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Eight green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 128GB (8x16GB) DDR5 4800 CL40 ECC RDIMM memory upgrade for HP Z4 G5 Workstation

SKU CH-Z2C9-X18JP

Eight 16 GB DDR5 ECC registered DIMMs totalling 128 GB at 4800 MT/s CL40 for the HP Z4 G5 workstation

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128GB total capacity across 8 modules for heavy workloads
  • DDR5 4800 speed with PC5-38400 bandwidth for fast data throughput
  • ECC registered design detects and corrects memory errors automatically
  • CL40 latency at 1.1V for stable low-voltage operation
  • 288-pin 1Rx8 RDIMM form factor built for HP Z4 G5 compatibility

HP Z4 G5 memory kit

This 128 GB kit contains eight 16 GB DDR5 RDIMM modules built for the HP Z4 G5 workstation. Registered ECC operation protects data integrity in professional workloads. The modules run at 4800 MT/s with a CL40 latency at 1.1 V. No heat spreaders are fitted.

Upgrading from lower capacity or non-ECC

The kit replaces smaller DDR5 configurations or non-ECC memory that cannot meet workstation stability requirements. The jump is worth it when ECC error correction and registered signalling are mandated by the platform. Systems already populated with 128 GB of identical spec gain no further benefit.

128 GB headroom for multi-tasking workloads

Eight ranks of 1Rx8 density give ample headroom for virtualisation, large datasets and concurrent applications. The 4800 MT/s rate and CL40 timing suit the Z4 G5 memory controller without overclocking. Workloads that exceed 128 GB or require higher bandwidth will need a platform with greater memory capacity or speed.

How it compares

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

Price $3,321.99
Pricier than about 74% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $25.95 per GB
Pricier than about 71% 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 numberMR38400-618K8
Total capacity128 GB (8 × 16 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 rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsHPE
In the box
Included items128 GB (8 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will these 288-pin DDR5 RDIMM modules fit the HP Z4 G5 workstation memory slots?

Yes, the kit is built as 288-pin DDR5 RDIMM modules that match the HP Z4 G5 workstation memory slot specification.

What is the correct order for populating the eight 1Rx8 modules during installation?

Follow the HP Z4 G5 service manual population sequence; the common mistake is skipping the designated first channel slots before filling the remaining banks.

When should the registered ECC RDIMM kit be replaced if ECC error counters start rising?

Replace the kit when the system logs show increasing corrected or uncorrected ECC error counts, indicating module degradation.

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