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Green rectangular DDR4 RDIMM module with gold edge connectors and black memory chips on both sides

SK hynix

SK hynix HMAA8GR7CJR4N-XN 64GB DDR4 3200 CL22 ECC Registered 288-pin RDIMM server RAM

SKU CH-E3QW-D9C85

64 GB DDR4 RDIMM running at 3200 MHz with CL22 latency, ECC and registered signalling for server stability

  • Total capacity64 GB
  • Product type288-Pin DDR4 SDRAM
  • 64 GB capacity supports large datasets and virtualisation workloads
  • 3200 MHz DDR4 speed delivers high memory bandwidth for servers
  • CL22 latency keeps response times tight under load
  • ECC registered design detects and corrects single-bit errors automatically
  • 2 V operation reduces power draw in dense configurations

64GB DDR4 RDIMM for servers

This 64GB DDR4 registered DIMM targets IT professionals upgrading enterprise servers and workstations. The single-module design suits dense memory configurations where ECC protection and registered signalling are mandatory for stability.

CL22 latency at 3200 MT/s with 1.2 V

The module runs at 3200 MT/s with a CAS latency of 22 cycles, delivering PC4-25600 bandwidth. Dual-rank x4 organisation provides capacity headroom for virtualization and database workloads, while the registered buffer reduces electrical load on the memory controller.

Rigorously stress-tested for reliability

Each unit undergoes load testing before shipment to verify compatibility with major OEM platforms. The validated design aims to eliminate instability in mission-critical deployments without requiring additional configuration steps.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $477.99
Pricier than about 70% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $7.47 per GB
Typical for this category: the median of 6,064 items is $7.25 per GB.

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Total capacity64 GB
Product type288-Pin DDR4 SDRAM

Questions about this item

Can this 288-pin DDR4 3200 CL22 module operate alongside existing 3200 MHz registered DIMMs?

Yes, the module runs at 3200 MT/s with CL22 timing and 1.2 V, matching the electrical and timing profile of other PC4-25600 registered DIMMs so it can populate free slots in the same channel.

How do I verify the module is running at 3200 MT/s with ECC active after installation?

Check the BIOS memory information screen or run a tool such as dmidecode or CPU-Z; it should report 3200 MT/s, PC4-25600, CL22 and show ECC enabled for the 64 GB module.

What ships in the box and what must be sourced separately?

The box contains one 64 GB 288-pin DDR4 registered DIMM; no cables, brackets or additional hardware are included and nothing else is required for installation.

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