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Four green DDR5 RDIMM modules in anti-static packaging

NEMIX RAM

NEMIX RAM 512GB (4×128GB) DDR5 4800MHz ECC RDIMM CL40 1.1V ThinkMate GPX-XH20-28S4-8HGX memory upgrade

SKU CH-2YGK-EEQ0K

DDR5 ECC registered server memory kit with 512GB capacity across four 128GB modules running at 4800MHz CL40

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Massive 512 GB capacity with four 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design detects and corrects data errors
  • Low 1.10 V operation reduces server power draw
  • Validated for ThinkMate GPX-XH20-28S4-8HGX GPU-optimised servers

System-Specific 512GB DDR5 Kit

This 512GB kit contains four 128GB DDR5 4800MHz ECC registered DIMMs built for the ThinkMate GPX-XH20-28S4-8HGX GPU-optimized server. IT professionals managing mission-critical workloads in that platform receive validated capacity and error correction.

Registered ECC Limits on DDR5 4800

Registered ECC RDIMMs add a clock cycle for command buffering, which stabilises heavy loads but caps the effective data rate at the JEDEC 4800MT/s baseline. The 4Rx4 organisation increases density per module while requiring the memory controller to support quad-rank addressing.

Straightforward DIMM Installation

The 288-pin modules seat in standard DDR5 server slots without tools; align the key notch, press until the ejectors click, and confirm population order in the system manual. Common issues arise when mixing ranks or skipping the required BIOS update for 128GB density support.

How it compares

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

Price $14,416.99
Pricier than about 90% 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 $28.16 per GB
Pricier than about 79% 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 4×128GB kit or look for a different capacity for the ThinkMate GPX-XH20-28S4-8HGX?

The kit supplies 512GB total across four 128GB modules; select it when your server needs that exact capacity and has four free DDR5 RDIMM slots.

What does the DDR5 4800 CL40 rating deliver once installed in the ThinkMate GPU-optimised server?

The modules run at 4800 MT/s with CL40 latency and 1.10V, providing registered ECC bandwidth of PC5-38400 for stable throughput under heavy GPU workloads.

How does the 288-pin DDR5 RDIMM interface and 4Rx4 organisation limit real-world use in this system?

The 288-pin registered DDR5 form factor fits only DDR5 RDIMM slots, and the 4Rx4 rank structure counts as four logical ranks per module — verify the platform supports four ranks per channel before installing all four sticks.

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