use AMDoverdriver to find out how high it will go with out crashing.
it will outtune it for you but should beable to reach 4.8-5 eazy with that cooler. it is basicly like a mini AIO water cooler so you shouldnt have to worry about temps to much.
when it reches the limit say 4.7 or so. add voltage and watch temps you should be able to push it alittle more. like i said 4.8-5 ghz.