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Two green DDR4 RDIMM modules with black chips, no heat spreader

NEMIX RAM

NEMIX RAM 512GB (2x256GB) DDR4 3200 CL22 8Rx4 ECC RDIMM Supermicro X12DPL-NT6/i6

SKU CH-FD4K-HJSSP

512 GB DDR4 3200 ECC registered DIMM kit with two 256 GB modules, CL22, 1.2 V, 8Rx4, built for Supermicro X12DPL-NT6 and X12DPL-i6 motherboards

  • Total capacity512 GB (2 × 256 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered

Size 512GB 2X256GB

  • Massive 512 GB capacity from two 256 GB modules
  • DDR4 3200 speed keeps data moving at PC4-25600 bandwidth
  • Registered ECC design corrects single-bit errors on the fly
  • 8Rx4 organisation lets the board run fully populated at rated speed
  • 2 V operation matches the motherboard's memory controller spec

Server-grade DDR4 RDIMM kit

This NEMIX RAM kit delivers 512 GB of registered ECC DDR4 memory across two 256 GB modules, built for the Supermicro X12DPL-NT6 and X12DPL-i6 motherboards. It targets administrators who need maximum supported capacity in a dual-processor server without mixing module types.

DDR4 3200 registered limits

The DDR4 3200 interface caps transfer rates at PC4-25600 while the registered buffer adds one cycle of latency, giving CL22 timings at 1.2 V. Full 8Rx4 population across all channels is required to reach the rated capacity; partial fills will reduce total memory available to the OS.

Install in matched pairs

Install both 288-pin RDIMMs in the motherboard's prescribed population order, usually the first slot of each channel, to satisfy the board's rank-interleaving rules. Common issues include seating modules incompletely, mixing with UDIMMs, or skipping a required BIOS update that enables 256 GB per DIMM support.

How it compares

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

Price $2,941.99
Pricier than about 73% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (2 × 256 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $5.75 per GB
Cheaper than about 68% 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 numberMR25600-2584K2
Total capacity512 GB (2 × 256 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 rank8Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSupermicro
In the box
Included items512 GB 2 × 256 GB DDR4 3200 MHz PC4-25600 8Rx4 1.2 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Should I choose the 512GB kit with two 256GB modules or a different capacity for my Supermicro X12DPL-NT6?

The 512GB kit provides two 256GB RDIMMs, the exact capacity and module count this motherboard expects for full-speed operation across both CPU sockets.

What does the DDR4-3200 CL22 rating mean for real-world throughput in this server?

The modules run at 3200 MT/s with a CAS latency of 22 cycles, delivering the bandwidth and timing the X12DPL memory controller is tuned for when all slots are populated.

How does the 288-pin RDIMM interface and registered design affect maximum capacity on this board?

The 288-pin registered DIMM format lets the memory controller drive every slot at 256GB per module, enabling the full 512GB kit without signal-integrity limits that unbuffered DIMMs would hit.

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