I have achieved a nice little overclock on the AMD 3.8/4.2 quad 5800k at 4.8ghz. The motherboard is an MSI FM2 A85XA-G65. I got this on the stock heatsink fan. The settings are 102x44 and volts at 1.5. I did not run run it long. Temp seemed to stay a 61c. I believe this temp is ok by AMD standards. Better cooling might get me more! This is the highest I have gotten. And it booted into Linux Mint 16 Cinnamon just fine. Sorry about lack of detail. I got excited and had to post.