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Two green DDR5 RDIMM modules without heat spreaders, 288-pin, 128GB kit

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 4800 CL40 2Rx4 ECC RDIMM memory upgrade for ASRock Rack GENOA2D24G-2L+

SKU CH-NTK8-6Y2GN

A 128 GB DDR5 registered ECC kit (2 × 64 GB, CL40, 1.1 V) validated for the ASRock Rack GENOA2D24G-2L+ motherboard

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 2X64GB

Show 4 more
  • 128GB capacity with two 64GB modules for high-density server memory
  • DDR5-4800 speed rated at PC5-38400 for rated performance
  • CL40 CAS latency and 1.1V voltage matching controller expectations
  • Registered ECC with 2Rx4 rank for error correction and full-slot stability
  • 288-pin RDIMM form factor verified for ASRock Rack GENOA2D24G-2L+

Targeted Server Memory Upgrade

This 128GB kit delivers two 64GB DDR5 4800 RDIMM modules built to the exact rank, voltage and timing the ASRock Rack GENOA2D24G-2L+ memory controller expects. Registered ECC architecture offloads the controller and corrects single-bit errors, keeping fully populated slots stable at rated speed.

Replaces Mismatched or Smaller Kits

Swapping in this spec-matched pair removes the risk of down-clocking or capacity limits caused by mixed ranks, voltages or unbuffered DIMMs. The jump is worth it when your workload needs the full 128GB at 4800MT/s with hardware error correction and the board's population rules are satisfied.

DDR5 4800 Registered DIMM Limits

The 288-pin RDIMM form factor only fits motherboards wired for registered DDR5; it will not seat in UDIMM or SODIMM slots. Bandwidth tops out at the PC5-38400 data rate, and CL40 latency is fixed by the module's SPD, so systems requiring lower latency or higher speeds 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 $3,408.99
Pricier than about 74% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $26.63 per GB
Pricier than about 74% 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 lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-924K2
Total capacity128 GB (2 × 64 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 items128 GB 2 × 64 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

Will these 288-pin RDIMMs fit the ASRock Rack GENOA2D24G-2L+ motherboard?

Yes. The kit is built as 288-pin DDR5 RDIMMs at 1.1 V, the exact form factor and voltage the GENOA2D24G-2L+ memory slots require.

What is the correct slot order when installing both 64 GB modules?

Follow the motherboard manual's population sequence; install the first module in the primary channel slot, then the second in the matching channel slot so the 2Rx4 ranks are recognised at full 128 GB capacity.

Do the modules need any firmware updates or heat-spreader maintenance over time?

No firmware is required; the modules have no heat spreader, so only keep the server's airflow paths clean and re-seat the DIMMs if the system ever reports correctable ECC errors.

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