I didn’t think this would be possible, but it seems you can overclock a basic 1.25ghz MacMini to 1.42ghz, just by changing a couple of jumpers on the main motherboard of the device itself. For full details on the technical specifications, visit this page. You can find out how to get the case open with this video.

I presume it was more cost effective for Apple to include the same processor with all the machines, and just allow a simple switch to make the relatively small change in speed. Altering the jumpers in this way can effectively allow your MacMini to run at 1.5ghz, although it is a little more tempremental at that speed.

This looks like something I might be doing when I get one of these fellas ordered.