So I have got 3.9 stable at 1.3v {going to run a torture test overnight}
Tried to. Up it to 4ghz and it will post even at 1.3v but crashes during cinebench. Same happens al the way up to 1.35v it will post but crash at cinebench.
I'm well happy with 3.9ghz as it's my 1st time ever overclocking, even PC building however I feel like I could probably get it stable at 4ghz if I knew how. I'm assuming I could probably do it at 1.4v but I really didn't want to go over 1.35 if I can help it.
Cinebench score with 3.9ghz @ 1.3v is 1750