Different generation, but I used a Pentium 2 Acer laptop, with 76Mb of RAM and a 4Gb of HDD, from 1999 through til 2005, when I'd finally cobbled together enough spare parts from other people for free to build my own AMD-based desktop.

It's what made me learn Linux, as it was so low-spec that Windows XP wouldn't run correctly on it. Slax was an excellent distribution, a Slackware-based Live CD that I forced to boot from the HDD despite it not really supporting it then. Prior to that I ran Damn Small Linux, and Windows 2000. No gaming for me, so I learned to build software instead!