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Four green DDR5 RDIMM modules without heat spreaders in a 256GB kit

NEMIX RAM

NEMIX RAM DDR5 6400 256GB 4x64GB CL52 1.1V 4Rx4 ECC Registered RDIMM memory upgrade

SKU CH-F37T-GNFG2

256 GB DDR5 registered ECC server memory kit, four 64 GB modules at 6400 MHz CL52 1.1 V, validated for Supermicro X14SDI-36C-SP3F

  • 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 lets you fully populate four slots with 64 GB modules
  • DDR5 6400 speed with CL52 latency matches the motherboard's rated timing for stable operation
  • Registered ECC architecture offloads the controller and corrects single-bit errors to prevent data corruption
  • 1 V operating voltage meets the board's spec for efficient server memory performance
  • Verified compatible with the Supermicro X14SDI-36C-SP3F motherboard for exact-fit installation

Targeted Server Upgrade

This 256GB kit delivers four 64GB DDR5 6400 Registered ECC RDIMMs built to the exact rank, voltage and timing the Supermicro X14SDI-36C-SP3F memory controller expects. The 4Rx4 organisation and 1.1V operation let every slot run fully populated at rated speed without manual tuning.

Replaces Lower-Capacity Kits

Swapping a smaller or slower DDR5 kit for this 4x64GB set adds the full 256GB the board can address in a single validated configuration, eliminating the guesswork of mixing modules. The jump is worthwhile when workloads need the maximum registered capacity this platform supports.

DDR5 RDIMM Constraints

Registered DDR5 modules require a motherboard wired for 288-pin RDIMM signalling and a BIOS that recognises 4Rx4 density at PC5-51200 speeds. Systems limited to UDIMM, SODIMM or lower rank counts will not post with this kit installed.

How it compares

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

Price $7,786.99
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 $30.42 per GB
Pricier than about 87% 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

5 more in the same range

Questions about this item

Will these 288-pin DDR5 RDIMMs physically fit the Supermicro X14SDI-36C-SP3F motherboard slots?

Yes, the kit uses the 288-pin RDIMM form factor that the X14SDI-36C-SP3F requires; it is not a UDIMM or SODIMM.

What is the correct installation order for the four 64 GB modules on this board?

Consult the Supermicro X14SDI-36C-SP3F manual for the approved DIMM population sequence; the board's memory-controller rules dictate which slots must be filled first.

Do the modules need any firmware updates or thermal-pad replacement during their service life?

No firmware updates or thermal-pad changes are required; the registered ECC design runs at 1.1 V without a heat spreader and is covered by a lifetime replacement warranty.

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