How much bandwidth does 4:4:4 chroma use on the HDMI cable? My cables are 10.2GB max but I read that 2.0 is up to 18GB. Will I need new cables?
L * W * BITS * CHANNELS * hZ = Bitrate
3840 * 2160 * 10 * 3 * 60 = ~14.93 Gb/s
Yes, you'll definitely need new ones. Even at 8bit color it's 11.94, and this panel is 10bit with 12bit FRC.
Fuck, so the Titan X doesn't support 4:4:4 at 3840x2160 60Hz??
It does on Displayport, but since this TV only has HDMI 2.0 you're out of luck.