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Two green DDR5 RDIMM modules with black chips and gold contacts

NEMIX RAM

NEMIX RAM 32GB (2x16GB) DDR5 4800 CL40 ECC RDIMM THINKMATE RAX-XS4-21S4 memory upgrade

SKU CH-JEAN-Z606J

32 GB dual-channel DDR5 kit with ECC registered 288-pin RDIMMs at 4800 MT/s CL40 for Thinkmate RAX-XS4-21S4 servers

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • ECC protection ensures data integrity for critical workloads
  • Registered design stabilises signal quality on server motherboards
  • DDR5 4800 speed delivers 38400 MB/s bandwidth per module
  • Dual-rank 1Rx8 organisation optimises density in 288-pin form factor
  • Low 1.10 V operation reduces power draw in dense configurations

System-specific DDR5 upgrade for ThinkMate

This 32 GB kit contains two 16 GB DDR5 4800 CL40 ECC RDIMM modules built for the ThinkMate RAX-XS4-21S4 rackmount server. Registered buffering and on-die ECC protect data integrity in multi-socket workloads. The kit ships new and is validated for that platform.

Verify DDR5 RDIMM slots

Confirm the server has free 288-pin DDR5 RDIMM slots and that the memory population guide allows a matched pair of 1Rx8 modules. The system must support 1.1 V operation and PC5-38400 speed; mixing with other speeds or ranks can prevent boot.

Steady throughput with registered ECC under

Registered signalling reduces electrical load on the memory controller during sustained traffic, while ECC corrects single-bit errors without halting the system. CL40 latency and 4800 MT/s deliver consistent bandwidth for virtualisation and database tasks that run for hours.

How it compares

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

Price $938.99
Pricier than about 60% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $29.34 per GB
Pricier than about 83% 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 numberMR38400-618K2
Total capacity32 GB (2 × 16 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 rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsTHINKMATE
In the box
Included items32 GB (2 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the kit include two 16 GB modules or a single 32 GB stick?

The kit contains two 16 GB DDR5 RDIMMs, giving 32 GB total in a matched pair.

Should I choose this CL40 4800 MHz ECC registered kit or a faster alternative?

This CL40 4800 MHz ECC registered kit matches the ThinkMate RAX-XS4-21S4 qualified speed; faster modules would downclock to 4800 MHz anyway.

What does the 4800 MHz rating deliver once installed in the RAX-XS4-21S4?

The server runs the memory at DDR5 4800 with CL40 timings and 1.1 V, providing 32 GB of registered ECC capacity.

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