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Four green DDR5 RDIMM modules with black chips and gold contacts, no heat spreaders

NEMIX RAM

NEMIX RAM 512GB (4×128GB) DDR5 6400MHz PC5-51200 4Rx4 1.1V 288-PIN ECC RDIMM memory upgrade

SKU CH-6QQJ-RJBN6

A 512GB registered DDR5 kit with ECC, four 128GB modules at 6400MHz and CL52 latency, built for Supermicro servers

  • Total capacity512 GB (4 × 128 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank4Rx4
  • 512 GB total capacity from four 128 GB modules
  • DDR5 6400 MT/s speed rated at PC5-51200
  • ECC registered 4Rx4 design protects data integrity
  • Low 1.10 V operation reduces power draw
  • Validated for Supermicro X14SBW-TF systems

Capacity and configuration

This kit delivers 512GB of DDR5 capacity across four 128GB registered DIMMs, each organised as 4Rx4 with ECC. It targets administrators and integrators who need maximum memory density in Supermicro X14SBW-TF platforms for virtualisation, database or AI workloads.

Build integration

The modules use the standard 288-pin DDR5 RDIMM form factor and operate at 1.1V, drawing power directly from the motherboard slots. Registered signalling and on-die ECC reduce electrical load on the memory controller, freeing headroom for sustained throughput in heavily populated configurations.

Upgrade context

The kit replaces lower-capacity or non-ECC DDR5 DIMMs when the workload demands 512GB of registered memory with CL52 latency at 6400MHz. The jump is worth it when the application scales beyond the limits of smaller kits and the platform supports the 4Rx4 organisation.

How it compares

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

Price $19,052.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $37.21 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 lineSupermicro Compatible Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server RAM
Part numberMR51200-744K4
Total capacity512 GB (4 × 128 GB)
Product type288-PIN DDR5 RDIMM
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items512 GB (4 × 128 GB) DDR5 6400 MHz PC5-51200 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Does the CL52 latency limit throughput during sustained workloads?

CL52 is the rated CAS latency at 6400 MHz; sustained throughput depends on the server memory controller and cooling.

How much heat does a 512 GB kit generate when running all day?

Each 128 GB module operates at 1.1 V without a heat spreader; total power draw scales with load and chassis airflow.

Which motherboard slots are required for the 4Rx4 registered DIMMs?

The kit needs a Supermicro X14SBW-TF or compatible DDR5 RDIMM platform with 288-pin slots supporting 4Rx4 registration.

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