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Six green 288-pin DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 768GB (6x128GB) DDR5 4800 CL40 ECC RDIMM THINKMATE RAX-XS4-21S4 memory upgrade

SKU CH-Z1P0-XXSNB

A 768 GB kit of six 128 GB DDR5 4800 CL40 ECC registered RDIMMs validated for Thinkmate RAX-XS4-21S4 servers

  • Total capacity768 GB (6 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 768 GB total capacity for large-scale workloads
  • DDR5 4800 speed with PC5-38400 bandwidth
  • ECC registered design protects data integrity
  • 1 V operation reduces power draw
  • Six 128 GB modules in 288-pin RDIMM form factor

System-Specific DDR5 Kit

This 768GB kit contains six 128GB DDR5 4800 CL40 ECC RDIMM modules built for the Thinkmate RAX-XS4-21S4 rackmount server. It targets administrators who need maximum registered memory capacity in that platform.

Registered ECC Changes

Registered buffering and ECC add command-address parity and single-bit error correction, which stabilise large-capacity loads on the server motherboard. The 1.1V operating voltage matches the DDR5 baseline for this module class.

Pre-Order Checks

Verify the RAX-XS4-21S4 has six free 288-pin DDR5 slots and that its BIOS supports 4Rx4 128GB RDIMMs at 4800 MT/s. Confirm the system accepts 768GB total capacity before purchasing.

How it compares

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

Price $21,729.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (6 × 128 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $28.29 per GB
Pricier than about 79% 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 numberMR38400-744K6
Total capacity768 GB (6 × 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 items768 GB (6 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will the 128 GB DDR5 RDIMM modules need any firmware updates or periodic replacement?

The modules are built with Samsung, Micron or Hynix chips and run at 1.1 V; no firmware updates are required and they are rated for continuous server operation.

What limit appears first when the 768 GB kit runs at 4800 MT/s under sustained load?

The CL40 latency and 1.1 V operating point set the thermal and timing envelope; the memory controller will throttle before the modules exceed their rated speed.

How much heat and noise does the 768 GB DDR5 4800 kit produce when running continuously in a Thinkmate rackmount server?

Registered DDR5 RDIMMs at 1.1 V generate modest heat with no moving parts; system fans handle airflow, so the kit itself adds no audible noise.

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