How big a case needs to be in order to fit in this monster.I know for a fact that my case's length is 500mm and the gpus to be 309.The drawback is that I'm not close to my PC right now(I'm actually towns away) so I can really take the ruler and measure for myself, so id appreciate it if anyone had the experience of the same dimensions.I do realize that cases differ so whoever has my numbers, help pls.