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

SK hynix

SK hynix HMAA8GL7AMR4N-VK Load Reduced DDR4-2666 64GB CL19 ECC Registered server RAM

SKU CH-M9MD-KDVBK

Load-reduced 64 GB DDR4-2666 ECC registered server memory with CL19 timing at 1.2 V

  • Total capacity64 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • Product type288-Pin DDR4 SDRAM
  • 64 GB capacity supports large virtualisation workloads
  • Load-Reduced quad-rank design reduces electrical load on the memory bus
  • DDR4-2666 speed delivers 21300 MB/s bandwidth
  • ECC registered operation detects and corrects single-bit errors
  • CL19 latency at 1.2 V balances response time and power draw

64 GB Load-Reduced DDR4-2666 Server Memory

This 64 GB DDR4-2666 module uses load-reduced ECC registered technology to deliver high-capacity memory for multi-socket servers and virtualization hosts. The quad-rank x4 organisation reduces electrical load on the memory bus, allowing larger total system memory than standard registered DIMMs.

Replaces Standard Registered DIMMs When Capacity

Upgrading to load-reduced modules is worthwhile when the platform memory controller cannot populate all slots with standard registered DIMMs at rated speed. The reduced loading lets you fill more slots per channel while maintaining DDR4-2666 throughput.

DDR4-2666 Bus and 1.2 V Operation Define Practical

The PC4-21300 interface caps peak bandwidth at the rated 2666 MT/s, so workloads needing higher memory throughput will not benefit from this module. CL19 latency and 1.2 V operation are fixed by the DDR4-2666 standard and cannot be tightened without platform support for lower timings or higher voltages.

How it compares

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

Price $208.99
Typical for this category: the median of 6,523 items is $188.99.
Total capacity 64 GB
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $3.27 per GB
Cheaper than about 87% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Total capacity64 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2666 (PC4 21300)

Questions about this item

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

Yes, the 288-pin DDR4 form factor matches standard DDR4 RDIMM slots used in compatible servers.

What is the correct way to seat this Load Reduced DIMM, and what step is often missed?

Align the notch with the slot key, press firmly until both side latches click; the step often missed is verifying both latches fully engage to register the module.

When should I plan to replace this 64GB ECC Registered module?

Replace it if memory diagnostics report uncorrectable ECC errors, the server fails POST with memory beeps, or a firmware update explicitly requires newer DRAM revisions.

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