Mike I have ran this mobo since it came out and I have 4 of them and I love them but the guy is right about the set-up, You can build 2 rigs side by side with the same parts and they both will not run the same lol lol I have tried it... But my friend Tony from OCZ has got the set-up down!! I will tell you that it will run fasterat 1333mhz with tight timing then 1800 with loose timing. The mobo max out about 1800mhz. The CPU don't play nice with high voltage memory and also needs some CPU-NB voltage and speed. I found the (sweet spot) at 2800mhz CPU-NB@1.300v and the HT link at 2600mhz@1.250v NB-CORE 1.25v CPU 955 @3.8ghz 1.3625v and the 965C3 @ 4.0ghz at 1.41v. I run this set-up 24/7 and runs nice and cool 32c idle and 43c max load..