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Six bare green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 768GB (6x128GB) DDR5 4800 CL40 ECC RDIMM ThinkMate memory upgrade

SKU CH-HSYM-GXV50

A 768 GB registered ECC DDR5 kit of six 128 GB modules running at 4800 MT/s with CL40 latency for ThinkMate GPU-optimised servers

  • Total capacity768 GB (6 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 768GB total capacity scales demanding server workloads
  • DDR5 4800 speed delivers high memory bandwidth
  • ECC registered design protects data integrity
  • 1V operation reduces power draw per module
  • Validated for ThinkMate GPX-XH8-22S4-8GPU compatibility

Capacity and configuration

This kit provides 768GB of DDR5 ECC registered memory across six 128GB modules. It is built for ThinkMate GPX-XH8-22S4-8GPU servers that require high-density registered DIMMs for multi-socket workloads.

Speed, latency and headroom

Modules run at 4800 MT/s with CL40 latency at 1.1V, delivering PC5-38400 bandwidth. The 4Rx4 organisation maximises rank density per channel, so capacity scales before bandwidth becomes the bottleneck in heavily threaded server tasks.

Platform fit and requirements

The 288-pin RDIMM form factor fits DDR5 registered server motherboards that support 4Rx4 modules and the ThinkMate qualified vendor list. No heat spreader is included, so chassis airflow must meet the platform thermal specification for sustained operation.

How it compares

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

Price $23,761.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (6 × 128 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $30.94 per GB
Pricier than about 89% 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 numberMR38400-744K6
Total capacity768 GB (6 × 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 items768 GB (6 × 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 4Rx4 DDR5 4800 RDIMM modules run alongside existing 2Rx4 DDR5 RDIMMs in my ThinkMate server?

The kit uses 4Rx4 organization; mixing ranks may require specific DIMM-slot population rules defined in the ThinkMate service manual, so verify the supported rank-per-channel limits before combining.

How can I confirm the 1.10 V CL40 ECC RDIMM kit is operating at DDR5 4800 after installation?

Check the BIOS memory-info screen or run a tool such as dmidecode on Linux; both will report the configured speed, voltage, CAS latency and ECC status for each of the six 128 GB modules.

Does the 768 GB kit include a heat spreader or any mounting hardware, or must I purchase them separately?

The specification states no heat spreader is fitted; the package contains only the six 288-pin DDR5 RDIMM modules, so no extra mounting parts are needed or included.

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