i have a pc with an asrock am3 mobo with 16gb of ddr3 ram and a fx8320 overclocked to 3.85 i wanna buy an 580 8gb a 500 watt psu a $20 ssd and a cheapo hdd a n $80 (or so) case (including fans) is it worth it? and how much do you think i could sell it for in a fairly wealthy area (it will probably be local)