Up until a couple of months ago, my main box was a P100@120. Been overclocking that one since August of '95 when I bought it. No fan, just a heatsink. I'm also still actively using a 486DX2/66 (recently upgraded from an SX25). But my main box is now a Celeron433@488, and while not the fastest, it probably isn't the slowest anmymore.