You mean 50$ Full Tower?, most mid towers require you to take the drive cage out for 5$ foot long cards. however i think if your gonna get a 590, your gonna need a more beefier Power supply lowest a 750 watt. but a 580 will be find on a 650watt. which is a good range of PSU's
------------------------------MY RIG: CPU:AMD Phenom II 980/GPU: EVGA GTX 670/Mobo:AM3+ 990FX Sabertooth/Ram: 8 Gigs of Kingston Hyper X/PSU: Corsair TX 750/CPU Cooler: Corsair A70/ Case: CM Storm Trooper Full Tower Reply to Rockdpm