Need a quick help with my HP Pavilion 500 Pc series I had this for a while and I want to upgrade my GPU and PSU. only thing I wanna know is what gpu is compatible with my AMD A8 6500 and what PSU can support the new GPU if you guys can suggest me one it would be a great help cause im still a little new to the PC world. im open to all sugestions if you guys have any for my desktop.