I have a friend in asia that's willing to sell me his i7 2600k ES D0. 5 Ghz at under 1.2v. D2s seem to do that at over 1.5v, if at all. Seems like a night and day difference to me, however I'm concerned about bugs. D0 is older than most engineering samples, typically D1. Then there's a total lack of warranty. Little torn here. Any thoughts?