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Four green 288-pin DDR4 RDIMM modules in static bags

NEMIX RAM

NEMIX RAM 256GB (4 x 64GB) DDR4 3200 CL22 2Rx4 ECC RDIMM memory upgrade

SKU CH-66AW-D94VF

A 256 GB registered ECC DDR4 kit with four 64 GB modules running at 3200 MHz CL22 1.2 V, validated for the Supermicro X12DPFR-AN6 motherboard

  • 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

  • 256 GB total capacity from four matched 64 GB modules
  • DDR4 3200 speed with CL22 latency for rated server performance
  • Registered ECC design corrects single-bit errors and supports full population
  • 2 V operation at standard DDR4 voltage for efficient power draw
  • 288-pin RDIMM form factor verified for Supermicro X12DPFR-AN6 motherboard

256GB DDR4 ECC RDIMM kit for Supermicro servers

This 256GB kit contains four 64GB DDR4 3200 registered ECC modules built to the exact rank, voltage and timing the Supermicro X12DPFR-AN6 motherboard expects. It targets administrators who need maximum capacity in every slot without manual tuning.

Registered buffering keeps every slot stable

The 2Rx4 registered architecture offloads the memory controller so all four DIMMs run at the rated 3200 speed continuously. ECC corrects single-bit errors on the fly, preventing silent data corruption during sustained workloads.

288-pin RDIMMs install like standard server memory

Align the keyed notch with the slot and press until the latches click; no heat spreaders mean clearance is rarely an issue. The most common error is ignoring the motherboard's prescribed population order, which can leave capacity unrecognised.

How it compares

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

Price $1,816.99
Pricier than about 67% 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 $7.10 per GB
Cheaper than about 57% 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

Other versions of this model

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Questions about this item

Does the 1.2 V RDIMM kit run hot or draw extra power when the server runs 24/7?

Registered ECC modules operate at the standard 1.2 V DDR4 voltage and have no heat spreader, so thermal output stays within normal server DIMM limits for continuous operation.

My Supermicro X12DPFR-AN6 board has eight DDR4 slots — must I fill all four channels with this 4 x 64 GB kit for it to post?

The kit provides four 288-pin RDIMMs; the motherboard manual defines the required population order, but the modules themselves work in any validated slot configuration the board supports.

Can I keep my existing 32 GB DDR4 RDIMMs and add this 256 GB kit to reach a larger total?

Mixing different capacities or ranks is not recommended; the board's memory controller expects matched 2Rx4 modules at CL22 3200 MT/s for stable full-speed operation.

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