Originally Posted by Mobile_Hackbox
If you take a look at this picture it shows the wattage your card uses: 280 Watts! With a motherboard and CPU and hard drives and fans you too close.
Hey dude........seriously you're reading that wrong. Anandtech is measuring the "Total System Power Draw", not the draw from just the card itself. Only Xbit Labs has done power draw testing on video cards themselves. There is no single card that draws more than 150W all by itself (that's the X1900XTX).
This guys PSU should be fine. I'm seriously guessing it's just his drivers. He most likely didn't do a clean uninstall from what he had before, directly installed over what he had before, or just didn't clean up the old drivers beofre installing nVidia's newest drivers which is causing the large performance drop.
Serien, download Driver Cleaner, then uninstall all current drivers, reboot, run drivercleaner on all previous drivers while in Safe Mode, then reboot and install the new drivers:http://www.drivercleaner.net/
Let me know how it goes.