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Four green DDR4 UDIMM sticks without heat spreaders

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR4 3200 CL22 2Rx8 1.2V 288-Pin UDIMM Kit ASUS ROG Strix B550-F Gaming WiFi II

SKU CH-YAZQ-J8EV7

64 GB DDR4-3200 CL22 kit of four 16 GB UDIMMs validated for the ASUS ROG Strix B550-F Gaming WiFi II motherboard

  • 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 for demanding workloads
  • 3200 MHz DDR4 speed for responsive performance
  • CL22 latency balances timing and stability
  • 2 V operation reduces power draw
  • 288-pin UDIMM form factor fits desktop motherboards

Capacity and platform match

This 64 GB kit contains four 16 GB DDR4 modules rated at 3200 MT/s with CL22 timing. It is validated for the ASUS ROG Strix B550-F Gaming WiFi II motherboard and runs at the standard 1.2 V without XMP configuration.

Thermals noise and power

The modules operate at 1.2 V and carry no heat spreader, so they rely on case airflow for cooling. At stock speed and voltage the power draw is low and the parts run silently because there are no moving components.

Build quality and daily handling

Each stick uses a standard 288-pin UDIMM form factor with a 2Rx8 organisation built from major OEM DRAM chips. The bare PCB fits tight DIMM slots and leaves full clearance for large CPU coolers or multi-slot graphics cards.

How it compares

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

Price $409.99
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 $6.41 per GB
Cheaper than about 61% 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 numberMD25600-628K4
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 rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASUS
In the box
Included items64 GB (4 × 16 GB) DDR4 3200 MHz PC4-25600 2Rx8 1.2 V CL22 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

How do I install the 4x16GB 288-pin DDR4 UDIMM kit on the ASUS ROG Strix B550-F Gaming WiFi II?

Power off, open the case, align each module notch with the slot key, press down firmly until both side clips click, then verify 64GB shows in BIOS.

What maintenance will the non-ECC unbuffered DDR4 modules need later?

No scheduled maintenance is required; if a stick fails, replace the faulty 16GB module with another DDR4 3200 CL22 2Rx8 1.2V UDIMM.

What limit appears first under sustained load with CL22 1.2V DDR4 3200 memory?

The CAS 22 latency at 3200 MT/s is the primary timing ceiling; thermals stay low because the kit has no heat spreader.

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