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Two green DDR5 RDIMM modules without heat spreaders in a matched pair

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 6400 CL52 4Rx4 ECC RDIMM Supermicro X14SRA-F memory upgrade

SKU CH-XQ02-4YENR

128 GB DDR5 server memory kit with two 64 GB registered ECC RDIMMs rated 6400 MT/s CL52 at 1.1 V for Supermicro X14SRA-F

  • 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 in a matched 2 x 64 GB kit
  • DDR5 6400 speed with CL52 latency runs at rated frequency
  • Registered ECC architecture corrects single-bit errors for data integrity
  • 1 V operation matches the server memory controller specification
  • Verified 288-pin RDIMM fitment for Supermicro X14SRA-F motherboard

Exact-match DDR5 6400 ECC RDIMM kit

This 128GB kit contains two 64GB DDR5 6400 (PC5-51200) Registered ECC RDIMMs. Each module runs at 1.1V with CL52 latency and a 4Rx4 organisation. The 288-pin form factor is built for the Supermicro X14SRA-F motherboard and uses major OEM Samsung, Micron or Hynix components.

Check your motherboard manual first

Verify that the X14SRA-F supports 128GB total capacity and the required DIMM population order for 4Rx4 registered modules. Confirm the board accepts DDR5 6400 Registered ECC RDIMMs at 1.1V and that all slots you plan to fill follow the vendor-approved sequence. No heat spreader is included so ensure chassis airflow meets the module specifications.

Ideal for full-population server upgrades

Suits administrators expanding a Supermicro X14SRA-F to maximum registered ECC capacity with matched ranks and voltage. Not for systems that require unbuffered UDIMMs, SODIMMs, non-ECC memory or a different DDR generation. Builders needing lower capacity, different rank structure or consumer-form-factor modules should look elsewhere.

How it compares

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

Price $4,509.99
Pricier than about 78% 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 $35.23 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

What is included in the 128GB kit and do I need anything else to install it?

The kit contains two 64GB DDR5 6400 CL52 4Rx4 ECC Registered RDIMM modules, part number MR51200-944K2, 288-pin, 1.10V. No extra parts are required for installation in a compatible Supermicro X14SRA-F motherboard.

Why choose the 2x64GB 4Rx4 DDR5-6400 CL52 kit instead of a different capacity or rank?

This 128GB kit matches the Supermicro X14SRA-F memory population rules for registered ECC RDIMMs at DDR5 6400 (PC5-51200) with 4Rx4 organisation and 1.1V, ensuring full-capacity recognition at rated speed.

What does the DDR5 6400 CL52 rating mean for real-world server performance?

The modules run at 6400 MT/s with CAS latency 52 at 1.10V, providing the bandwidth and error-correcting stability the X14SRA-F memory controller expects when all slots are populated with registered ECC RDIMMs.

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