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Four green 288-pin DDR5 RDIMM modules in a kit

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 4800 CL40 1.1V ECC RDIMM THINKMATE 421GE-TNRT SuperServer memory upgrade

SKU CH-DQMF-CMH9S

128GB DDR5 4800 ECC RDIMM kit with four 32GB modules at CL40 and 1.1V for THINKMATE SuperServer 421GE-TNRT

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB total capacity from four 32 GB modules
  • DDR5 4800 speed for high-throughput server workloads
  • ECC registered design detects and corrects data errors
  • 1 V operation reduces power draw per module
  • Validated for Thinkmate SuperServer 421GE-TNRT systems

Target system and capacity

This 128GB kit supplies four 32GB DDR5 modules built for the THINKMATE 421GE-TNRT SuperServer. Registered ECC RDIMMs provide the error correction and signal integrity that multi-socket server boards require.

Registered ECC changes reliability

Each stick uses a 1Rx4 organisation with on-die ECC and a register between the DRAM and the memory controller. The registered design reduces electrical load on the bus, allowing the full four-module population without signal degradation.

Speed and voltage decide fit

The modules run at 4800 MT/s (PC5-38400) with a CAS latency of 40 at 1.10V. A board that cannot operate at this exact data rate and voltage will not post with this kit installed.

How it compares

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

Price $3,891.99
Pricier than about 76% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $30.41 per GB
Pricier than about 87% 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 numberMR38400-314K4
Total capacity128 GB (4 × 32 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 rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsTHINKMATE
In the box
Included items128 GB (4 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will the 1Rx4 DDR5 RDIMM modules need any firmware updates or reconfiguration after installation?

The modules are factory-tested for the ThinkMate 421GE-TNRT platform and install without firmware changes; ECC and registered operation are handled by the server BIOS automatically.

At continuous DDR5 4800 speed, does the CL40 latency or the 1.10 V voltage become the first bottleneck?

The CAS latency of CL40 is the fixed timing limit at 4800 MT/s; voltage remains at the standard 1.10 V and does not throttle performance.

With no heat spreader on the 288-pin RDIMMs, how hot do they run during all-day server workloads?

The modules operate at the standard 1.10 V DDR5 voltage, so thermal output stays within JEDEC limits and is managed by the server’s existing airflow.

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