I was mentioned that using a G 10 is not a good idea.... "The best alternative is the NZXT G10 GPU bracket which adapts any water cooling unit with an Asetek design (round pump/base) for video card use. It ships with its own fan to cool the VRMs but unfortunately in our case, the fan would have been...

Instead of water-cooling the GTX970.... would a better alternative be to get a reference styled GTX970. It would suck in air from the bottom and force it out of the case reducing overall temps, and having a lower Idle db since the GPU fans get activated at 60oC ?? Let me know what you think. example...