mcnumpty23 :
stock cooler should be good for 4ghz to 4.2ghz range
over that then get aftermarket cooler
I agree^
To my mind a simple $30 cooler like a cm hyper212 or Xigmatek gaia is a good idea anyway.
It will keep your pc quieter under load and let you oc higher.
Backplate mount is easier and more secure too.