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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 memory upgrade for THINKMATE SuperServer 521C-NR

SKU CH-KW5N-JAHSC

256 GB DDR5 ECC registered server memory kit with sixteen 16 GB modules at 4800 MT/s, CL40, 1.1 V for the ThinkMate SuperServer 521C-NR

  • 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 with 16 matched 16 GB modules
  • DDR5 4800 speed rated at PC5-38400 for server workloads
  • ECC registered RDIMM design protects data integrity under load
  • 1 V operating voltage reduces power draw in dense configs
  • Validated for ThinkMate SuperServer 521C-NR compatibility

System-specific DDR5 RDIMM kit

This NEMIX RAM kit supplies 256 GB of DDR5 4800 registered ECC memory across 16 modules of 16 GB each. It is built for the THINKMATE SuperServer 521C-NR and uses 1Rx8 Samsung, Micron or Hynix chips at 1.1 V with CL40 latency.

Verify server DIMM slots and population rules

Confirm the SuperServer 521C-NR has 16 available 288-pin DDR5 RDIMM slots and that its memory controller supports a full 1Rx8 population at 4800 MT/s. Check the system manual for any rank-per-channel limits or specific slot-filling sequences before installing all 16 modules.

Suited for maxed-out ThinkMate 521C-NR builds

This kit fits administrators who need the full 256 GB capacity in a single validated package for the named server. Buyers who want fewer modules, lower capacity, unbuffered DIMMs or a different speed grade should look at other configurations.

How it compares

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

Price $7,336.99
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 $28.66 per GB
Pricier than about 81% 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 does the 256 GB kit contain and is anything else required?

The kit includes sixteen 16 GB DDR5 4800 CL40 1.10 V ECC registered RDIMM modules. No extra parts are needed for installation in the supported server.

How do I decide between the available capacities for the SuperServer 521C-NR?

This part number MR38400-618K16 provides the maximum 256 GB configuration using all sixteen slots. Smaller kits use fewer 16 GB modules if you need less capacity.

What does the 4800 speed rating mean once the memory is installed in the server?

The modules run at DDR5 4800 MT/s (PC5 38400) with CL40 latency at 1.10 V, delivering the rated bandwidth and error correction the platform expects.

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