Morning, Crunchie.
That is a really good guide...it's one of two that I kept re-reading...and re-reading..and re-reading... ...I downloaded Clockgen and cpu-z from there.

I also found this nifty calculator at the AMD processor forum: http://www.blurbdesigns.com/OcCalc/calc.htm
This thread contains a lot of the same info as the other guide...
http://www.ocforums.com/showtime.php?t=364233