I'm musing the possibility of upgrading part of my system in the next few months. Basically, I want to achieve better minimum gaming frame rates in the latest games and perhaps have DX11 compatibilty, although that still aren't many games that really use and benefit from it. But I'd still like to have it. My system at the moment (the main bits relevant to this) E8500 3.16GHz dual core CPU at 4.11GHz 4GB (2 sticks) OCZ Flex 2 PC2-9200 (1150MHz DDR2) GTX 285 Corsair HX850W PSU 1920x1200 LCD monitor I would be looking to spend around £300-£400 and I'm wondering if I'd be better off upgrading the CPU to a quad core i7-something, mobo & DDR3 or get a GTX 580. I'd like to get CPU & GPU of course, but that's just too much money to shell out.