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Green printed circuit board with black memory chips in a 288-pin DIMM form factor

SK hynix

SK hynix HMA42GR7MFR4N-TF 64GB 2Rx4 DDR4-3200 Registered server RAM

SKU CH-8DNK-V7RKR MPN HMA42GR7MFR4N-TF

64 GB registered DDR4-3200 module with 2Rx4 organisation, CL22 latency and 1.2 V operation

  • Capacity64GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 3200 (PC4 25600)
  • CAS LatencyCL22
  • ECCNo
  • Buffered/RegisteredRegistered
  • 64 GB capacity supports large server workloads
  • Registered design improves signal integrity for stability
  • DDR4-3200 speed delivers 25600 MT/s bandwidth
  • 2Rx4 organisation optimises density per module
  • CL22 latency balances timing with throughput

Capacity and form factor

This is a single 64GB DDR4 registered DIMM built for server platforms that require registered memory. The 288-pin module operates at 1.2V and uses a 2Rx4 organisation to deliver high density per slot.

Upgrade path from lower-density modules

It replaces smaller registered DIMMs when a system needs more capacity per channel without adding slots. The jump is worthwhile when the platform supports 64GB modules and the workload benefits from fewer ranks per channel.

Sustained operation characteristics

Registered buffering reduces electrical load on the memory controller during continuous data movement. CL22 latency and DDR4-3200 bandwidth remain stable under prolonged server workloads because the module lacks a heat spreader and relies on chassis airflow for thermal management.

Points forts

  • 64 GB capacity supports large server workloads
  • Registered design improves signal integrity for stability
  • DDR4-3200 speed delivers 25600 MT/s bandwidth
  • 2Rx4 organisation optimises density per module
  • CL22 latency balances timing with throughput

Caractéristiques

BrandHynix
SeriesServer Memory
ModelHMAA8GR7AJR4N-XN
Capacity64GB
Type288-Pin DDR4 SDRAM
SpeedDDR4 3200 (PC4 25600)
CAS LatencyCL22
ECCNo
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo

Questions sur cet article

Will the 288-pin DIMM fit my server's DDR4 registered memory slots?

Yes, this is a 288-pin DDR4 DIMM built to the standard registered form factor for server platforms that accept PC4-25600 modules.

Do I need to populate specific slots first when installing this 2Rx4 registered module?

Install the module in the slot sequence your motherboard manual lists for registered DIMMs; the common mistake is ignoring the required population order for 2Rx4 ranks.

How do I know when this 64GB registered DIMM should be replaced?

Replace it if memory diagnostics report uncorrectable errors or if the system fails to recognise the full 64GB capacity at DDR4-3200 speed.

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