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Four green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 512GB (4 x 128GB) DDR5 4800 CL40 1.1V ECC RDIMM 288-Pin memory upgrade

SKU CH-SJ4C-0MQXS

512 GB DDR5 4800 CL40 ECC registered kit with four 128 GB modules at 1.1 V for HPE Z8 G5 workstations

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512 GB total capacity from four 128 GB modules
  • DDR5 4800 MT/s speed rated at PC5-38400
  • ECC registered design protects data integrity
  • Low 1.10 V operation reduces power draw
  • Validated for HP Z8 G5 and Z8 Fury G5 workstations

HPE Z8 G5 compatible 512GB DDR5 kit

This 512GB kit contains four 128GB registered DDR5 modules built for HPE Z8 G5 and Z8 Fury G5 workstations. ECC and registered signalling protect data integrity in professional workloads. The modules operate at 4800MT/s with a CL40 latency. No heat spreader is fitted.

Capacity and headroom at 512GB

Four 128GB RDIMMs deliver 512GB total capacity for large datasets, virtualisation and in-memory databases. The 4Rx4 organisation provides high density per channel. Systems limited to lower maximum memory per slot or fewer slots cannot use the full kit.

Thermals and power at 1.1V

Modules run at 1.10V standard DDR5 voltage without a heat spreader. Registered buffering reduces electrical load on the memory controller. Typical server airflow keeps temperatures in spec during sustained loads. Power draw scales with population and frequency.

How it compares

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

Price $16,264.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $31.77 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 numberMR38400-744K4
Total capacity512 GB (4 × 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 items512 GB (4 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will these 4Rx4 DDR5 4800 RDIMMs run alongside existing DDR5 4800 RDIMMs already installed in an HP Z8 G5?

Yes, the kit uses the same DDR5 4800 CL40 1.1 V registered specification, so it will operate at the same speed and voltage as matching modules already in the system.

How can I confirm the full 512 GB is recognised and ECC is active after installation?

Enter the workstation BIOS or UEFI and verify the total memory shows 512 GB with ECC status enabled; the OS memory report should match that figure.

Does the package include anything besides the four 128 GB RDIMMs, such as a heat spreader or installation tool?

The box contains only the four 128 GB DDR5 4800 CL40 1.1 V ECC RDIMM modules; no heat spreader or extra accessories are supplied.

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