Hey guys, it's my first post here and I'm looking forward to it! I'm in need of some guidance, I purchased a Gateway FX 6800-01e (i7 920 @2.66 ghz, mobo w/ x58 chipset, Radeon HD 4850, 3 gb DDR3, 500 watt power supply) and I'm looking to upgrade the power supply. My eventual goal is to add another card, probably another 4850. As a side note, I'm also taking suggestions about what to do here, could I run dual 4870s? What would I need to do? Back to the matter at hand, I'm not sure what kind of compatibility issues I might have in picking out a power supply and am a little intimidated. Does anyone have any good suggestions of a quality power supply that would push the 4850's?