Hi; I've recently purchased a GTX 650 2048MB version and installed it in my Alienware X51, using the 330 watt PSU. I'm a tad concerned about potential overheating and damage to components. I've heard the X51's 330 PSU is more than capable of running up to the GTX 660, though I've also heard of major heating issues there. Have you had any overheating/power issues concerning a GTX 650 2GB version with an Alienware X51? Should I upgrade to a better PSU?