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Four green circuit boards with black memory chips and gold edge connectors

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR4 3200 CL22 1.2V UDIMM memory upgrade

SKU CH-RWK2-RB5J5

A 64 GB kit of four 16 GB DDR4 3200 CL22 UDIMM modules at 1.2 V for ASUS TRX40 motherboards

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 64 GB total capacity across four 16 GB modules
  • DDR4 3200 speed rated at PC4-25600 bandwidth
  • Low 1.2 V operating voltage reduces power draw
  • CL22 CAS latency for responsive system performance
  • Validated for ASUS TRX40 ROG Zenith II Extreme motherboard

Compatible ASUS TRX40 Upgrade

This 64GB kit contains four 16GB DDR4 UDIMM modules tested for the ASUS TRX40 ROG Zenith II Extreme motherboard. It targets desktop builders who want a matched set that installs without manual timing changes. Systems needing ECC or registered DIMMs should look elsewhere.

3200 MT/s CL22 1.2 V Specification

Each module runs at DDR4 3200 (PC4-25600) with a CAS latency of 22 at 1.20 V. The 1Rx8 organization and 288-pin unbuffered design match the motherboard's validated memory list, so the kit posts at rated speed without voltage increases.

Four-Module Kit Only

The package supplies exactly four 16GB sticks and no heat spreaders, cables or software. Builders who need a different capacity or prefer modules with thermal armour must choose another kit.

How it compares

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

Price $397.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $6.22 per GB
Cheaper than about 63% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineASUS Gaming Motherboard Compatible Series Memory
Model nameASUS DDR4 3200 MHz Non-ECC Unbuffered UDIMM
Part numberMD25600-618K4
Total capacity64 GB (4 × 16 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 rank1Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASUS
In the box
Included items64 GB (4 × 16 GB) DDR4 3200 MHz PC4-25600 1Rx8 1.2 V CL22 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

What does 3200 MT/s mean once the kit is installed in a desktop?

The modules run at 3200 MT/s when the motherboard enables the matching DDR4 profile, giving 25600 MB/s peak bandwidth per stick.

How does the 288-pin DDR4 interface limit this memory?

The 288-pin UDIMM slot caps speed to the DDR4 standard and only accepts unbuffered non-ECC modules like these.

Will the four 16 GB sticks fit a standard ATX board without a heat spreader?

Yes, each 288-pin UDIMM is low-profile with no spreader, so all four sit side by side in regular DIMM slots.

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