You won't loose your warranty updating your bios. Aslong as your careful and follow their instructions it will go well. The first thing I do when getting hold of a new machine is flash ot the latest bios. Can you use cpu-z and take pics of each of it's tabs and I can help you with setting the bios up.
Seriosly? The pictures look the same.
Are you overclocking your video card as the last cpu-z pic is saying the gpu core is over 1000mhz. IIRC the 4650s core should only be 600Mhz.
Not doing that, don't even know how. I know ati catalyst control center has a overdrive option, but its not on.
http://i52.tinypic.com/fcmkgj.jpg