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Green printed circuit board with 288 gold edge contacts and black memory chips, no heat spreader

NEMIX RAM

NEMIX RAM DDR5 6400 128GB ECC RDIMM 2Rx4 CL52 Supermicro H14SST-GE memory upgrade

SKU CH-00PX-QBH7Q

128 GB DDR5-6400 ECC registered DIMM with CL52 timing and 1.1 V operation, validated for the Supermicro H14SST-GE motherboard

  • Total capacity128 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Exact-match 128GB DDR5-6400 CL52 1.1V 2Rx4 RDIMM installs at rated speed
  • Verified fitment for Supermicro H14SST-GE with 288-pin registered form factor
  • Enterprise stability from registered ECC architecture corrects single-bit errors on the fly
  • Uses major OEM Samsung Micron Hynix chips for consistent server-grade reliability
  • Lifetime replacement warranty with free US-based technical support included

128 GB DDR5-6400 ECC RDIMM for Supermicro H14SST-GE

This 128 GB registered ECC module is built for the Supermicro H14SST-GE motherboard. It delivers DDR5-6400 speed at 1.1 V with CL52 latency in a 2Rx4 configuration. The 288-pin RDIMM form factor matches the board's memory slots exactly.

Registered ECC architecture

Registered buffering reduces electrical load on the memory controller so every slot can run fully populated at the rated 6400 MT/s. ECC corrects single-bit errors in-flight to prevent silent data corruption. The module operates at the DDR5-standard 1.1 V; boards that require a different voltage will not support it.

2Rx4 rank layout decides slot population

The dual-rank 2Rx4 organisation determines how many modules the H14SST-GE can accept per channel and the maximum capacity per slot. Installing a different rank structure can prevent the system from recognising the full 128 GB or from booting at the rated speed. Consult the motherboard manual for the approved population order before ordering.

How it compares

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

Price $4,806.99
Pricier than about 79% 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 $37.55 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

Is the 128 GB DDR5-6400 CL52 2Rx4 RDIMM the right module for my Supermicro H14SST-GE server?

Yes, this kit is an exact-match upgrade built to the board's required 288-pin Registered ECC form factor, 1.1 V voltage, CL52 timing and 2Rx4 rank so the memory controller recognises the full 128 GB at the rated 6400 MT/s speed.

What does the 6400 MT/s rating actually deliver once the DIMM is installed in the H14SST-GE?

The module runs at DDR5-6400 (PC5-51200) with CL52 latency, giving the server its maximum supported memory bandwidth while ECC and registered buffering keep every slot stable at full population.

Does the 288-pin DDR5 RDIMM interface limit how many modules I can populate on this motherboard?

The registered RDIMM design offloads the memory controller, allowing all supported slots to be filled at 128 GB per DIMM without signal degradation, but you must follow the H14SST-GE manual for approved population order.

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