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

NEMIX RAM

NEMIX RAM 128GB DDR5 6400 CL52 2Rx4 1.1V ECC Registered RDIMM Supermicro H13DSH memory upgrade

SKU CH-GDPG-QRWVR

128 GB DDR5-6400 ECC registered RDIMM, 2Rx4 CL52 at 1.1 V, validated for Supermicro H13DSH servers

  • 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 2Rx4 registered ECC at 1.1 V
  • Verified fit for Supermicro H13DSH motherboard with 288-pin RDIMM form factor
  • Registered architecture offloads the controller for full-population stability and ECC corrects single-bit errors
  • Check your system manual for supported capacities and DIMM population rules before installing
  • Lifetime replacement warranty with US-based technical support included

Exact-match 128 GB DDR5-6400 RDIMM

This registered ECC module delivers 128 GB at 6400 MT/s with CL52 timing and 1.1 V operation. It is built for the Supermicro H13DSH motherboard and uses the 288-pin RDIMM form factor that board requires.

Registered DDR5 limits

The RDIMM architecture buffers address and command signals so the memory controller can drive every slot at full speed even when fully populated. ECC corrects single-bit errors on the fly, but the module will not work in systems that accept only unbuffered UDIMMs or SODIMMs.

Major OEM chips no spreader

Chips from Samsung Micron or Hynix are mounted on a bare PCB without a heat spreader, relying on server chassis airflow for cooling. The 2Rx4 rank organisation fits the board's population rules, and the 288-pin keying prevents mis-installation in incompatible slots.

How it compares

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

Price $4,171.99
Pricier than about 77% 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 $32.59 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

Should I pick the 128 GB DDR5-6400 CL52 2Rx4 registered ECC kit or a different capacity for my Supermicro H13DSH?

This kit is the exact-match 128 GB DDR5-6400 (PC5-51200) 2Rx4 registered ECC module at 1.1 V CL52 that the H13DSH memory controller expects, so it is recognised at full capacity and rated speed; choose a different capacity only if your board manual lists it in the approved population table.

What does the DDR5-6400 (PC5-51200) rating mean once the module is installed in the server?

The module will run at 6400 MT/s with CL52 latency at 1.1 V, delivering the full PC5-51200 bandwidth the platform specifies when all slots are populated with registered DIMMs.

How does the 288-pin registered ECC RDIMM interface affect real-world stability and capacity limits?

The registered buffer offloads the memory controller so every slot can run fully populated at 128 GB per DIMM, while on-die ECC corrects single-bit errors on the fly to prevent silent data corruption and unplanned reboots.

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