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Green circuit board DDR5 memory module with black chips and gold edge connector

NEMIX RAM

NEMIX RAM 128GB DDR5 6400 CL52 2Rx4 1.1V ECC Registered RDIMM H14DST-F memory upgrade

SKU CH-2RW5-21XV9

128GB DDR5-6400 2Rx4 Registered ECC RDIMM at 1.1V CL52, validated for Supermicro H14DST-F motherboards

  • Total capacity128 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128GB capacity expands server memory headroom for heavy workloads
  • DDR5 6400 speed with CL52 latency delivers rated throughput
  • Registered ECC design corrects single-bit errors for data integrity
  • 1V operation matches platform voltage spec for stable recognition
  • 288-pin RDIMM form factor fits Supermicro H14DST-F memory slots

Server DDR5 ECC RDIMM

This 128GB registered DDR5 module is built for the Supermicro H14DST-F motherboard. It targets system administrators and integrators who need guaranteed compatibility and error-correcting stability in a production server environment.

Registered 2Rx4 architecture

The single specification that decides fitment is the registered 2Rx4 organisation combined with 1.1V operation and CL52 timing at 6400 MT/s. Only a motherboard wired for registered DDR5 RDIMMs with this exact rank structure and voltage will initialise the module at full capacity and rated speed.

Keyed 288-pin installation

The 288-pin RDIMM keying prevents insertion into UDIMM or SODIMM slots, so physical mis-installation is unlikely. What usually goes wrong is ignoring the motherboard manual's population order or maximum capacity per channel, which can leave the module unrecognised or running at a reduced speed.

How it compares

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

Price $4,288.99
Pricier than about 78% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $33.51 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 numberMR51200-724K1
Total capacity128 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 DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How does the DDR5 6400 speed behave once the module is installed in the Supermicro H14DST-F?

The memory controller recognises the exact 2Rx4 rank, 1.1V voltage and CL52 timing, so the module runs at its rated 6400 MT/s with full 128GB capacity.

What does the 288-pin RDIMM form factor limit when populating the board?

The registered 288-pin RDIMM fits only RDIMM slots — not UDIMM or SODIMM — and must follow the motherboard's population order for full-capacity operation.

What physical clearance does the module need inside the server chassis?

The stick uses a standard 288-pin RDIMM height with no heat spreader, so it fits any chassis that accepts full-height registered DIMMs.

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