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Sixteen green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM THINKMATE 256GB (16X16GB) DDR5 4800 PC5-38400 CL40 ECC RDIMM memory upgrade

SKU CH-N0DB-ZKEXT

256 GB of DDR5 server memory in sixteen registered ECC modules running at 4800 MT/s with CL40 latency

  • Total capacity256 GB (16 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity across 16 modules of 16 GB each
  • DDR5 4800 speed rated at PC5-38400 for high throughput
  • ECC registered RDIMM design protects data integrity in servers
  • 1 V operating voltage reduces power draw per module
  • 288-pin 1Rx8 layout fits Thinkmate HDX-XH24-52S4 high-density servers

256GB DDR5 4800 ECC RDIMM kit

This 256GB kit contains sixteen 16GB DDR5 4800 ECC registered DIMMs built for THINKMATE HDX-XH24-52S4 high-density servers. It targets IT teams expanding memory capacity in compatible enterprise platforms. Each module operates at 1.1V with CL40 latency and 1Rx8 organisation.

Thermals and power in normal use

The modules run at the standard DDR5 voltage of 1.1V and have no heat spreaders, relying on server chassis airflow for cooling. Registered buffering and ECC add minimal overhead while maintaining signal integrity under sustained load. Power draw scales with the number of populated slots in the target system.

Single spec that decides fit

Compatibility is limited to the THINKMATE HDX-XH24-52S4 server; the kit will not work in consumer motherboards or other OEM platforms. Buyers needing memory for different server models or workstation boards must select a different part number.

How it compares

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

Price $6,775.99
Pricier than about 83% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (16 × 16 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $26.47 per GB
Pricier than about 73% 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 numberMR38400-618K16
Total capacity256 GB (16 × 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 items256 GB (16 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How do I install the 16 RDIMM modules into the THINKMATE HDX-XH24-52S4 server?

Power down the server and open the chassis. Locate the 288-pin DDR5 DIMM slots on the motherboard. Align the notch on each module with the slot key, insert vertically until the ejector clips snap shut, and repeat for all 16 slots.

What maintenance or replacement will the 1Rx8 ECC RDIMM kit need later?

The modules have no heat spreaders and no moving parts, so routine maintenance is limited to keeping the server air filters clean. If a module fails, replace the single 16 GB stick; ECC corrects single-bit errors automatically.

What limit appears first when the 256 GB kit runs at 4800 MT/s under sustained load?

The registered buffer adds one cycle of latency, so the CL40 timing at 1.10 V becomes the bottleneck before thermal throttling, because the modules lack heat spreaders to dissipate prolonged high-throughput heat.

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