shiftytech

To give you an example, I am running a Dual Core AMD processor, with 1 DVD burner, 2 internal SATAII harddrives, 7 chassis fans (with LEDS... one being a 200mm, the rest 120mm's), and a PNY 8800GT video card. This is all powered by a Dynex 400W power supply. My computer runs cool, and achieves great frame rates in new games at 1920x1200 resolution, on all high settings. I would not recommend this, but as you see it can be done. I am upgrading to a 700W however in the next few days (already purchased) simply for the purpose of being able to install more fans, and for future upgradeability(some of the newer processors on the market are capable of operating at an ultra low 45W and with advancements in RAM and GPUs the power required for high performance devices is actually decreasing... although when you are running 2-3 video cards in SLI you will want all the power you can get). What you might want to look into is an additional power device that is simply meant to power your video card (they do make them, they can power up to 4 video cards and provide up to 400W of power). They should be well under $100.