In car terms, an enthusiast is someone who enjoys driving in cars regardless of speed. Also in car terms, a 'petrol head' or more commonly known as a speed freak, which is pretty self explanatory, is someone who enjoys going fast. Seeing as I use computers as a source of forums, music and most dominately overclocking and tinkering trying to get my parts faster and faster, I'd like to call myself a 15 year old PC speed freak.