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Eight green DDR5 RDIMM modules in a row, no heat spreaders, 288 gold pins visible

NEMIX RAM

NEMIX RAM MR51200-324K8 256GB (8x32GB) DDR5 6400 ECC RDIMM memory upgrade

SKU CH-X5KW-C8F3N

256GB DDR5-6400 ECC registered server memory kit with eight 32GB modules at CL52 and 1.1V for Supermicro X14SDW-64CM-SP9F

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 8X32GB

Show 4 more
  • 256 GB kit populates all eight slots at full rated speed
  • DDR5 6400 CL52 timing matches the memory controller exactly
  • Registered ECC design offloads the controller and corrects single-bit errors
  • 1 V operation keeps power draw low in dense server builds
  • 2Rx4 288-pin RDIMM form factor fits the Supermicro X14SDW-64CM-SP9F motherboard

Server memory kit

The NEMIX RAM MR51200-324K8 provides 256 GB of DDR5 ECC Registered memory across eight 32 GB modules. It targets administrators expanding Supermicro X14SDW-64CM-SP9F platforms that require Registered DIMMs at DDR5 6400 speed. The 2Rx4 organisation and CL52 latency match the board's native timing profile.

Compatibility checks

Verify the motherboard manual for approved DIMM population order and maximum supported capacity per channel before ordering. Confirm the system accepts 288-pin Registered modules at 1.1 V and that all eight slots can be populated simultaneously. BIOS version may affect recognition of the full 256 GB kit.

Thermals and power

Modules operate at the standard 1.1 V DDR5 voltage with no integrated heat spreader, relying on chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller when all slots are filled. Power draw scales with the eight-module population; ensure the server's cooling zone delivers adequate airflow across the DIMM row.

How it compares

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

Price $9,096.99
Pricier than about 86% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $35.54 per GB
Pricier than about 90% 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 nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-324K8
Total capacity256 GB (8 × 32 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 8 × 32 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Does the 256GB kit include all eight 32GB modules or do I need to buy any separately?

The kit ships with eight 32GB DDR5 6400 ECC RDIMM modules for a total of 256GB; no extra modules are required.

Should I choose the 2Rx4 CL52 1.10V version or another capacity for the Supermicro X14SDW-64CM-SP9F?

This 256GB 8x32GB 2Rx4 CL52 1.10V kit matches the motherboard's qualified DDR5 6400 RDIMM specification; other capacities would need separate verification.

Will the CL52 latency at DDR5 6400 run at full speed when all eight slots are populated?

Yes, the registered architecture and exact 2Rx4 rank let the memory controller operate all eight slots at the rated 6400 MT/s with CL52 timings.

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