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Green DDR5 RDIMM module, 288 pins, no heat spreader

NEMIX RAM

NEMIX RAM 128GB DDR5 4800 CL40 1.1V 4Rx4 ECC RDIMM ASRock WRX90 WS EVO memory upgrade

SKU CH-GH1B-PMTYV

A 128 GB DDR5 4800 registered ECC module with CL40 timing and 1.1 V operation for the ASRock WRX90 WS EVO motherboard

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

Capacity 128GB

Show 3 more
  • 128 GB single-module capacity simplifies high-density server upgrades
  • DDR5 4800 speed with PC5-38400 bandwidth supports demanding workloads
  • ECC registered RDIMM with 4Rx4 organisation protects data integrity
  • 10 V operating voltage reduces power draw in dense configurations
  • Validated for ASRock WRX90 WS EVO motherboard compatibility

128GB DDR5 4800 ECC RDIMM

This 128GB DDR5 module delivers registered ECC memory for the ASRock WRX90 WS EVO motherboard. It operates at 4800 MT/s with a CAS latency of 40 and a 1.10V voltage. The 4Rx4 organisation suits high-capacity server and workstation workloads.

Thermals and power

The module runs at 1.10V without a heat spreader, relying on chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller during sustained operation. Power draw scales with the 4800 MT/s data rate and 128GB density under typical server loads.

Build integration

The 288-pin DDR5 RDIMM form factor fits the WRX90 WS EVO DIMM slots directly. ECC and registered operation require a platform that supports both features for full functionality. A single 128GB stick leaves additional slots free for further capacity expansion.

How it compares

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

Price $3,855.99
Pricier than about 76% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $30.12 per GB
Pricier than about 86% 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 DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-744K1
Total capacity128 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
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock
In the box
Included items128 GB (1 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Other versions of this model

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Questions about this item

How do I install the 288‑pin DDR5 RDIMM in the ASRock WRX90 WS EVO and which step is often missed?

Align the key notch with the slot, press firmly until both side latches click, then verify in BIOS that the module registers at 4800 MT/s and 1.10 V; the step most often missed is fully seating both latches so the register engages.

What maintenance or replacement will the 128GB 4Rx4 ECC module need over time?

No scheduled maintenance; ECC corrects single‑bit errors automatically, and the module only needs replacement if the system logs uncorrectable errors or fails memory diagnostics.

What limit appears first during sustained workloads on this CL40 registered DDR5?

The CAS latency of 40 cycles at 4800 MT/s sets the timing ceiling, while the registered buffer and 1.1 V operation keep thermals stable under continuous load.

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