The only company that I am aware of that offers mod friendly warranties for their cards is EVGA. And even there you have to be careful about the card you buy I think. Also you pay a lot more to get this warranty. Otherwise ANY other manufacturer is just going to tell you NOT to mod the card. IF you want to water cool it you will have to live with voiding the warranty. Anyone who water cools basically ends up voiding the warranty on all the parts they cool!