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

NEMIX RAM

NEMIX RAM MR51200-324K4 128GB (4x32GB) DDR5 6400 CL52 1.1V 2Rx4 ECC Registered RDIMM memory upgrade

SKU CH-QZA6-W0V0H

A 128GB kit of four 32GB DDR5 registered ECC RDIMMs running at 6400MHz with CL52 latency and 1.1V for Supermicro X14SRA-F motherboards

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 4X32GB

Show 4 more
  • 128 GB total capacity with four 32 GB modules for high-density server workloads
  • DDR5 6400 speed rated at PC5-51200 for maximum memory bandwidth
  • CL52 latency and 1.1 V operation tuned for efficient registered performance
  • 2Rx4 ECC registered design detects and corrects single-bit errors automatically
  • 288-pin RDIMM form factor validated for Supermicro X14SRA-F motherboard

Server-grade DDR5 kit

This 128GB kit contains four 32GB DDR5-6400 registered ECC RDIMMs built to the PC5-51200 standard. It targets administrators and integrators who need reliable, high-capacity memory for compatible Supermicro server platforms.

Build integration

The modules use the 288-pin RDIMM form factor and operate at 1.1V with CL52 latency, matching the electrical and mechanical requirements of the specified motherboard. Registered buffering reduces electrical load on the memory controller, allowing all four slots to be populated while ECC corrects single-bit errors in real time.

Ideal for validated Supermicro deployments

This kit suits teams upgrading a qualified Supermicro X14SRA-F system where the exact rank, voltage and timing are confirmed by the vendor. It is not for desktop or workstation boards that require unbuffered UDIMMs, nor for any platform that does not explicitly support DDR5 registered ECC memory.

How it compares

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

Price $5,017.99
Pricier than about 80% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $39.20 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 numberMR51200-324K4
Total capacity128 GB (4 × 32 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 rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB 4 × 32 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will the 1.1V operating voltage limit how long the kit can run at DDR5 6400 without throttling?

The 1.10V rating is the standard JEDEC voltage for DDR5 6400 RDIMMs and is designed for continuous operation at that speed without thermal throttling.

How much heat do four 2Rx4 registered modules generate when the server runs 24/7?

Each 32GB 2Rx4 RDIMM draws low power at 1.1V; the registered buffer reduces electrical load on the memory controller, so total heat output remains modest even with all four slots populated around the clock.

Does the Supermicro X14SRA-F need a specific BIOS revision to recognise all 128GB at CL52?

The kit is spec-matched to the X14SRA-F memory-population rules; consult the motherboard manual for the exact DIMM installation order and any BIOS version required for full 128GB operation at DDR5 6400 CL52.

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