Overclocking FX57

[MRBARKER]

Having my FX57 for amost a year now i want to overclock it to 3.0 , is it worth it and would i notice to change , before i pass it down to my younger brother, i am using a standard Akasa AK856 cooling

I did overclock to 3GHz today but the temps when from 35-65 in a flash then pc locked up , i did change the voltage to 1.5 or should it be lower and the multipler to x15

Can anyone recomend any better CPU coolers or some better advice , if i added a better CPU cooler would i have to change the speed in the bios settings ?

 

[MRBARKER]

Thanks guys , i still think is worth keeping the FX 57 for a while , i will be handing down to my younger bro soon after my upgrade , if i add another cooler will i have to change fan speed or just live like it is ?