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Eight green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 1TB (8x128GB) DDR5 4800 CL40 ECC RDIMM ThinkMate GPX-XH8-22S4-8GPU memory upgrade

SKU CH-64VK-ZJZJ9

1TB server memory kit of eight 128GB DDR5 4800 CL40 ECC registered RDIMMs at 1.1V for ThinkMate GPX-XH8-22S4-8GPU

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 1TB total capacity with eight 128GB modules
  • DDR5 4800 speed rated at PC5-38400
  • ECC registered design for data integrity
  • CL40 CAS latency at 1.1V operating voltage
  • 288-pin RDIMM form factor with 4Rx4 organisation

1TB DDR5 4800 ECC RDIMM kit

This 1TB memory kit contains eight 128GB registered DIMMs built for the ThinkMate GPX-XH8-22S4-8GPU GPU-optimised server. Each module runs at DDR5 4800 with CL40 latency and 1.1V operation. ECC and registered buffering protect data integrity in mission-critical workloads.

Eight-module population fills every slot

The kit supplies a full 1TB across all eight DIMM positions so the server can run at maximum configured capacity without mixing module sizes. 4Rx4 organisation and Samsung, Micron or Hynix chips deliver the density required for GPU-accelerated compute tasks.

Verify eight-slot support

Confirm the motherboard provides eight DDR5 RDIMM slots and accepts 4Rx4 registered modules at 1.1V. Systems limited to fewer slots or unbuffered memory cannot use this kit. Check the server manual for population rules before ordering.

How it compares

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

Price $30,627.99
Pricier than about 93% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $30.63 per GB
Pricier than about 88% 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 numberMR38400-744K8
Total capacity1 TB (8 × 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 items1 TB (8 × 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 the 1.1 V DDR5 modules need active cooling in a ThinkMate GPX-XH8-22S4-8GPU running continuously?

These 288-pin RDIMMs operate at 1.10 V without a heat spreader; the registered design reduces electrical load on the memory controller, keeping thermal output low and silent during sustained workloads.

What is the first limit reached when all eight 128 GB sticks run at DDR5 4800 CL40 under heavy load?

The CAS latency of CL40 at 4800 MT/s sets the timing ceiling; bandwidth scales with the eight-channel layout of the compatible ThinkMate server.

Does the 4Rx4 organisation change replacement planning compared to lower-rank modules?

Each 128 GB module uses a 4Rx4 configuration; if a single rank fails the entire stick must be swapped, so keep one spare 128 GB RDIMM on hand.

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