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Four green DDR4 LRDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 256GB (4x64GB) DDR4 2933 PC4-23400 CL21 4Rx4 1.2V 288-Pin ECC LRDIMM memory upgrade

SKU CH-31A2-JZ7YY

256 GB DDR4 server kit with four 64 GB ECC load-reduced DIMMs at 2933 MHz CL21, 1.2 V, 288-pin

  • Capacity256GB (4 x 64GB)
  • SpeedDDR4 2933 (PC4 23400)
  • ECCYes
  • Buffered/RegisteredLoad Reduced
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V

Capacity 256GB 4X64GB

  • 256 GB total capacity with four 64 GB modules for high-density server memory
  • Load-reduced ECC DDR4 at 2933 MHz with CL21 latency for stable error-corrected performance
  • 20 V operation reduces power draw in dense EPYC platforms
  • 288-pin LRDIMM form factor designed for ASRock Rack ROMED8-2T compatibility
  • Built with major OEM Samsung Micron Hynix chips and stress-tested under load

256GB ECC LRDIMM kit for ASRock EPYC boards

This kit provides 256GB of DDR4 2933 memory across four 64GB load-reduced DIMMs. It targets administrators upgrading ASRock Rack ROMED8-2T motherboards running AMD EPYC processors where registered ECC capacity is required.

Quad-rank 4Rx4 modules at 1.2V

Each module uses a 4Rx4 organisation with CL21 latency and operates at 1.20V. The load-reduced design reduces electrical load on the memory controller, allowing the full 256GB kit to populate all four slots without exceeding the platform's rank-per-channel limits.

Verify ROMED8-2T qualification

Confirm the motherboard firmware supports 64GB LRDIMMs at 2933MT/s and review the vendor's memory population guide for correct slot order. The kit contains no heat spreaders, so chassis airflow must meet the server's thermal specification for high-density memory configurations.

Highlights

  • 256 GB total capacity with four 64 GB modules for high-density server memory
  • Load-reduced ECC DDR4 at 2933 MHz with CL21 latency for stable error-corrected performance
  • 20 V operation reduces power draw in dense EPYC platforms
  • 288-pin LRDIMM form factor designed for ASRock Rack ROMED8-2T compatibility
  • Built with major OEM Samsung Micron Hynix chips and stress-tested under load

Specifications

BrandNEMIX RAM
SeriesASRock Server Motherboard Compatible Series Memory
ModelASRock DDR4 2666MHZ ECC LRDIMM Load Reduced Server Memory
Part NumberML23400-944K4
Capacity256GB (4 x 64GB)
SpeedDDR4 2933 (PC4 23400)
ECCYes
Buffered/RegisteredLoad Reduced
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemASRock
CAS LatencyCL21
Heat SpreaderNo
Type288-Pin DDR4 LRDIMM
Rank4Rx4
FeaturesDDR4 ECC LRDIMM Load Reduced Server Motherboard Compatible
Package Content256GB (4X64GB) DDR4 2933MHZ PC4-23400 4Rx4 1.2V CL21 288-PIN ECC LRDIMM Load Reduced Server Memory KIT

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Questions about this item

Will the 4Rx4 LRDIMM modules need any firmware updates or specific BIOS settings on the ASRock ROMED8-2T to stay stable over time?

The kit is built from major-brand DRAM and tested under load for the ASRock ROMED8-2T; no extra firmware steps are required beyond normal BIOS memory training.

What is the first limit reached when the four 64 GB modules run at 2933 MT/s CL21 continuously?

The 1.20 V operating voltage and 288-pin DDR4 LRDIMM electrical spec define the sustained envelope; the memory controller on the EPYC platform will throttle before the modules exceed their rated speed.

How loud and hot do the bare 64 GB LRDIMMs get when the server runs all day at 2933 MT/s?

With no heat spreader and a 1.2 V load-reduced design, the modules rely on chassis airflow; typical server fan curves keep them within normal DDR4 thermal limits without adding audible noise.

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