Here is everything I have connected to my PC that could draw power from the PSU:
Ultra X Connect 2 550W PSU Ultra Products X-Connect 2 550W PSU - Big Bruin
-Asus P5B-E Motherboard
-Intel Core 2 Duo E6600 @ 2400GHz
-2GB, trying for 4GB DDR2 800 Corsair RAM
-150GB Raptor HD
-IDE DVD-DL Burner
-2 case fans
-Creative SoundBlaster X-Fi Fata1ity
-Logitech MX518 Mouse and G15 Keyboard
That is just about all I can think of that is connected to my system. My monitors and speakers both have seperate power cables, so I am guessing they have nothing to do with power needed to run system.
Also, my video card isn't dead because it works just fine when I have only 2GB RAM. I will recheck right now to see if the RAM sticks are dead maybe, but I know that all the memory banks on the board are good, and my board is updated to the latest version.