your in luck unless you have the stock cooler on it you should be able to do 4.6GHz easily just experiment as the computer wont start and it will go back to bios asking to restore defaults or enter bios if you mess up. gotta love gigabyte. this i5-3570k is my first oc and i got it to 5.0GHz but i have a custom water loop. i hit 5.2GHz but brought it down as my loop cant handle the temps. but just watch your temps and be sure to add enough vcore to be stable. you have the right mobo for it. Piece of advice google the oc's for the cpu and look at the vcore settings and the clock speeds they have on their rigs and it gives you a reference point to start with. just dont go off the settings from a asrock as they have had reporting issues. and dont use a asus mobo's settings either as they seem to oc with less vcore than gigabyte mobo's. If you have a gpu then set the cpu's gpu clock down to 400 and that will drop some heat for you as that was the only thing they really made better on the 4th gen cpu's. all they did was increase the gpu power which other than the the max tdp being increased is as a result, tends to be worthless for most as we use nvidia or amd cards. they may have changed other things but i haven't notice anything yet.