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Four green DDR4 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM DDR4 3200 ECC Registered RDIMM 256GB (4×64GB) CL22 1.2V 2Rx4 Supermicro X12SPA-TF memory upgrade

SKU CH-NKWF-VSEKX

256GB kit of four 64GB DDR4 3200 ECC registered RDIMMs at CL22 and 1.2V, validated for Supermicro X12SPA-TF servers

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered

Size 256GB 4X64GB

Show 8 more
  • 256 GB total capacity from four 64 GB modules for memory-intensive server workloads
  • DDR4 3200 speed with CL22 latency delivers rated throughput for Supermicro X12SPA-TF
  • Registered ECC design corrects single-bit errors and stabilises fully populated slots
  • 20 V operation matches the board's voltage requirement for reliable operation
  • 288-pin RDIMM form factor ensures exact fit in the motherboard's memory slots

Exact-match DDR4-3200 ECC RDIMM kit

This 256 GB kit contains four 64 GB Registered DIMMs built to the precise 2Rx4, 1.2 V, CL22 specification the Supermicro X12SPA-TF memory controller expects. It installs in the board's 288-pin DDR4 slots and is recognised at full capacity and rated speed without manual tuning.

Capacity and population headroom

Four ranks per module let the controller address the full 256 GB across all populated slots while the registered buffer keeps electrical loading stable. Systems that require more than four modules per channel or need a different rank structure will not be supported by this kit.

Thermals, noise and power

Bare modules without heat spreaders rely on chassis airflow and draw only 1.2 V at the rated frequency. In a properly ventilated server enclosure they run silently and add minimal thermal load to the memory subsystem.

How it compares

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

Price $1,756.99
Pricier than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $6.86 per GB
Cheaper than about 58% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR4 ECC RDIMM Registered Server Memory
Part numberMR25600-924K4
Total capacity256 GB (4 × 64 GB)
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 4 × 64 GB DDR4 3200 MHz PC4-25600 2Rx4 1.2 V 288-PIN ECC RDIMM KIT

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Questions about this item

Will the 288-pin DDR4 3200 RDIMMs work with the Supermicro X12SPA-TF when all slots are filled?

Yes, the 2Rx4 registered ECC modules are spec-matched to the X12SPA-TF memory-population rules and run at full 3200 speed when every slot is populated.

How can I confirm the 256 GB kit is running at its rated 3200 MT/s and CL22 latency after installation?

Check the BIOS memory information screen or use a tool such as dmidecode to verify each 64 GB DIMM reports DDR4-3200, 1.20 V and CL22 timings.

Does the package include only the four 64 GB RDIMMs or are any cables or brackets supplied?

The box contains only the four 64 GB 288-pin DDR4 3200 RDIMMs; no cables, brackets or additional hardware are included.

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