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Four green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 512GB (4x128GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-XKWE-8FH1R

512 GB registered DDR5 kit with ECC and CL40 latency for ThinkMate GPU-optimised servers

  • 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 with four 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design detects and corrects data errors
  • 1 V operating voltage reduces server power draw
  • Validated for ThinkMate GPX-QH24-24E4-8GPU and GPX-QH14-28E4-8HGX systems

System-specific DDR5 kit

This 512 GB kit contains four 128 GB DDR5 4800 ECC RDIMM modules built for ThinkMate GPX servers. Each module runs at 1.10 V with CL40 latency and a 4Rx4 organisation. The registered design adds signal buffering for stable operation in multi-socket platforms.

Suited for ThinkMate GPU-dense servers

It fits ThinkMate GPX-QH24-24E4-8GPU and GPX-QH14-28E4-8HGX systems that require registered ECC memory. Builders using consumer motherboards, non-ECC platforms or laptops cannot use these modules. Systems limited to lower capacities or unbuffered DIMMs should look elsewhere.

Registered ECC RDIMM form factor

The 288-pin DDR5 RDIMM package with on-board register and ECC is the single specification that determines compatibility. Only motherboards wired for registered ECC DDR5 at 4800 MT/s can accept this kit.

How it compares

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

Price $16,596.99
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 $32.42 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 lineTHINKMATE Server/Workstation Compatible Series Memory
Model nameTHINKMATE 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 systemsTHINKMATE
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

Should I choose the 512GB kit or a smaller capacity for my THINKMATE server?

The 512GB kit provides four 128GB modules for maximum density in the GPX-QH24-24E4-8GPU and GPX-QH14-28E4-8HGX systems. Choose a smaller kit only if your workload does not need that much memory.

What does the 4800MHz speed mean when the modules are installed?

The modules run at DDR5 4800 (PC5-38400) with CL40 latency at 1.1V, delivering the rated bandwidth and timing the server platform expects for GPU-optimised workloads.

How does the 288-pin RDIMM interface affect compatibility?

The 288-pin DDR5 RDIMM form factor with registered 4Rx4 organisation matches the memory slots on the listed THINKMATE servers, ensuring correct electrical and mechanical fit.

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