I know everybody is already insulting your $300 power supply, but I need to add to it.
Not only did you spend $300 on an unnecessary wattage power supply, but you bought one made by fucking ultra.
Ultra psus are known for one thing, and one thing only: going out in a blaze of glory and taking the rest of your components with it. So you'd better go spend a few more bucks on a fire extinguisher and some homeowners/renters insurance.
Also, you paid a fuckload of money on a motherboard chipset...that uses ATI Crossfire. You can't even go SLI to use a bit more of the $300 you wasted on the power supply.
Hey fucktard, if you had any sort of reading comprehension at all you'd know I ditched the PSU. I really fucking value the opinion of someone who can't even read a 2 page thread on TW.