Originally Posted by xKrNMBoYx
I have a FX 8350, Asus Crosshair V Formula-Z, and a H100i. Not sure about you but I have cooling for my VRM and Socket. These are recent temps I got while running IBT Max. 4.8GHz @1.464v got me Max Core/Socket temps of 58C/52C. 4.9GHz @1.512v got 63C/59C. Another thing to note, .006v can make a difference in temps. For example I'm using offset voltages right now, and those 4.9GHz temps were with an offset of .243v. By raising the offset vcore by .006 (.25v) my max temps were 4-5C hotter. In my opinion if you need 1.5v for 4.8GHz then you will probably need more than 1.55v for 5GHz stable. For Vishera's you can use 1.6v and CPU should still last several years (without some unknown disaster) problem is being able to cool the CPU and I don't think an H100i is enough to cool voltages of an 8-core at 1.55v and beyond without going over the max recommended temps. People talk about chips dieing prematurely when using higher voltage but unless you plan to keep the CPU for 10+ years the CPU should still be alive and running well if you can keep it cool at 1.5-1.55v. Same can probably be applied with even higher voltage. AMD chose 1.5 or 1.55v as the max voltage for bulldozer but didn't say anything for Vishera. Unless the max voltage has changed dramatically from bulldozer to piledriver running 1.5 should be safe.
If I were to try predicting the outcome of you OCing to 5GHz stable I predict your temps rising by at least 10C IMO and that's at the 'least'.
I don't think temps will be an issue with my cpu as my max temp i was able to hit on prime95 after an hour of testing was 48-50C, i was just wondering about the voltages.