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Green printed circuit board with 288 gold contacts and black memory chips on both sides

NEMIX RAM

NEMIX RAM 128GB DDR4 3200MHz PC4-25600 2Rx4 CL22 1.2V 288-Pin ECC Registered RDIMM Memory Upgrade

SKU CH-3MC7-RAVJ1

128GB DDR4 3200MHz registered ECC RDIMM built for the Supermicro X12SPA-TF motherboard

  • Total capacity128 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered

Size 128GB

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  • 128 GB capacity supports large workloads
  • DDR4 3200 MHz speed delivers rated throughput
  • Registered ECC architecture prevents silent data corruption
  • 2Rx4 CL22 1.2 V matches controller expectations
  • 288-pin RDIMM form factor fits Supermicro X12SPA-TF

Exact-Match Server Upgrade

This NEMIX RAM kit delivers 128GB of DDR4 3200MHz PC4-25600 memory in a single 288-pin RDIMM. It operates at 1.2V with CL22 latency and uses a 2Rx4 registered ECC configuration designed for the Supermicro X12SPA-TF motherboard. The module arrives new and ready for installation.

For Verified Platform Builders

This memory suits administrators upgrading or repairing the specific Supermicro X12SPA-TF platform where the board's population rules call for a registered 2Rx4 DIMM at this speed and voltage. Builders working with consumer desktop boards, laptops, or servers that require unbuffered UDIMMs or SODIMMs cannot use this module. Systems limited to lower maximum capacities or different rank structures should look elsewhere.

Capacity and Headroom

The 128GB density provides substantial headroom for virtualisation hosts, in-memory databases, and heavy multi-tenant workloads that benefit from maximum DIMM-slot utilisation. Registered buffering allows full-speed operation across all populated slots without loading down the memory controller. Workloads exceeding this single-module capacity or requiring higher frequencies than 3200MHz will need a different solution.

How it compares

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

Price $836.99
Pricier than about 59% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $6.54 per GB
Cheaper than about 60% 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 nameDDR4 ECC RDIMM Registered Server Memory
Part numberMR25600-724K1
Total capacity128 GB
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB DDR4 3200 MHz PC4-25600 2Rx4 1.2 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Does my Supermicro X12SPA-TF motherboard need to support 288-pin DDR4 RDIMM modules for this 128GB kit to work?

Yes, the X12SPA-TF requires 288-pin DDR4 RDIMM modules; this kit matches that exact form factor and will not fit UDIMM or SODIMM slots.

Can I mix these 2Rx4 registered ECC modules with existing 1Rx4 or 2Rx8 RDIMMs on the same X12SPA-TF board?

Mixing ranks is possible but the board's population rules dictate slot order; consult the motherboard manual for the approved sequence to avoid reduced speed or capacity.

How do I confirm the system sees the full 128GB at 3200MHz with ECC active after installation?

Enter the BIOS/UEFI on first boot and verify total memory shows 128GB, speed reads 3200MHz (PC4-25600), and ECC status is reported as enabled or active.

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