K10 clock editor (software OC) works pretty well.
I have an Asus lappy with an A-6 in it. Adjusted it from the stock 1.5 gig base with 2.2 gig boost to a 2.2 gig base with a 2.6 gig boost.
I only barely bumped up the voltage on it by .025v on the low end and actually was able to keep the top end the same while gaining a stable 400mhz gain.
My temps went up a few C idle but under load have been right in line with the stock performance.
As long as you don't increase the volts (by much, if at all) you shouldn't see large increases in temps that the cooling system can't handle. Given, this is just my experience with only a single laptop.