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Four green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM DDR5 6400 256GB 4x64GB ECC RDIMM CL52 1.1V 4Rx4 Supermicro X14SDV-36C-SP3F memory upgrade

SKU CH-CX9A-1DPS7

256 GB kit of four 64 GB DDR5 6400 ECC registered RDIMMs at 1.1 V CL52, 4Rx4, validated for Supermicro X14SDV-36C-SP3F motherboards

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 4X64GB

  • 256 GB total capacity from four 64 GB modules
  • DDR5 6400 speed with CL52 latency at 1.10 V
  • Registered ECC design corrects single-bit errors on the fly
  • 4Rx4 288-pin RDIMM matches Supermicro X14SDV-36C-SP3F requirements
  • Lifetime replacement warranty with US-based technical support

Exact-Match Server Upgrade

This 256 GB kit delivers four 64 GB DDR5 RDIMMs rated at 6400 MT/s with CL52 latency and 1.1 V operation. It is built for the Supermicro X14SDV-36C-SP3F motherboard and provides registered ECC memory that the platform expects.

Registered DDR5 Limits

Registered DDR5 RDIMMs buffer address and command signals so the memory controller can drive a fully populated bus at rated speed. The 288-pin form factor and 4Rx4 organisation are required by this board; UDIMM or SODIMM modules will not fit or function.

Pre-Install Checks

Confirm the motherboard manual for supported capacities per slot and the approved DIMM population sequence before ordering. Verify that the system firmware recognises 4Rx4 registered ECC modules at 6400 MT/s and that all four slots can be populated simultaneously.

How it compares

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

Price $7,977.99
Pricier than about 84% 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 $31.16 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 numberMR51200-944K4
Total capacity256 GB (4 × 64 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 rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 4 × 64 GB DDR5 6400 MHz PC5-51200 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Should I choose the 256GB 4x64GB kit or a different capacity for my Supermicro X14SDV-36C-SP3F?

The 256GB kit provides four 64GB RDIMMs that fill the board's slots exactly as the memory controller expects. Other capacities would change the rank layout and may not run at the rated DDR5 6400 speed.

What does the DDR5 6400 rating deliver once the modules are installed in the server?

The modules operate at 6400 MT/s with CL52 latency at 1.1V, giving the full PC5-51200 bandwidth the board's memory controller is designed for when all four slots are populated.

How does the 288-pin RDIMM interface and registered design affect real-world operation?

The registered architecture buffers each command so the memory controller can drive all four 4Rx4 modules at DDR5 6400 without signal degradation, while ECC corrects single-bit errors on the fly.

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