I just woke up, anyone else want to take a stab at this?
Look at your picture again. Do you see where the CPU speed is 800MHz? This is because your bus speed is 200MHz, and your CPU multiplier is 4x. (if you don't know what it is, read this. http://en.wikipedia.org/wiki/CPU_multiplier
) My worry is if your computer/bios doesn't know what chip it has, it might not use the max multiplier that your chip should use which is 16x.