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Eight green DDR4 LRDIMM modules in anti-static packaging

NEMIX RAM

NEMIX RAM 512GB (8x64GB) DDR4 2666 ECC LRDIMM CL19 288-Pin Server Memory Upgrade

SKU CH-NR82-90HM2

512 GB kit of eight 64 GB DDR4 2666 ECC load-reduced DIMMs for ThinkMate GPU-optimised servers

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeLoad Reduced
  • Rated voltage1.2 V
  • 512 GB total capacity powers large virtualization clusters with eight 64 GB modules
  • DDR4 2666 speed at CL19 latency feeds multi-GPU compute pipelines
  • ECC load-reduced design maintains data integrity under sustained heavy workloads
  • 2 V operation reduces power draw across fully populated server chassis
  • Validated for ThinkMate GPX-QT8-24E2-8GPU GPU-optimized platforms

512 GB DDR4 2666 ECC LRDIMM kit

This eight-module kit delivers 512 GB of DDR4 2666 ECC LRDIMM memory for Thinkmate GPX-QT8-24E2-8GPU servers. Each 64 GB module operates at 1.2 V with CL19 latency and a 4Rx4 rank structure. The load-reduced design helps maintain signal integrity across fully populated memory channels.

Sustained load behaviour

Modules are stress tested under load to verify stability during extended server workloads. ECC circuitry corrects single-bit errors in real time, preventing data corruption during continuous operation. The 1.2 V operating voltage supports consistent throughput without thermal throttling in dense configurations.

DDR4 interface limits

The DDR4 2666 interface caps peak bandwidth at the PC4-21300 specification. LRDIMM buffering reduces electrical load on the memory controller, allowing eight ranks per channel where standard RDIMMs would not. Builders needing capacity beyond 512 GB per server must evaluate platform-specific memory ceiling limits.

How it compares

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

Price $1,906.99
Pricier than about 68% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $3.72 per GB
Cheaper than about 86% 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 DDR4 2666 MHz ECC LRDIMM Load Reduced Server Memory
Part numberML21300-944K8
Total capacity512 GB (8 × 64 GB)
Product type288-Pin DDR4 LRDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportYes
Buffer typeLoad Reduced
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsTHINKMATE
In the box
Included items512 GB (8 × 64 GB) DDR4 2666 MHz PC4-21300 4Rx4 1.2 V CL19 288-PIN ECC LRDIMM Load Reduced Server Memory KIT

Questions about this item

Does the 1.2 V DDR4 LRDIMM kit run cooler than standard RDIMMs under sustained load?

Load-reduced modules buffer the data bus, lowering electrical loading on the memory controller and typically reducing heat output compared with equivalent-capacity RDIMMs at the same 1.2 V.

Does the ThinkMate server need a specific BIOS revision or CPU generation to recognise 4Rx4 LRDIMMs at 2666 MT/s?

The kit is validated for ThinkMate GPX-QT8-24E2-8GPU systems; the platform firmware and processor must support DDR4-2666 LRDIMM operation for the modules to train at rated speed.

Can I mix these 4Rx4 LRDIMMs with older 1Rx4 or 2Rx4 RDIMMs in the same ThinkMate chassis?

LRDIMM and RDIMM technologies cannot be mixed on the same memory channel; all populated slots must use the same module type for the server to initialise memory correctly.

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