One issue. The overvoltage option for 0.2v applies AFTER your cpu initializes. In my case, when I was testing for 2.7ghz dual prime stable today I found out 1.425+ doesn't have any differences in voltage for my opty 175 had to try it out and consequently did 1.225+overvolt and couldn't boot up unless I gave enough voltage (more than 1.225 in this case) or the whole thing wouldn't boot up. In my case this makes 1.425v-1.499v range useless for all the fine burning in I was planning to do. (also found out I am dual prime stable @ 2.65ghz 1.4v bios as anything higher didn't even register to begin with) It probably won't be big issue once I put it in phase but it is in lieu of some people who has had trouble booting up, etc. It probably is bios fix that can fix the issue but who knows. That v-core mod might come in handy instead of that overvolt option sooner than I thought. Other than that, it has been rock steady for me so far.