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Eight green DDR4 LRDIMM modules with black chips and gold contacts

NEMIX RAM

NEMIX RAM 512GB (8x64GB) DDR4 2933 PC4-23400 4Rx4 CL21 288-Pin ECC LRDIMM memory upgrade

SKU CH-KRA8-VY4GP

Eight 64 GB DDR4 2933 LRDIMM modules with ECC and CL21 latency deliver 512 GB for the ASRock Rack EPYCD8-2T motherboard

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeLoad Reduced
  • Rated voltage1.2 V

Capacity 512GB 8X64GB

  • ECC protection prevents data corruption in critical workloads
  • Load Reduced architecture enables 512GB total capacity across 8 slots
  • 2933 MT/s speed supports high-throughput server applications
  • 20V operation matches standard DDR4 server power profiles
  • Validated for ASRock Rack EPYCD8-2T motherboard compatibility

System-Specific Server Memory Kit

This 512GB kit contains eight 64GB DDR4 LRDIMM modules built for the ASRock Rack EPYCD8-2T motherboard. It targets IT professionals who need maximum registered ECC capacity in a single qualified package.

DDR4 2933 Load-Reduced Limits

Load-reduced DIMMs reduce electrical load on the memory bus so all eight slots can be populated at 2933 MT/s, but the platform caps bandwidth at PC4-23400 and latency at CL21. Mixed-rank or higher-speed configurations are not supported by this qualified kit.

Eight-Module LRDIMM Installation

Populate all eight slots following the motherboard manual slot order; the modules have no heat spreaders, so airflow must come from chassis fans. Common issues include mismatched population rules and BIOS versions that do not recognise the full 512GB capacity.

How it compares

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

Price $2,253.99
Pricier than about 70% 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 $4.40 per GB
Cheaper than about 82% 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 numberML23400-944K8
Total capacity512 GB (8 × 64 GB)
Product type288-Pin DDR4 LRDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL21
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 2933 MHz PC4-23400 4Rx4 1.2 V CL21 288-PIN ECC LRDIMM Load Reduced Server Memory KIT

Other versions of this model

5 more in the same range

Questions about this item

Should I pick the 8x64GB kit or a different capacity for my ASRock Rack EPYCD8-2T?

This kit provides 512GB total across eight 64GB modules, matching the board's supported LRDIMM population rules for maximum capacity.

What does the 2933MHz rating deliver once installed in the EPYCD8-2T?

The modules run at DDR4 2933 (PC4-23400) with CL21 latency, giving the rated throughput when the platform memory controller operates at that speed.

How does the 288-pin DDR4 LRDIMM interface limit real-world performance?

The 288-pin DDR4 LRDIMM electrical interface caps transfer rate at 2933 MT/s and uses load-reduced buffering to maintain signal integrity across all eight slots.

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