Hey roadworker,
Are you just testing, or are you looking to try and make the new changes permenant? If so, be sure to have some cooling options readliy available, because, as I am sure you already know, the more juice you pump into them chips, the hotter things tend to get... This does not only apply to your CPU, it applies to RAM, and everything else in your system...
So just be sure you have some cooling options ready to go...
Have fun and good luck!
-SlickVic78