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Two green 288-pin DDR5 RDIMM modules with black chips, no heat spreader

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 ECC RDIMM 4Rx4 CL40 288-pin memory upgrade

SKU CH-YX0E-2MA62

Two 128 GB DDR5 ECC RDIMM modules running at 4800 MHz with CL40 latency and 1.1 V operation for HPE Z8 G5 workstations

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity across two 128 GB modules for large workloads
  • DDR5 4800 speed with CL40 latency for fast data access
  • ECC registered design detects and corrects memory errors automatically
  • 1 V operation reduces power draw in dense server configurations
  • Validated for HP Z8 G5 and Z8 Fury G5 workstations

Capacity & Purpose

This 256 GB kit provides two 128 GB DDR5 4800 registered ECC modules for HP Z8 G5 and Z8 Fury G5 workstations. It is built for servers and workstations that require error-correcting registered memory at standard voltage.

Compatibility Check

Verify that your system accepts 288-pin DDR5 RDIMM modules with a 4Rx4 organisation and CL40 timing at 1.1 V. The motherboard must support registered ECC memory and the full 256 GB capacity across two slots.

Thermals & Power

Modules operate at the standard 1.1 V without heat spreaders, relying on chassis airflow for cooling. Registered buffers add slight latency but keep power draw predictable for dense server configurations.

How it compares

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

Price $8,069.99
Pricier than about 84% 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 $31.52 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 lineHPE Server/Workstation Compatible Series Memory
Model nameHPE DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-744K2
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
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsHPE
In the box
Included items256 GB (2 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the 256 GB kit ship as two 128 GB modules or must I buy extra sticks?

The kit contains two 128 GB DDR5 RDIMMs for a total of 256 GB; no additional modules are required.

Should I choose the 4Rx4 CL40 version or is another rank available for the HP Z8 G5?

This kit is built as 4Rx4 CL40 at 4800 MT/s, the specification validated for the HP Z8 G5 and Z8 Fury G5 workstations.

What does the 4800 MT/s rating mean once the memory is installed in the workstation?

The modules run at DDR5 4800 (PC5-38400) with CL40 latency at 1.1 V, delivering the rated bandwidth and error-correction for the supported platform.

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