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Green rectangular DDR5 RDIMM circuit board with gold contacts and black memory chips, no heat spreader

NEMIX RAM

NEMIX RAM DDR5 6400 128GB 2Rx4 ECC RDIMM Supermicro H14SHM memory upgrade

SKU CH-E8SA-JY991

128 GB DDR5 6400 registered ECC RDIMM, 2Rx4 CL52 at 1.1 V, validated for Supermicro H14SHM motherboards

  • Total capacity128 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Exact-match 128 GB DDR5-6400 CL52 1.1 V 2Rx4 registered ECC RDIMM runs at rated speed
  • Verified fit for Supermicro H14SHM 288-pin RDIMM slots — not UDIMM or SODIMM
  • Registered architecture offloads controller so every slot runs fully populated at full capacity
  • ECC corrects single-bit errors on the fly preventing silent data corruption and unplanned reboots
  • Lifetime replacement warranty with free US-based technical support included

Server-Specific DDR5 RDIMM

This 128GB DDR5 6400 (PC5-51200) registered ECC module is built to the exact rank, voltage, and timing the Supermicro H14SHM motherboard expects. The 2Rx4 organization and 1.10V operation let the board recognize full capacity and run at rated speed without manual tuning.

Suited For Verified H14SHM Upgrades

Administrators expanding a Supermicro H14SHM platform with matched registered ECC memory will find the correct 288-pin RDIMM form factor and CL52 latency. Builders using consumer UDIMMs, SODIMMs, or non-ECC modules cannot use this kit; the board requires registered architecture and ECC for full-slot population.

Fits Registered ECC Memory Channels

The module plugs directly into the H14SHM DDR5 RDIMM slots, satisfying the board's population rules for registered memory. Registered buffering offloads the memory controller so every populated slot operates at 6400 MT/s, while on-die ECC corrects single-bit errors before they affect workloads. Consult the motherboard manual for approved DIMM order and maximum supported capacity per channel.

How it compares

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

Price $4,839.99
Pricier than about 80% 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 $37.81 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

What motherboard slot and memory type must my server already have to accept this 128GB DDR5 6400 RDIMM?

The Supermicro H14SHM must provide a 288-pin DDR5 RDIMM slot; the module is a registered ECC DIMM keyed for that exact socket and will not fit UDIMM or SODIMM slots.

How does the registered ECC design of this 2Rx4 module affect stability when I fill remaining slots on the H14SHM?

Registered buffering reduces electrical load on the memory controller so every populated slot can run at the rated 6400 MT/s, while ECC corrects single-bit errors on the fly to prevent silent data corruption.

Which BIOS indications confirm the kit is running at its rated 6400 MT/s with CL52 timing after installation?

POST memory summary or BIOS setup should show 6400 MT/s (PC5-51200), CAS latency 52, 1.1 V, 2Rx4 organization and the full 128 GB capacity per module.

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