suggest looking at multiple web site regarding the subject before doing anything
https://www.bing.com/search?q=how+to+overclock+amd+a8-7600&form=EDNTHT&mkt=en-us&httpsmsn=1&refig=0a8d8dabcba44e5ad077d9e759df9b47&sp=1&qs=SC&pq=how+to+overclock+amd+a8-7600+&sc=4-29&cvid=0a8d8dabcba44e5ad077d9e759df9b47&cc=US&setlang=en-US