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Six green 288-pin DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 768GB (6x128GB) DDR5 6400MHz CL52 ECC RDIMM SuperMicro BigTwin SYS-222BT-HER memory upgrade

SKU CH-SDAH-2NAS7

A 768GB kit of six 128GB DDR5 ECC registered DIMMs running at 6400MHz CL52 for SuperMicro BigTwin SYS-222BT-HER servers

  • Total capacity768 GB (6 × 128 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank2Rx4
  • 768 GB total capacity with six 128 GB modules
  • DDR5 6400 MHz speed rated at PC5-51200
  • ECC registered RDIMM for data integrity in servers
  • CL52 latency at 1.1 V operating voltage
  • Validated for SuperMicro BigTwin SYS-222BT-HER systems

System-Specific DDR5 ECC RDIMM Kit

This NEMIX RAM kit delivers 768GB across six 128GB registered DDR5 modules built for the SuperMicro BigTwin SYS-222BT-HER. It targets administrators who need maximum capacity in that exact platform without mixing modules.

Upgrade from lower-capacity or slower DDR5 kits

The jump is worth it when workloads exceed the memory ceiling of smaller configurations or when the 6400MHz PC5-51200 data rate matches the server's qualified speed. Systems already running at this spec with fewer modules gain density without changing voltage or latency.

Straightforward DIMM installation

Each 288-pin RDIMM seats in the standard slots; the kit is validated for the named SuperMicro model so no manual timing entry is required. The main risk is populating slots in an order the board firmware does not expect, which can prevent POST until the population guide is followed.

How it compares

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

Price $24,629.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (6 × 128 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $32.07 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 numberMR51200-724K6
Total capacity768 GB (6 × 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 items768 GB (6 × 128 GB) DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Does the 288-pin DDR5 RDIMM form factor match the SuperMicro BigTwin SYS-222BT-HER memory slots?

Yes, the kit uses 288-pin DDR5 RDIMM modules designed for the SuperMicro BigTwin SYS-222BT-HER server.

How are the six 128GB modules installed, and what step is often missed?

Populate all six slots following the motherboard manual channel order; the step often missed is verifying the 2Rx4 rank configuration in BIOS after installation.

When should the ECC RDIMM modules be replaced or checked?

Replace modules if ECC correctable error counts rise persistently in system logs, indicating chip degradation over time.

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