Performance for a AMD Athlon 3200+ (Need help!)

Well, im a big gamer, i recently purchased a new video card, a nvidia geforce 6800 GS.
Well, ive noticed ive been getting...sub par performance, or at least not what i expected. Well, when i launched a game that i just bought (Fable: The Lost Chapters) It said that my computer was not running fast enough for the game, and i noticed it was reading my CPU was running at only 1000 megahurtz, im curious, could this be my problem? Could something somehow be holding my computer back? Do any of you know a way to fix this if this is the case? Or if not, any ideas on what my performance problems could be?

Ive defragmented, everything, even reformatted, i still have performance.
I apologize if this is in the wrong section, i wasnt sure where to post it.

What would i check in the bios? And im not sure what cool n quiet is.

Also, my computer is HP manufactured, and i remember my bios being..somewhat crappy, and the bios update on the main HP site didnt help. Is there anywhere else to get a BIOS update? Or am i so screwed that i need a new motherboard? -.-

My power scheme was already set to Energy Star.

your cpu and your video card should be able to play
the game just fine,
check your bios, go to start menu, right click my comp
and click on properties
it will tell you what your cpu is running
should be 2.0,

also what is your memory
512
1 gig?

In the control panel, power options change the power scheme.

THANK YOU SO MUCH. Man. It now says 2.00 GHZ.

Seriously, thanks so much. Best forum community ever!