I suggest that you do
NOT use the on boot check box until you have ran your cpu at that frequency for at least a day or 2. And make sure to set up profiles, this will also increase battery life.
Which program are you using?
I purchased setCPU works great.
My settings are as follows(these may or may not work for you):
Main
max:729600
min:122880
Scaling
n demand
Profile Temp>26 Deg. Celsius
Checked audible warning
max:480000
min:122880
scaling: performance(not sure about scaling here)
priority:91%
Screen Off Profile
max:480000
min:122880
scaling
n demand
priority:58%
Charging Profile
max:729600
min:122880
scaling
n demand
priority:50%
battery< profile
battery< 10%
max:480000
min:122880
scaling: powersave
priority:75%
Defiantly figure out your max frequency 1st.
Then stay just under that frequency.
This way your not going to have to deal with lockups/freeze when your working the CPU hard.
!!Battery life is very important!!
Try to optimize it.
Even though your phone will go that fast doesn't mean you need it to, even though your car will do a 100mph does that mean it is good for it to stay floored all the time?
You just want it to run smooth and snappy through your normal activities.
To many people think Overclocking is for the fastest it will go.
Overclocking is a slow process find out where your phone is and workup one at a time. Once you start to get lockups or screen goes out I usually try it one more time and if it doesn't work I take two steps back and try it for a couple of days. presto!
Good Luck and have fun!