I'm sorry to be an arse, but I'm really annoyed because I bought my computer in parts (this was about 2 months ago) and I got everything and it was all good. But then I realised the board I got wasn't compatible with Crossfire, and I have ATi, and they do the same motherboard in both SLi and Crossfire, so what a wally I look like. So I'm also wondering, if I wanted to get two graphics cards, whether I should change the motherboard and get another graphics card .. or later on buy another 2 Nvidia gpus which I think would kind of outdate the motherboard as well though ... Also when is it worth starting to get 2 gpus? Thanks.