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Green rectangular LRDIMM module with black chips on both sides

SK hynix

SK hynix HMAA8GL7CPR4N-VK 64GB LRDIMM DDR4-2666 ECC 4Rx4

SKU CH-0PVE-RJYS8

A 64 GB LRDIMM DDR4-2666 module with ECC, 4Rx4 organisation, CL19 latency and 1.2 V operation

  • High-density 64 GB LRDIMM reduces slot count
  • DDR4-2666 speed delivers 21300 MB/s bandwidth
  • ECC protection corrects single-bit errors automatically
  • Low 1.2 V operation cuts server power draw
  • CL19 latency keeps response tight under load

64 GB LRDIMM DDR4-2666 for servers

This SK hynix module delivers 64 GB of DDR4-2666 memory in a single LRDIMM package. It is built for servers and workstations that require high-density, error-correcting memory. The 4Rx4 organisation and ECC support help maintain data integrity under sustained workloads. Operating at 1.2 V, it fits standard-height DIMM slots.

ECC and quad-rank design change capacity planning

The on-board ECC detects and corrects single-bit errors without software overhead. The 4Rx4 layout packs four ranks into one module, letting a server reach larger total capacities with fewer populated slots. CL19 latency and the PC4-21300V-L rating define the timed performance envelope. No extra software or drivers are required to activate these features.

Verify LRDIMM support

Confirm that your motherboard and CPU memory controller explicitly support LRDIMM modules and 4Rx4 ranks. Some platforms restrict the number of load-reduced ranks per channel or require specific BIOS revisions. Check the qualified-vendor list for this exact part number. Systems limited to RDIMM or lower rank counts will not accept this module.

How it compares

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

Price $196.99
Typical for this category: the median of 6,523 items is $188.99.

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

Specifications

No published specifications for this item yet.

Questions about this item

Does the 4Rx4 rank layout require any special handling when replacing modules?

The module uses a 4Rx4 organisation with ECC; replacement follows standard LRDIMM procedure and no extra steps are mentioned in the specifications.

What limits sustained throughput on this DDR4-2666 stick?

The rated speed is 2666 MT/s at CL19, so the memory controller and bus timing set the ceiling for continuous data rates.

How much heat does the 1.2 V LRDIMM produce running all day?

Operating at 1.2 V with standard height, the module stays within normal DDR4 thermal limits for continuous server workloads.

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