7600GS, some questions

I am making a new system and I figured a 7600GS would be good. Here's the one I'm getting: http://www.newegg.com/product/prod [...] 6814143054
I'm getting a 7600GS because the 7600GT is over a hundred dollars and the GS doesn't look too bad.
What kind of FPS can I expect from it along with an AMD Athlon 64 X2 3800+ (AM2) and 2 gigs of DDR2 800 ram? Mainly I'm just wondering about Counter-Strike: Source, since thats the main game I play.

I figure if my old AGP 5700Ultra can give me 35-45 FPS average with a Athlon XP 2000+, this could surely get me at least 80. Although, it's not a big deal, since you don't really notice much fps above 40.