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Two green DDR4 UDIMM sticks, black chips, no heat spreader

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR4 3200 CL22 288-Pin UDIMM memory upgrade

SKU CH-SV75-78DFW

64 GB dual-channel DDR4 kit at 3200 MT/s with CL22 timing for ASUS ROG Strix B550-F Gaming WiFi II motherboards

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 64 GB total capacity with two 32 GB modules
  • DDR4 3200 speed rated at PC4-25600 bandwidth
  • CL22 CAS latency at 1.20 V operating voltage
  • 288-pin unbuffered non-ECC UDIMM form factor
  • Validated for ASUS ROG Strix B550-F Gaming WiFi II

What this kit delivers

This NEMIX RAM kit provides 64 GB of DDR4 3200 memory in a matched pair of 32 GB UDIMM modules. Each stick runs at 1.2 V with CL22 timing and uses a 2Rx8 organisation built from major OEM chips. The 288-pin form factor fits standard desktop DIMM slots and the kit is validated for the ASUS ROG Strix B550-F Gaming WiFi II motherboard.

Who this suits

Builders upgrading that specific ASUS board to 64 GB of non-ECC unbuffered memory will find a tested, plug-and-play solution. Systems that require ECC, registered modules, lower voltage than 1.2 V, or a heat spreader should look elsewhere.

The deciding specification

The 3200 MT/s speed rating (PC4-25600) is the single figure that determines whether this kit matches the motherboard's supported memory profile and the performance target of the build.

How it compares

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

Price $334.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $5.23 per GB
Cheaper than about 74% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineASUS Gaming Motherboard Compatible Series Memory
Model nameASUS DDR4 3200 MHz Non-ECC Unbuffered UDIMM
Part numberMD25600-328K2
Total capacity64 GB (2 × 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 systemsASUS
In the box
Included items64 GB (2 × 32 GB) DDR4 3200 MHz PC4-25600 2Rx8 1.2 V CL22 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

Will the 288-pin UDIMM modules fit the ASUS ROG Strix B550-F Gaming WiFi II motherboard slots?

Yes, the 288-pin DDR4 UDIMM form factor matches the four DIMM slots on that board, and the kit is validated for it.

What is the correct way to seat both 32 GB sticks so the system recognises the full 64 GB?

Insert each module vertically until the side clips click; populate the two slots recommended in the motherboard manual for dual-channel operation.

Does the lack of a heat spreader mean the chips need active airflow to stay stable at 3200 MT/s?

The modules run at standard 1.20 V JEDEC voltage, so normal case airflow is sufficient; no extra cooling is required.

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