Dear Customer,
1. Do you have the PCB photo of Zotac RTX2080Ti AMP extreme?
https://www.guru3d.com/articles-pages/zotac-gaming-geforce-rtx-2080-ti-amp-extreme-review,5.html
If the PCB photo looks like attached link, sorry that we don't have the water block which fits for it.
2. We have the water tank such as BPTA-XYZ-RES-PWM-V2, which can be installed on the side of 240 radiator or directly to the case.
https://shop.bitspower.com/index.php?route=product/product&product_id=7250&search=XYZ