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Green printed circuit board with black memory chips in a row, gold edge connectors at the bottom, no heat spreader

NEMIX RAM

NEMIX RAM 128GB DDR5 6400MHz CL52 1.1V 2Rx4 ECC Registered RDIMM Supermicro H14DSG-OM memory upgrade

SKU CH-K7W8-HVYN5

128 GB DDR5 6400 MHz registered ECC RDIMM built for the Supermicro H14DSG-OM motherboard

  • Total capacity128 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128 GB capacity recognised at full speed by Supermicro H14DSG-OM
  • DDR5 6400 MT/s PC5-51200 CL52 timing matches controller expectations
  • 1 V registered ECC RDIMM offloads controller for stable full-population operation
  • 2Rx4 288-pin form factor fits motherboard memory-population rules exactly
  • Lifetime replacement warranty with US-based technical support included

Exact-match upgrade for Supermicro H14DSG-OM

This NEMIX RAM kit delivers 128GB of DDR5 registered ECC memory built to the precise rank, voltage and timing the motherboard expects. The 2Rx4 modules operate at 1.1V with CL52 latency so the server recognises full capacity and runs at the rated 6400MHz speed without manual tuning.

Practical limits of DDR5 registered ECC RDIMM

Registered architecture buffers address and command signals, allowing every slot to be populated at full capacity while ECC corrects single-bit errors on the fly. The 288-pin form factor fits only DDR5 RDIMM slots; it will not work in UDIMM or SODIMM sockets and cannot be mixed with unbuffered modules.

Verify your server configuration before ordering

Consult the system or motherboard manual for supported capacities, approved DIMM population order and any BIOS requirements. Confirm the platform accepts 2Rx4 registered modules at this voltage and speed, and ensure sufficient slots are available for the intended installation.

How it compares

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

Price $4,500.99
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 $35.16 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

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

Should I pick a single 128 GB module or split the capacity across multiple DIMMs for the H14DSG-OM?

This kit is a single 128 GB DDR5 6400 RDIMM. Check your motherboard manual for the approved population order; the board may require specific slot filling to run all channels at full speed.

Will the CL52 latency and 6400 MT/s rating actually be reached once installed in the server?

The module is spec-matched to the H14DSG-OM memory controller, so it initialises at DDR5 6400 with CL52 timings at 1.1 V without manual tuning.

Does the 288-pin RDIMM form factor and registered ECC design limit which slots or CPU configurations I can use?

The 288-pin registered ECC RDIMM is the only form factor the H14DSG-OM accepts; it offloads the memory controller so every populated slot runs at the rated 6400 MT/s.

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