This is an overview of the Compaq Presario 425 from 1993, a 486sx processor-based PC, as well 486 and Overdrive chipped machines in general. Also compares its speed to the 386 range of machines. During the early 90's the 486 ruled all. But when things started progressing so quickly, it wasn't enough and Overdrive CPUs and such addons became quite popular. Also following in the Macintosh's footsteps came all-in-one case designs for some PCs. This is a response to some requests for footage of some of my systems "in action" instead of just a review. But that would be boring I think - so lots of facts, commentary and history as well.