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NEMIX RAM

NEMIX RAM 256GB 2x128GB DDR5 6400 CL52 1.1V ECC Registered RDIMM memory upgrade

SKU CH-JTYS-1CEC5

A 256GB DDR5 server memory kit with two 128GB registered ECC RDIMMs running at 6400MHz CL52 and 1.1V for the Supermicro X14SDW-64CM-SP9F motherboard

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 256 GB total capacity from two 128 GB modules for high-density server workloads
  • DDR5 6400 speed with CL52 latency delivers rated bandwidth for memory-intensive tasks
  • 1 V operation at 4Rx4 registered ECC reduces power draw while maintaining data integrity
  • 288-pin RDIMM form factor matches Supermicro X14SDW-64CM-SP9F motherboard requirements exactly
  • Major OEM Samsung, Micron or Hynix chips ensure enterprise-grade reliability and compatibility

Exact-Match DDR5 Server Upgrade

This 256 GB kit delivers two 128 GB DDR5 6400 Registered ECC RDIMMs built to the exact rank, voltage and timing the Supermicro X14SDW-64CM-SP9F memory controller expects. The 4Rx4 organisation and 1.10 V operation let the board recognise full capacity at rated speed without manual tuning. It is not for systems that require unbuffered UDIMMs or SODIMM form factors.

Sustained Load Behaviour

Registered buffering offloads the memory controller so every slot runs fully populated at 6400 MT/s during continuous workloads. ECC corrects single-bit errors on the fly, preventing silent data corruption and unplanned reboots that would otherwise interrupt production tasks. The CL52 latency remains stable across extended operation because the modules are specified for the platform's native timing.

Thermals Noise and Power

Operating at 1.10 V keeps power draw low for dense 128 GB densities, reducing heat output in fully populated servers. No heat spreaders are fitted, relying on chassis airflow for cooling rather than adding acoustic noise from active components. The low-voltage DDR5 design helps maintain thermal headroom when all DIMM slots are occupied.

How it compares

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

Price $9,576.99
Pricier than about 87% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $37.41 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 numberMR51200-744K2
Total capacity256 GB (2 × 128 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 items256 GB 2 × 128 GB DDR5 6400 MHz PC5-51200 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

How much power does the 1.10V DDR5 kit draw when running continuously in a fully populated server?

Each module operates at the standard DDR5 voltage of 1.10V, keeping per-DIMM power low even with all slots filled.

What motherboard slot and population rules must the Supermicro X14SDW-64CM-SP9F already have to accept this 288-pin RDIMM kit?

The board needs DDR5 RDIMM slots and must support 4Rx4 registered DIMMs populated per the manual's approved order.

Will the 6400 CL52 registered ECC modules run at rated speed alongside slower DDR5 DIMMs already installed?

The memory controller will clock all populated slots to the lowest common speed, so mixing with slower DDR5 forces this kit to downclock.

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