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Two green DDR5 RDIMM modules with gold contacts and black chips

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 CL40 4Rx4 ECC RDIMM THINKMATE RAX-QE12

SKU CH-3KYZ-Q8DCN

A 256 GB DDR5 ECC registered server kit with two 128 GB modules running at 4800 MT/s CL40 for Thinkmate RAX-QE12

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256GB total capacity across 2 modules of 128GB each
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • CL40 CAS latency at 1.1V operating voltage
  • ECC registered RDIMM with 4Rx4 rank for data integrity
  • 288-pin DDR5 form factor validated for Thinkmate RAX-QE12

System-Specific DDR5 Kit

This NEMIX RAM kit delivers 256GB across two 128GB DDR5 RDIMMs built for the ThinkMate RAX-QE12 rackmount server. Each module runs at 4800 MT/s with CL40 latency at 1.1V and uses a 4Rx4 registered ECC design for data integrity in mission-critical workloads.

Upgrade From Lower-Capacity RDIMMs

Replacing smaller registered DIMMs with this 256GB kit expands the memory pool for virtualisation, databases and large-scale analytics. The jump is worthwhile when the current configuration hits capacity limits and the platform supports 128GB dual-rank modules at the native 4800 speed.

Capacity And Headroom

The 256GB total comfortably handles dense VM clusters, in-memory databases and heavy compile farms while ECC and registered signalling protect data accuracy. Headroom narrows once the server fills every slot with 4Rx4 modules, as further expansion would require higher-density parts not covered by this kit.

How it compares

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

Price $8,458.99
Pricier than about 85% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $33.04 per GB
Pricier than about 90% 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 numberMR38400-744K2
Total capacity256 GB (2 × 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 items256 GB (2 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the 288-pin DDR5 RDIMM form factor fit the Thinkmate RAx-QE12 motherboard slots?

Yes, these 288-pin DDR5 RDIMM modules are built to match the Thinkmate RAx-QE12 memory slots exactly.

What is the correct way to seat both 128 GB modules so the server recognises the full 256 GB?

Power down, open the chassis, align each module notch with the slot key, press firmly until both side clips click, then verify 256 GB in BIOS.

When should the registered ECC modules be replaced to keep the server stable?

Replace modules only if memory diagnostics report uncorrectable errors or the system logs repeated corrected ECC events over time.

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