I have a Celeron 600 which is stabily overclocked to 900mhz. I overclocked with my friend's help by switching from 66mhz FSB to 100mhz FSB. I didn't even have to increase the voltage to make it stable. Its a good processor for $65 US. BTW it was $65 about 7 months ago so it should be cheaper now.
I really don't know anything about how different kinds of processors compare to each other.
I really don't know anything about how different kinds of processors compare to each other.