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Green circuit board DDR5 RDIMM module with black memory chips, no heat spreader, gold edge connector

NEMIX RAM

NEMIX RAM 128GB DDR5 6400 CL52 4Rx4 1.1V ECC RDIMM Supermicro X14SDW-36CE-SP9F memory upgrade

SKU CH-DXRR-880V5

128GB DDR5-6400 ECC registered RDIMM built for the Supermicro X14SDW-36CE-SP9F motherboard

  • Total capacity128 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB

  • 128GB capacity lets you maximise server memory density
  • DDR5 6400 speed delivers 51200 MT/s data throughput
  • CL52 latency and 1.1V voltage match controller requirements exactly
  • 4Rx4 registered ECC architecture corrects errors and supports full-slot populations
  • 288-pin RDIMM form factor fits Supermicro X14SDW-36CE-SP9F motherboard precisely

Exact-fit DDR5 RDIMM for Supermicro X14SDW-36CE-SP9F

This 128GB registered ECC module matches the board's required 288-pin DDR5 6400 specification, including 4Rx4 organisation, CL52 latency and 1.1V operation. It is intended for administrators upgrading that specific motherboard to its full rated capacity.

Sustained enterprise workloads

Registered buffering reduces electrical load on the memory controller, allowing every slot to remain fully populated at 6400 MT/s without down-clocking. On-die ECC corrects single-bit errors in real time, preventing silent data corruption during long-running compute or database tasks.

Plain module, locked-in compatibility

The kit ships without a heat spreader, relying on the server chassis airflow the X14SDW-36CE-SP9F was designed for. Installation follows the board's validated population order; the 288-pin RDIMM keying physically prevents insertion of incompatible UDIMM or SODIMM types.

How it compares

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

Price $4,388.99
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 $34.29 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 numberMR51200-744K1
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 rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB DDR5 6400 MHz PC5-51200 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

How much power does this 1.10V DDR5 6400 RDIMM draw when the server runs continuously?

The module operates at 1.10V, the standard DDR5 voltage, so power draw scales with the 6400 MT/s data rate and 4Rx4 density; actual watts depend on your workload and the X14SDW-36CE-SP9F memory controller.

What motherboard and memory population rules must I already have for this 128GB kit to be recognised?

You need a Supermicro X14SDW-36CE-SP9F motherboard with free 288-pin RDIMM slots and a BIOS that supports 4Rx4 registered ECC DIMMs at DDR5 6400; consult the board manual for approved slot order and maximum capacity per channel.

Will this CL52 registered ECC kit run alongside other DDR5 RDIMMs I keep in the remaining slots?

Mixing is only reliable when every installed DIMM matches the same 6400 MT/s speed, 1.10V voltage, CL52 latency, 4Rx4 rank structure and registered ECC specification; otherwise the memory controller will down-clock or disable slots.

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