I'm not entirely sure what you mean? How are you choosing?
The processor is whatever it is rated for, though that particular model doesn't seem to exist. Did you mean A10-6700? 3.7Ghz - 4.3Ghz
If you mean to change specific settings to get it to clock normally, then I suggest a BIOS reset to defaults.
If you mean one lists the processor at a different speed, then one of them is wrong. How are you checking?