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Two green DDR5 RDIMM modules, bare chips, no heat spreader

NEMIX RAM

NEMIX RAM DDR5 6400 256GB (2x128GB) CL52 1.1V ECC RDIMM 2Rx4 Supermicro SYS-222HA-TN memory upgrade

SKU CH-AMYQ-BCQ1K

256 GB dual-rank DDR5 ECC RDIMM kit running at 6400 MHz with CL52 latency and 1.1 V operation for the Supermicro SYS-222HA-TN server

  • Total capacity256 GB (2 × 128 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank2Rx4
  • 256 GB kit expands server capacity with two 128 GB modules
  • DDR5 6400 MT/s data rate accelerates memory-intensive workloads
  • CL52 latency and 1.1 V operation balance speed with efficiency
  • ECC RDIMM with 2Rx4 organisation protects data integrity in critical applications
  • Validated for Supermicro SYS-222HA-TN ensuring drop-in compatibility

Server-grade DDR5 ECC RDIMM kit

This 256 GB kit contains two 128 GB DDR5 ECC RDIMM modules rated at 6400 MHz with CL52 latency and 1.1 V operation. It is built for the Supermicro Hyper SuperServer SYS-222HA-TN and targets administrators who need registered, error-correcting memory for production workloads. The 2Rx4 organisation and 288-pin form factor match the platform's registered DIMM slots.

Straightforward DIMM installation

The modules slot into the server's 288-pin RDIMM sockets without tools; the key notch prevents misalignment. Registered buffering and ECC require the motherboard memory controller to support both features, otherwise the system will not post. Mixing ranks or speeds across channels can degrade stability, so populate identical modules per channel as the manual directs.

Verify registered ECC support first

Confirm the SYS-222HA-TN BIOS revision lists DDR5 6400 MHz RDIMM compatibility before ordering. The platform must accept 1.1 V registered ECC DIMMs with a 2Rx4 layout; consumer UDIMMs or non-ECC modules will not function. Check the maximum supported capacity per socket and total system limit in the vendor documentation.

How it compares

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

Price $8,507.99
Pricier than about 85% 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 $33.23 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 numberMR51200-724K2
Total capacity256 GB (2 × 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 items256 GB (2 × 128 GB) DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How do I verify the NEMIX RAM DDR5 6400 kit is running at CL52 1.1V on my Supermicro SYS-222HA-TN?

Enter the BIOS after installation and confirm the memory speed shows 6400 MT/s with CAS latency 52 and voltage 1.10 V.

What does the MR51200-724K2 package include and do I need extra parts?

The box contains two 128 GB DDR5 288-pin ECC RDIMM modules totalling 256 GB; no additional components are required for installation.

Should I choose the 256 GB (2x128 GB) CL52 kit or a different capacity for the SYS-222HA-TN?

Select the 256 GB CL52 1.1 V kit when your workload needs maximum registered ECC capacity at the validated 6400 MT/s speed.

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