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

NEMIX RAM

NEMIX RAM 128GB DDR5 6400MHz CL52 4Rx4 1.1V ECC Registered RDIMM memory upgrade

SKU CH-TCE5-FCYQ5

A 128 GB DDR5 registered ECC RDIMM running at 6400 MHz with CL52 latency, 1.1 V operation and 4Rx4 organisation, built for the Supermicro X14SDW-72C-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

Show 4 more
  • 128 GB capacity fits large workloads on the Supermicro X14SDW-72C-SP9F
  • Registered ECC design corrects single-bit errors and stabilises fully populated slots
  • DDR5 6400 speed at CL52 matches the board's rated timing exactly
  • 1 V operation meets the platform's voltage requirement without extra power draw
  • 4Rx4 288-pin RDIMM form factor installs directly into the server's memory slots

Server memory upgrade for Supermicro X14SDW-72C-SP9F

This 128GB DDR5 6400MHz registered ECC RDIMM is built for the Supermicro X14SDW-72C-SP9F motherboard. It delivers the exact rank, voltage, and timing the server's memory controller expects for full-capacity recognition at rated speed. The 4Rx4 organisation and 1.1V operation match the board's population rules. It is not suited for systems that require UDIMM or SODIMM form factors or non-ECC memory.

DDR5 registered ECC limits at 6400MHz

The DDR5 6400MHz PC5-51200 interface with CL52 latency sets the practical bandwidth and timing envelope for this module. Registered architecture buffers the command and address bus so every slot can run fully populated at full capacity without overloading the memory controller. ECC corrects single-bit errors on the fly to prevent silent data corruption and unplanned reboots. The 288-pin RDIMM form factor is mandatory; other pin counts or unbuffered types will not function.

Install in approved population order

Installation requires consulting the system or motherboard manual for supported capacities and the approved DIMM population sequence before inserting the 288-pin module. The registered design offloads the memory controller, but incorrect slot order or exceeding the board's validated capacity per channel will prevent boot or reduce performance. No heat spreader is fitted, so ensure adequate chassis airflow. Verify the memory controller recognises the full 128GB at DDR5 6400MHz after power-on.

How it compares

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

Price $4,246.99
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 $33.18 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

Should I choose the 128GB 4Rx4 kit or a smaller capacity for my Supermicro X14SDW-72C-SP9F?

The 128GB 4Rx4 kit matches the board's qualified population rules; smaller RDIMMs may not reach the same total capacity per channel or run at 6400MHz when fully populated.

What does the 6400MHz rating deliver once installed in the server?

The modules operate at DDR5-6400 (PC5-51200) with CL52 latency at 1.1V, giving the memory controller the exact speed and timing it expects for full-bandwidth operation.

How does the 288-pin RDIMM interface and registered design affect real-world limits?

The 288-pin registered DDR5 form factor lets the board run every slot fully populated at 6400MHz, while on-die ECC corrects single-bit errors before they reach the OS.

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