Got my E8400 yesterday up and running with the Beta 16.04 bios. Bios 14 does work but only issue with it is that tempatures are really screwed with it. Beta 16.04 is ok with tempature readings but its still messed up.

4.05Ghz w/ 1.37V Bios (1.21V CPU-z which I've found in the past with my E6400 is almost dead on for proper voltage reading amazingly). I get roughly 50-52C Load temps.

My CPU last night was testing at 1.35V Bios (1.19V CPU-z) and failed after 1 hour but not sure if it was CPU voltage or if it was the northbridge voltage that was causing the issue so I raised both and ran fine. Results below.