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Single black 288-pin DDR5 RDIMM module with gold contacts, no heat spreader, 128GB label visible

NEMIX RAM

NEMIX RAM 128GB DDR5 4800 CL40 4Rx4 ECC RDIMM 1.1V memory upgrade

SKU CH-0SS0-QFFWD

A single 128GB DDR5 4800 CL40 4Rx4 ECC RDIMM module at 1.1V for ASUS Pro WS WRX90E SAGE SE workstations

  • 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 capacity expands server memory headroom
  • DDR5 4800 speed delivers high bandwidth for workloads
  • ECC registered design protects data integrity under load
  • 1 V operation reduces power draw per module
  • Validated for ASUS Pro WS WRX90E SAGE SE workstation

Compatible Server Memory Upgrade

This 128 GB DDR5 registered DIMM is built for the ASUS Pro WS WRX90E SAGE SE workstation motherboard. It delivers ECC protection and registered buffering for mission-critical server and workstation workloads. The single-module design provides high density in one 288-pin slot.

Thermals and Power Profile

Operating at 1.10 V, the module runs at standard DDR5 voltage without a heat spreader. Registered architecture and ECC logic add minimal overhead to system power draw under typical loads. Passive cooling relies on chassis airflow; no active cooling is required.

Decisive Specification: 4Rx4 Rank Organisation

The quad-rank 4Rx4 layout determines how the memory controller addresses the 128 GB capacity. Verify that your ASUS WRX90E platform supports 4Rx4 registered DIMMs at 4800 MT/s before purchase; systems limited to dual-rank modules will not recognise the full capacity.

How it compares

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

Price $3,986.99
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 $31.15 per GB
Pricier than about 89% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineASUS Server Motherboard Compatible Series Memory
Model nameASUS 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 systemsASUS
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 this 288-Pin DDR5 RDIMM in the ASUS Pro WS WRX90E SAGE SE, and which step is often missed?

Power down, open the chassis, align the module key with the slot, press firmly until both latches click, then verify the firmware recognises the full 128GB at 4800MT/s; the step most people skip is enabling ECC in the BIOS so the registered 4Rx4 chips can correct errors.

What maintenance or replacement will this ECC RDIMM need over its service life?

The module has no heat spreader and no moving parts, so no routine maintenance is required; if a correctable error count climbs or an uncorrectable error appears in the system logs, replace the stick — otherwise it runs for the lifetime of the platform.

What limit appears first when this 4Rx4 registered DIMM runs sustained workloads?

The CAS latency of CL40 at 1.1V sets the timing ceiling; under continuous load the memory controller will hit that latency boundary before thermal or power limits become a factor.

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