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Two green DDR5 RDIMM modules, no heat spreaders, 288 pins each

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 4800 CL40 ECC RDIMM for HP Z4 G5

SKU CH-RA0Q-N09WQ

128 GB DDR5 ECC registered memory kit in two 64 GB modules running at 4800 MT/s CL40 for HP Z4 G5 workstations

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB total capacity with two 64 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design protects data integrity
  • 10 V operation reduces power draw
  • Validated for HP Z4 G5 workstation compatibility

Capacity and Compatibility

This NEMIX RAM kit delivers 128GB of DDR5 memory in a 2x64GB configuration built specifically for the HP Z4 G5 workstation. It targets professionals running memory-intensive workloads such as virtualization, rendering or large dataset analysis who need registered ECC stability.

Pre-Installation Checks

Verify that your workstation is an HP Z4 G5 and that the motherboard supports DDR5 4800 RDIMM modules with a 2Rx4 rank structure. Confirm the system accepts registered ECC memory at 1.1V and has two free 288-pin slots for the dual-channel kit.

Thermals and Power

The modules operate at 1.10V without integrated heat spreaders, relying on the workstation’s directed airflow for cooling. Registered buffering and ECC add minimal latency overhead while maintaining signal integrity under sustained load. Power draw scales with the 4800 MT/s data rate during normal operation.

How it compares

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

Price $3,207.99
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 $25.06 per GB
Pricier than about 70% 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 numberMR38400-924K2
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
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsHPE
In the box
Included items128 GB (2 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the kit include anything besides the two 64GB modules?

The package contains only the two 64GB DDR5 4800 CL40 288-pin ECC RDIMM modules; no extra cables, brackets or software are included.

When should I choose this 128GB 2Rx4 kit instead of a lower-capacity option?

Select this 128GB (2 x 64GB) 2Rx4 kit when your HP Z4 G5 workload needs the full 128GB capacity and registered ECC stability at 4800 MT/s.

What does the 4800 MT/s rating deliver once installed in the Z4 G5?

The modules run at DDR5 4800 (PC5-38400) with CL40 latency at 1.10 V, providing registered ECC throughput matched to the workstation's memory controller.

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