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Four green DDR5 RDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 512GB (4x128GB) DDR5 6400MHz CL52 1.1V ECC RDIMM for Supermicro SYS-242B-NR

SKU CH-F5XT-KG2BP

A 512GB kit of four 128GB DDR5 ECC RDIMM modules running at 6400MHz with CL52 latency and 1.1V operation, validated for Supermicro SYS-242B-NR servers

  • Total capacity512 GB (4 × 128 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank2Rx4
  • 512GB total capacity with four 128GB modules
  • DDR5 6400MHz speed rated at PC5-51200
  • ECC registered design protects data integrity
  • 1V operation reduces power draw
  • 288-pin RDIMM form factor fits Supermicro SYS-242B-NR

Capacity and Compatibility

This 512 GB kit contains four 128 GB DDR5 registered DIMMs validated for the Supermicro SYS-242B-NR server. Each module runs at 6400 MHz with CL52 latency at 1.1 V and provides ECC protection for data integrity. The 2Rx4 organisation and 288-pin form factor match the platform memory slots exactly.

Suited Workloads and Limitations

The kit targets enterprise servers that require maximum registered ECC capacity for virtualisation, databases or large-scale compute. Systems needing unbuffered memory, non-ECC modules or lower-density DIMMs cannot use this configuration. Buyers whose motherboards lack DDR5 RDIMM support should look at alternative memory types.

Deciding Specification

Registered ECC DDR5 at 6400 MHz with a 2Rx4 layout is the single attribute that determines fit; the motherboard must explicitly support this module type and speed. Without that confirmation the DIMMs will not post or will fall back to an unsupported mode. Verify the platform qualified-vendor list before ordering.

How it compares

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

Price $19,109.99
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 $37.32 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 numberMR51200-724K4
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 rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items512 GB (4 × 128 GB) DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Will this 6400MHz CL52 DDR5 kit run alongside any existing DDR5 RDIMMs I keep in my SYS-242B-NR?

This kit uses DDR5 ECC RDIMM modules at 6400MHz CL52 1.1V. Mixing kits with different speeds, latencies, voltages, ranks or densities is not recommended and can prevent the server from booting.

How can I verify the kit is operating at 6400MHz CL52 after installation in my SYS-242B-NR?

Enter the BIOS or use a hardware-monitoring tool such as IPMI or dmidecode to confirm each of the four modules reports 6400 MT/s, CL52 timings, 1.1V and ECC registered status.

What comes in the box and is anything else required to install the 512GB kit in my SYS-242B-NR?

The box contains the 512GB kit as four 128GB 2Rx4 288-pin DDR5 ECC RDIMMs. No additional parts are needed; install directly into the server's DIMM slots following the motherboard manual.

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