Dear Valeriy,
Have a nice day!
Would you send us the PCB picture of the KFA2 Geforce RTX 3090 Ti X 3FAN Black?
We have the water block for the GALAX GeForce RTX 3090 Ti HOF series.
Such as the following link. But we are not sure whether it is compatible or not.
So if you have the PCB, we will compare the pictures and reply to you.
shopservice@bitspower.com.tw
https://shop.bitspower.com/index.php?route=product/product&product_id=8227&search=3090ti