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Two green DDR5 RDIMM modules, bare circuit boards with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 CL40 1.1V ECC RDIMM 4Rx4 288-pin memory upgrade

SKU CH-883W-0KBZS

A 256 GB DDR5 registered ECC kit of two 128 GB modules running at 4800 MT/s with CL40 latency and 1.1 V for Thinkmate Supermicro SuperServer 511E-WR and 521E-WR systems

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity from two 128 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design detects and corrects data errors
  • 1 V operation reduces power draw in dense configurations
  • Validated for ThinkMate Supermicro SuperServer 511E-WR and 521E-WR

Server-grade capacity

This 256 GB kit delivers two 128 GB DDR5 RDIMMs running at 4800 MT/s with CL40 latency and 1.1 V operation. Registered ECC circuitry and 4Rx4 organisation provide error correction and signal integrity for mission-critical workloads.

Built for validated platforms

The modules are qualified for Thinkmate Supermicro SuperServer 511E-WR and 521E-WR systems. Builders targeting other motherboards or consumer desktop chipsets should verify qualified-vendor lists before purchasing.

Registered ECC integration

Each 288-pin DIMM plugs directly into DDR5 RDIMM slots on compatible server boards. The registered buffer reduces electrical load on the memory controller, freeing signal margin for dense population.

How it compares

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

Price $6,998.99
Pricier than about 83% 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 $27.34 per GB
Pricier than about 76% 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 my THINKMATE SuperServer 511E-WR or 521E-WR need a specific BIOS revision to recognise the 256 GB DDR5 4800 kit?

The kit is validated for the THINKMATE SuperServer 511E-WR and 521E-WR; consult the server manual for any required BIOS update before installation.

Can I mix these 128 GB 4Rx4 ECC RDIMMs with smaller DDR5 RDIMMs already installed in the same server?

Mixing different capacities or ranks is not recommended; populate all channels with identical 128 GB 4Rx4 modules for stable operation.

How do I confirm the memory is running at DDR5 4800 with ECC active after installation?

Check the server BIOS or operating system memory report — it should show 4800 MT/s, CL40 timing, 1.1 V and ECC enabled for each 128 GB module.

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