I want to get my CPU to at least 4gh, but so far I've only been able to reach 3.975. It's starting to feel like I've hit the ceiling seeing as I've pushed it to 1.3500v. Granted, I'm happy that I was even able to push it this high, but I've seen other people push it to 4.1 and be stable on air so I was wondering if anyone had thoughts on how else I could approach it. (I'm a noob at overclocking).