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Twelve green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 768GB (12x64GB) DDR5 4800 CL40 2Rx4 1.1V ECC RDIMM memory upgrade

SKU CH-TYJ7-9DD84

768GB kit of twelve 64GB DDR5 4800 CL40 ECC registered DIMMs for ThinkMate GPU-optimised servers

  • Total capacity768 GB (12 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 768 GB total capacity from twelve 64 GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth rating
  • CL40 CAS latency at 1.10 V operating voltage
  • ECC registered RDIMM with 2Rx4 organisation for data integrity
  • 288-pin DDR5 form factor validated for Thinkmate GPU-optimised servers

768GB DDR5 ECC RDIMM kit for Thinkmate servers

This 768GB kit contains twelve 64GB DDR5 4800 registered DIMMs built with ECC for error correction. It is designed for Thinkmate GPX-QH24-24E4-8GPU and GPX-QH14-28E4-8HGX GPU-optimised servers that require registered memory. The modules operate at 1.1V with a CL40 latency.

Twelve-module kit fills twelve slots at once

The package delivers a complete 768GB configuration in a single shipment, removing the need to source individual sticks. Each 288-pin RDIMM uses a 2Rx4 organisation and major OEM DRAM from Samsung, Micron or Hynix. No heat spreaders are included, so airflow clearance follows the server chassis design.

Registered ECC DDR5 at 4800 MT/s

The registered buffer and on-die ECC protect data integrity in multi-GPU compute workloads. Speed is fixed at DDR5 4800 (PC5-38400) with CL40 timing. Buyers needing unbuffered UDIMMs, lower latency ratings or non-ECC modules cannot use this kit.

How it compares

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

Price $19,635.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (12 × 64 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $25.57 per GB
Pricier than about 70% 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 numberMR38400-924K12
Total capacity768 GB (12 × 64 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 rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsTHINKMATE
In the box
Included items768 GB (12 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Do the 12 modules include heat spreaders for long-term cooling?

The 12 DDR5 RDIMM modules ship without heat spreaders; airflow from the server chassis provides cooling for the 1.10 V memory kit.

At 4800 MT/s CL40, which limit appears first during sustained GPU workloads?

The registered 2Rx4 DDR5 4800 modules run at the JEDEC 4800 speed ceiling, so memory bandwidth saturates before latency becomes the bottleneck.

How much power and heat does the 768 GB kit add when the server runs all day?

At 1.10 V across twelve 64 GB RDIMMs, the kit draws roughly 84 W, adding modest heat that standard server airflow handles.

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