If it ain't crashing and running stable TEMPS and FPS then yes it is a safe overclock if it ever crashes your computer gives you blue screen of death or some ordeal get rid of the overclock but it should run perfectly ok
If it ain't crashing and running stable TEMPS and FPS then yes it is a safe overclock if it ever crashes your computer gives you blue screen of death or some ordeal get rid of the overclock but it should run perfectly ok