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

NEMIX RAM

NEMIX RAM 256GB (4x64GB) DDR4 3200 CL22 4Rx4 ECC LRDIMM 1.2V 288-pin memory upgrade

SKU CH-NJA7-ZGE5P

256 GB DDR4 server kit with four 64 GB load-reduced ECC modules at 3200 MHz CL22 and 1.2 V

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeLoad Reduced
  • Rated voltage1.2 V

Capacity 256GB 4X64GB

  • 256 GB total capacity from four 64 GB modules
  • DDR4 3200 speed with PC4-25600 bandwidth
  • ECC and load-reduced design for server reliability
  • 2 V operation reduces power draw
  • Validated for ASRock Rack EPYCD8-2T motherboard

Targeted server upgrade

This 256GB kit delivers four 64GB DDR4 LRDIMM modules rated at 3200MHz with CL22 latency. It is built for the ASRock Rack EPYCD8-2T motherboard and uses ECC load-reduced technology to support high-density memory configurations in compatible server platforms.

Thermal and power profile

Operating at 1.2V, the modules run without heat spreaders and rely on server chassis airflow for cooling. Load-reduced buffering reduces electrical load on the memory controller, helping to keep power draw predictable during sustained workloads.

Capacity leap from standard RDIMM

The 4Rx4 organisation allows this kit to reach 256GB where standard registered DIMMs would top out at lower densities. The jump is worthwhile when the motherboard qualifies LRDIMM populations and the application needs maximum memory capacity per socket.

How it compares

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

Price $1,793.99
Pricier than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $7.01 per GB
Cheaper than about 57% 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 3200 MHz ECC LRDIMM Load Reduced Server Memory
Part numberML25600-944K4
Total capacity256 GB (4 × 64 GB)
Product type288-Pin DDR4 LRDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL22
ECC supportYes
Buffer typeLoad Reduced
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock
In the box
Included items256 GB (4 × 64 GB) DDR4 3200 MHz PC4-25600 4Rx4 1.2 V CL22 288-PIN ECC LRDIMM Load Reduced Server Memory KIT

Other versions of this model

5 more in the same range

Questions about this item

How do I install the 288-pin DDR4 LRDIMM modules in the ASRock Rack EPYCD8-2T, and what step is often missed?

Insert each 64GB module into the correct DIMM slots per the motherboard manual, ensuring the notch aligns with the 288-pin key, then press firmly until both retention clips lock; the step often missed is populating all four channels in the prescribed order for quad-channel operation.

What maintenance or replacement will the 4Rx4 ECC LRDIMM kit need over time?

The modules have no heat spreaders and no moving parts, so no routine maintenance is required; replacement is only necessary if a module fails, which the ECC functionality helps detect by correcting single-bit errors and reporting multi-bit errors.

What limit appears first when the 256GB kit runs sustained workloads at 3200 MT/s?

The CAS latency of CL22 at 1.2V sets the timing boundary; under continuous load the memory controller will hit this latency ceiling before any thermal or voltage limit becomes a factor.

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