According to a ASUS guy, who shows in this video how to OC on ASUS boards, 1.4 vcore is fine. He's OCing the 2600K to 4.8 Ghz, so if he does this to show how to OC, it is a pretty good sign that 1.4 vcore is safe. Why would they show OCing with a too high vcore, that would damage ur CPU?
What do u guys think of this?
But I would guess that he is a demo guy who gets more info from this forum and others than from a definitive conversation with people in the know from Intel.
You ask: Why would he say 1.4 if it could damage a chip? Because that is what he believes, but that doesn't mean it is true.
Besides, you can get to 4.8 at around 1.35.