Oops I was thinking AZ-11. I even own an SD-11. In that case you need an overclocking card to go on the gold fingers of the chip. Or you can be brave like me and solder a bunch of smd resistors to change the speed and voltage. Take a look at http://www4.tomshardware.com/cpu/99q3/990826/index.html for the athlon clasic overclocking guide. What I did with my athlon 500 and SD-11 was to use an overclocking card to see what it would run at and then solder the resistors to their corrisponding places.