Congrats on your new 9800 GTX+, the same card I threw in my 2nd Rig...greaqt Card for the $$$...I was totally impressed playing titles such as Crysis Warhead, FC2 etc...
Precision is a great OC'ing tool and a whole lot easier and less confusing the Riva (same developer)..many questions you;'ll have can be found here, including OC'ing anbd those Cards OC like the banshee, I know I had my Core running at 810 Mhz..can't remember what I had shaders and Memory at..also quite cool compared to my 280's..Max Temps under load 68c Fan speed at 60%...enjoy!
EVGA GeForce 9 Series