I have recently gotten into PC building so I am not that good at it yet. I was on a very tight budget for this build so I decided to upgrade this Gateway DX4300 PC that I had by adding a new hdd, gpu, and psu. The PC is a mini tower and the new gpu I got is massive(nvidia geforce gtx 580). The new psu I got also has many wires in a bunch of different places(EVGA 600W). The new gpu fits but it is taking up a lot of space in the PC and that makes cable management almost possible. I guess it goes without saying that I want to get a bigger case but Im not sure what size case that would fit my motherboard. So please let me know what kind of case to get (If I can get a bigger case) and if you could please link some options as well. Thank you.