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Two green DDR5 RDIMM modules in a clear plastic tray

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 6400 CL52 4Rx4 1.1V ECC RDIMM Supermicro X14SDW-64CM-SP9F memory upgrade

SKU CH-5B10-FT2FH

128 GB DDR5 ECC registered server memory kit with two 64 GB modules running at 6400 MT/s, CL52, 1.1 V, 4Rx4 for Supermicro X14SDW-64CM-SP9F

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 2X64GB

Show 4 more
  • 128 GB total capacity from two 64 GB modules for high-density server workloads
  • DDR5 6400 speed with CL52 latency delivers rated bandwidth on supported platforms
  • 4Rx4 registered ECC architecture offloads the memory controller and corrects single-bit errors
  • 1 V operation matches the motherboard's voltage requirement for stable full-population use
  • 288-pin RDIMM form factor fits the Supermicro X14SDW-64CM-SP9F memory slots exactly

Exact-Match DDR5-6400 Kit

This 128GB kit contains two 64GB DDR5-6400 Registered ECC RDIMMs built for the Supermicro X14SDW-64CM-SP9F motherboard. The modules run at PC5-51200 with CL52 timing at 1.10V and present a 4Rx4 organisation that matches the board's memory controller expectations.

Suited for full-population server builds

The Registered architecture and ECC make this kit appropriate for production servers that require error correction and stable operation with every slot filled. Builders needing unbuffered UDIMMs, SODIMMs, non-ECC modules, or a different voltage or rank configuration should look elsewhere.

Handles 128GB at rated DDR5-6400 speed

Two 64GB RDIMMs deliver the full 128GB capacity at the board's supported DDR5-6400 data rate with CL52 latency. Capacity is limited to this 2 x 64GB arrangement; larger configurations or higher speeds are not supported by this specific kit.

How it compares

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

Price $4,116.99
Pricier than about 77% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $32.16 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 numberMR51200-944K2
Total capacity128 GB (2 × 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 items128 GB 2 × 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

My Supermicro X14SDW-64CM-SP9F board needs 288-pin DDR5 RDIMMs — does this kit match that exact form factor?

Yes, this is a 288-pin DDR5 RDIMM kit built for that motherboard; the registered design and 1.10V voltage match the board's memory-controller requirements.

Will these 4Rx4 modules run at 6400 MT/s alongside any existing DDR5 RDIMMs I keep in the other slots?

The kit is rated DDR5-6400 CL52 at 1.10V; when mixed with other DDR5 RDIMMs the system will negotiate a common speed and timing based on the slowest installed module.

After installation, how can I confirm the full 128 GB is recognised and ECC is active?

Check the BIOS memory map or OS tools such as dmidecode and lsmem; they should show 128 GB total, 6400 MT/s, and ECC status as enabled or corrected errors counting.

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