New graphics card/ power supply and terrible FPS / load times

Hello,
My old card died so I bought a Palit GeForce GTX 460 768 Mb and a new power supply. I installed both and instead of my computer getting better performance it's getting lousy performance. Webpages load really slowly, it almost looks like im watching an image be scanned when I try to load a webpage. Also, any games I play I get terrible fps. When sit in the loading screen of counterstrike I get 500 fps, but once I open a few tabs or join a game my fps plummits to like under 100 fps, as low as 15 fps (keep in mind counterstrike is over 8 years old). I also loaded Starcraft II and was getting 4 fps at one point. Using the new drivers from Nvidias site actually made things worse than the drivers from the cd that came with the card.

I took out the card and put it back in and it ran more stable but still significantly lower than in should be. Is it possible my card is defective? That's the solution I'm leaning towards unless someone has a better suggestion

Some of My computer specs:

600 W psu
4 GB ram DDR2 dual channel
500 gb hard drive
Intel Core 2 Quad q9300 Quad-Core

Running on Windows 7 64 bit.

I have returned the card and gotten a new one and i still have the same issue. I have gotten as low as 1 fps consistently in starcraft. My old card was a geforce 8800 Gt and it ran all these games no problem.


I have tried 3 different drivers suggested by nvidia, upgraded my BIOS and still nothing works. Heeeeeeeeelp