What If: 8k Resolution

So Dolphin is pretty light on graphics cards, as compared to most PC games. But... what kind of hardware would it take to play a game in Dolphin at an 8k resolution (7680x4320)? Would the famed GTX Titan be able to do it? What about several Titans in SLI (four is the highest possible, I think)? And then... what if you wanted something like per-pixel lighting and full anti-aliasing? What if you wanted to run at a higher IR than 8k, like it's recommended to do if possible at lower resolutions? Does anybody have an estimate as to what kind of specs a video card would have to have to achieve all this?

But help the people who need it before you spend time answering this. It's (obviously) not as important. Just an enthusiast thread...