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Eight bare green DDR4 LRDIMM modules in a row

NEMIX RAM

NEMIX RAM 512GB (8x64GB) DDR4 2933MHz PC4-23400 4Rx4 1.2V CL21 288-Pin ECC LRDIMM Server Memory Upgrade

SKU CH-8NQ7-KY61Q

Eight 64 GB DDR4 2933 MHz ECC LRDIMM modules totalling 512 GB for ASRock EPYC server boards

  • 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

  • 512GB total capacity from eight 64GB modules
  • DDR4 2933MHz speed rated at PC4-23400
  • ECC Load Reduced DIMM for server reliability
  • 2V operation with CL21 CAS latency
  • 288-pin LRDIMM form factor fits compatible ASRock EPYC boards

512GB DDR4 2933MHz ECC LRDIMM Kit

This NEMIX RAM kit provides 512GB of total capacity across eight 64GB modules. The memory operates at DDR4 2933MHz with a PC4-23400 rating and CL21 latency. It uses Load Reduced DIMM technology with 4Rx4 organisation and on-die ECC for data integrity. The modules run at 1.20V and fit 288-pin DDR4 slots.

Suited for ASRock Rack EPYC servers needing

This kit is built for the ASRock Rack ROMED8-2T motherboard and similar AMD EPYC platforms that support LRDIMM populations. It targets administrators who need the highest possible memory density per channel. Buyers using consumer desktop boards, workstations limited to RDIMM, or systems requiring registered DIMMs instead of load-reduced modules should look elsewhere.

Verify motherboard LRDIMM support

Before ordering, confirm your board accepts 4Rx4 LRDIMMs at the full 2933MHz speed with all eight slots filled. Check the vendor’s qualified vendor list for the exact part number ML23400-944K8. Ensure the BIOS revision supports this density and rank configuration. Cooling airflow over the bare modules must be adequate as no heat spreaders are fitted.

How it compares

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

Price $2,533.99
Pricier than about 71% 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 $4.95 per GB
Cheaper than about 77% of the 20,941 comparable items (median $8.19 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
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

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Questions about this item

What motherboard must I already have for this 512 GB DDR4 2933 MHz ECC LRDIMM kit to be compatible?

This kit is validated for the ASRock Rack ROMED8-2T motherboard built around the AMD EPYC platform, so that board must be installed before the memory will work.

Will these 4Rx4 LRDIMM modules run with older DDR4 2666 MHz registered DIMMs I may keep in the same system?

The board will down-clock all modules to the lowest common speed, so the 2933 MHz LRDIMMs will operate at 2666 MHz alongside the older registered DIMMs.

How can I confirm the kit is running at the rated 2933 MHz CL21 1.20 V after installation?

Check the BIOS memory information screen or a tool such as dmidecode; it should report 2933 MT/s, CAS latency 21, 1.20 V and 4Rx4 organisation for each of the eight 64 GB modules.

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