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Four green 288-pin DDR4 UDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR4 3200MHz CL22 1.2V 2Rx8 UDIMM memory upgrade for ASRock B660M

SKU CH-1G8R-GEQZY

Four 32 GB DDR4 UDIMM modules totalling 128 GB at 3200 MHz CL22 1.2 V for ASRock B660M motherboards

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 128 GB total capacity across four 32 GB modules
  • DDR4 3200 speed rated at PC4-25600
  • CL22 latency at 1.20 V operating voltage
  • 288-pin 2Rx8 unbuffered UDIMM form factor
  • Validated for ASRock B660M motherboard series

128 GB kit for ASRock B660M

This 128 GB kit contains four 32 GB DDR4 UDIMM modules rated at 3200 MHz with CL22 latency. It is built for the ASRock B660M PG Riptide, Phantom Gaming 4 and Pro RS motherboards and runs at 1.20 V without ECC or heat spreaders.

Upgrade from lower capacity or slower DDR4

Replacing a smaller kit or slower DDR4 modules with this 128 GB set adds the headroom needed for heavy multitasking, content creation or virtualisation workloads. The jump is worth it when your current memory limits the number of concurrent applications or virtual machines you can run.

Fits four UDIMM slots on compatible ASRock boards

The kit occupies all four 288-pin slots on the supported B660M models and requires no extra cooling hardware. It frees the builder from mixing different module capacities or speeds and leaves the remaining system resources available for other upgrades.

How it compares

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

Price $762.99
Pricier than about 57% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $5.96 per GB
Cheaper than about 66% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineASRock Gaming Motherboard Compatible Series Memory
Model nameASRock DDR4 3200 MHz Non-ECC Unbuffered UDIMM
Part numberMD25600-328K4
Total capacity128 GB (4 × 32 GB)
Product type288-Pin DDR4 UDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL22
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock
In the box
Included items128 GB (4 × 32 GB) DDR4 3200 MHz PC4-25600 2Rx8 1.2 V CL22 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

Does the 288-pin DDR4 UDIMM form factor fit the ASRock B660M motherboard DIMM slots?

Yes, the kit uses the standard 288-pin DDR4 UDIMM design that matches the four DIMM slots on the ASRock B660M boards listed.

What is the correct way to seat all four 32 GB modules so the board recognises the full 128 GB?

Insert each stick vertically until the retention clips click on both sides; the most common mistake is stopping when only one clip engages, leaving the module partly unseated.

Will the modules need any firmware updates or heat-spreader maintenance over time?

No firmware updates are required for memory, and the kit has no heat spreader to clean or replace; the modules are designed to run at 1.2 V for their service life.

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