Hey guys, So I recently upgraded my PC and grabbed a pair of GTX780Ti's. I have been seriously contemplating having them water-cooled as I'd like to over-clock them. My main question was, is it possible to have water cooling solely for the GPU's, and if so, is it worth it? I had heard somewhere that you could use a H80i to water-cool a GPU, but i don't know if this is true? If not, what would you need for a custom water-cooled setup? Thanks EDIT: I should note that I already have a h100i for my CPU and my case is the Phantom 820 full tower gaming case.