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Sixteen green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 256GB (16x16GB) DDR5 4800 CL40 1.1V ECC RDIMM 288-Pin 621P-TR 621P-TRT 221P-C9R memory upgrade

SKU CH-GDNQ-KV7HK

256GB kit of sixteen 16GB DDR5 4800 CL40 ECC registered RDIMMs at 1.1V for ThinkMate Supermicro SuperServer 621P-TR, 621P-TRT and 221P-C9R

  • 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 MT/s speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM design protects data integrity in servers
  • Low 1.10 V operating voltage reduces power draw
  • Qualified for ThinkMate Supermicro SuperServer 621P-TR 621P-TRT 221P-C9R

256 GB DDR5 ECC RDIMM kit

This 256 GB kit contains sixteen 16 GB DDR5 4800 CL40 registered DIMMs. Each module runs at 1.1 V and provides ECC error correction for data integrity. The kit is validated for Thinkmate Supermicro SuperServer 621P-TR, 621P-TRT and 221P-C9R platforms. It targets administrators who need maximum registered memory capacity in those specific servers.

Upgrading from lower-capacity RDIMMs

Replacing smaller registered modules with this 16 x 16 GB configuration fills every slot and raises total system memory to 256 GB. The jump is worth it when workloads such as virtualisation, large databases or in-memory analytics exceed the current memory ceiling and the server board supports the full population.

Suited for Thinkmate SuperServer 621P-TR.

Buyers running other server models or workstations that require unbuffered or non-ECC memory cannot use this kit. Systems limited to fewer than sixteen DIMM slots or a lower maximum registered capacity should look at smaller registered kits instead.

How it compares

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

Price $6,424.99
Pricier than about 82% 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 $25.10 per GB
Pricier than about 70% 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

What slot type and pin count do these 16 modules need on the motherboard?

Each 16 GB module is a 288-pin DDR5 RDIMM, so the board must provide 288-pin DDR5 DIMM slots.

What is the correct order for populating the 16 slots on a Supermicro 621P-TR or 221P-C9R?

Follow the motherboard manual channel sequence; the common mistake is skipping a channel or mixing ranks instead of filling one rank per channel first.

Will the Samsung, Micron or Hynix chips on these RDIMMs require any firmware updates or periodic replacement?

The memory chips are fixed components; no firmware updates or scheduled replacements are needed for the modules themselves.

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