJR4N-XN
Capacity64GB
Type288-Pin DDR4 SDRAM
SpeedDDR4 3200 (PC4 25600)
CAS LatencyCL22
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4

Questions about this item

Should I choose the 64 GB dual-rank module or look for a single-rank alternative?

This module is a 64 GB dual-rank (2Rx4) DDR4-3200 registered DIMM; dual-rank can improve bandwidth on supported platforms but requires a motherboard that accepts registered ECC memory.

What does the DDR4-3200 CL22 rating mean for actual throughput in a server?

The module runs at 3200 MT/s with a CAS latency of 22 cycles, delivering up to 25 600 MB/s theoretical peak bandwidth when the platform operates at the rated speed.

Does the 288-pin registered DDR4 interface limit the maximum speed I can reach?

The 288-pin registered DDR4 form factor supports the rated DDR4-3200 speed; actual operating frequency is determined by the server's memory controller and BIOS configuration.

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