Dear Customer,
Do you have the PCB photo of the XTX merc 310 7900xt card?
We found it on the website, but not sure whether it is correct or not.
We compared the PCB of AMD Radeon RX 7900 XTX, they look nearly the same.
So maybe our water block BP-VG7900XTXRD is compatible.
Since we do not have this card, so we are not 100% sure it fits this card.
If you have any questions, feel free to contact us.
https://www.overclockers.com/xfx-merc-310-rx-7900-xt-review/
https://shop.bitspower.com/index.php?route=product/product&product_id=8403&search=7900