Hi,
as stated in the compatible list, is the water block not compatible with any ASus Tuf gaming 7900XTX. The water block is only compatible with the MBA Asus Radeon RX 7900 XTX, RX7900XTX-24G, 24GB GDDR6 (90YV0IT0-U0NM00). For the TUF Series we don´t offer any water block.