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Two green DDR5 RDIMM sticks with black chips, no heat spreader, 288 pins

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 CL40 2Rx4 ECC RDIMM GENOAD12M3-2Q memory upgrade

SKU CH-RBE4-KCW4S

256 GB DDR5-4800 registered ECC RDIMM kit (2×128 GB, CL40, 1.1 V, 2Rx4) validated for the ASRock Rack GENOAD12M3-2Q motherboard

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 2X128GB

Show 4 more
  • Full 256 GB capacity from a matched 2 x 128 GB kit
  • DDR5 4800 speed with CL40 timing for rated throughput
  • Registered ECC design offloads the controller and corrects single-bit errors
  • 2Rx4 organisation and 1.1 V voltage match the motherboard's memory rules
  • 288-pin RDIMM form factor fits the ASRock Rack GENOAD12M3-2Q slots

256GB DDR5 4800 ECC RDIMM kit

This 256GB kit contains two 128GB DDR5 4800 CL40 2Rx4 registered ECC RDIMMs that run at 1.10V. It is built for the ASRock Rack GENOAD12M3-2Q motherboard and uses the 288-pin RDIMM form factor that server memory controllers expect.

Verify motherboard manual before ordering

Check the system or motherboard manual for supported capacities, approved DIMM population order and installation steps. The board requires registered RDIMMs rather than UDIMMs or SODIMMs and the population rules must be followed for full recognition.

Replaces slower or smaller registered ECC modules

The jump is worth it when the current configuration uses lower-capacity or lower-speed registered ECC RDIMMs and the workload needs the full 256GB at the rated DDR5 4800 speed with error correction. Builders who need UDIMM or SODIMM form factors cannot use this kit.

How it compares

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

Price $8,273.99
Pricier than about 85% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $32.32 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-724K2
Total capacity256 GB (2 × 128 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock Rack
In the box
Included items256 GB 2 × 128 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

What comes in the NEMIX RAM 256GB DDR5 4800 kit and is anything else needed for installation?

The kit contains two 128GB DDR5 4800 CL40 2Rx4 ECC Registered RDIMM modules, totalling 256GB. No additional parts are required for installation into compatible 288-pin server DIMM slots.

How do I decide between the available versions or capacities for this memory upgrade?

This listing is a single 256GB kit (2 x 128GB) validated for the ASRock Rack GENOAD12M3-2Q motherboard. Choose this kit when your server needs the maximum validated capacity in a two-module configuration.

What does the DDR5 4800 rating mean for real-world server performance with these modules?

The modules run at 4800 MT/s (PC5-38400) with CL40 latency at 1.10V. Registered ECC architecture lets the memory controller drive both slots at full rated speed while correcting single-bit errors on the fly.

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