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Eight green DDR4 LRDIMM modules, no heat spreaders, gold contacts visible

NEMIX RAM

NEMIX RAM 512GB (8x64GB) DDR4 2666 ECC LRDIMM memory upgrade

SKU CH-SQVV-XNGS9

512 GB DDR4 2666 ECC LRDIMM kit with eight 64 GB modules at CL19 and 1.2 V for ASRock Rack EPYCD8-2T

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeLoad Reduced
  • Rated voltage1.2 V

Capacity 512GB 8X64GB

  • 512GB total capacity for memory-intensive server workloads
  • 8x64GB modules populate all slots on compatible boards
  • DDR4 2666 speed with CL19 latency for stable throughput
  • ECC LRDIMM design reduces electrical load on the memory bus
  • 2V operation lowers power draw in dense configurations

ASRock Rack EPYCD8-2T 512GB kit

This NEMIX RAM kit provides 512GB of DDR4 2666 ECC LRDIMM memory across eight 64GB modules. It is built for the ASRock Rack EPYCD8-2T motherboard and targets server or workstation workloads that demand large registered capacity with error correction.

DDR4 2666 LRDIMM limits

The load-reduced design buffers address and control signals so the memory controller sees only one electrical load per module, allowing all eight 4Rx4 ranks to run at 2666 MT/s without exceeding the platform’s electrical budget. Standard registered DIMMs would present a heavier load and may not reach this density at the same speed.

Installing eight 288-pin LRDIMMs

Populate every slot in the order the ASRock Rack manual specifies; the board must recognise all 512GB at POST before the operating system loads. A single mis-seated module or a slot populated out of sequence usually causes the system to halt with a memory error code, so verify each 288-pin connector clicks fully home before powering on.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $1,895.99
Pricier than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $3.70 per GB
Cheaper than about 86% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineASRock Server Motherboard Compatible Series Memory
Model nameASRock DDR4 2666 MHz ECC LRDIMM Load Reduced Server Memory
Part numberML21300-944K8
Total capacity512 GB (8 × 64 GB)
Product type288-Pin DDR4 LRDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportYes
Buffer typeLoad Reduced
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock
In the box
Included items512 GB (8 × 64 GB) DDR4 2666 MHz PC4-21300 4Rx4 1.2 V CL19 288-PIN ECC LRDIMM Load Reduced Server Memory KIT

Other versions of this model

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Questions about this item

Should I pick the 8 x 64 GB kit or a different capacity for my ASRock EPYCD8-2T?

The kit provides 512 GB total across eight 64 GB modules, filling all DIMM slots on the EPYCD8-2T for maximum supported capacity.

What does the 2666 MHz rating deliver in a live server?

The modules run at DDR4 2666 (PC4 21300) with CL19 latency, giving the bandwidth and timing the motherboard specifies for stable operation.

How does the LRDIMM interface affect what I can install?

Each module is a 288 pin DDR4 LRDIMM with 4Rx4 organisation and ECC, so the memory controller sees reduced electrical load and allows the full eight module population.

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