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Eight green DDR5 RDIMM modules in a row, black chips, no heat spreaders, gold edge connectors

NEMIX RAM

NEMIX RAM DDR5 6400 512GB (8x64GB) CL52 1.1V 4Rx4 ECC RDIMM for Supermicro X14SDW-72C-SP9F memory upgrade

SKU CH-4V5S-A7E81

Eight 64 GB DDR5 RDIMMs deliver 512 GB of registered ECC memory at 6400 MHz CL52 for the Supermicro X14SDW-72C-SP9F

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 512GB 8X64GB

Show 4 more
  • 512 GB total capacity from eight 64 GB modules
  • DDR5-6400 speed with CL52 latency at 1.1 V
  • Registered ECC RDIMM architecture for full-slot stability
  • 288-pin 4Rx4 form factor matched to Supermicro X14SDW-72C-SP9F
  • Built with major OEM Samsung, Micron or Hynix chips

Exact-match DDR5-6400 ECC RDIMM kit

This 512 GB kit contains eight 64 GB DDR5 6400 MT/s registered ECC RDIMMs built to CL52 at 1.1 V. It targets administrators upgrading a Supermicro X14SDW-72C-SP9F motherboard that requires 4Rx4 registered modules running at PC5-51200 speed.

Keyed 288-pin RDIMM installation

Each module uses the 288-pin RDIMM form factor so it only fits DDR5 registered DIMM slots; UDIMM or SODIMM sockets will not accept it. Populate all eight slots in the order specified by the board manual to avoid the common issue of the system halting at POST with partial population.

Verify board population rules first

Confirm the motherboard supports 512 GB total capacity and 4Rx4 registered DIMMs across all channels. Check the manual for approved DIMM population sequences and any BIOS version requirements before ordering.

How it compares

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

Price $16,185.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $31.61 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 numberMR51200-944K8
Total capacity512 GB (8 × 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 items512 GB 8 × 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

How can I verify the kit runs at 6400 MHz with CL52 after installation?

Check the BIOS or UEFI memory information screen; it should show DDR5 6400 (PC5-51200) at 1.10 V with CAS latency 52 across all eight slots.

What does the MR51200-944K8 kit contain and is anything else required?

The box includes eight 64 GB 288-pin DDR5 RDIMM modules for a total of 512 GB; no extra cables, brackets or cooling parts are needed.

Why choose the 512 GB 8x64 GB CL52 kit instead of a smaller capacity?

This exact-match kit provides the 4Rx4 registered ECC configuration the Supermicro X14SDW-72C-SP9F expects for full 512 GB support at rated speed.

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