A HP ex development 386 with 16mb ram and a 25mb hard drive
That lasted me about a year and a half from the age of 3 till dad got me a better version of his monster dual pentium workstation (also a pre release development of the original pentium proc's which I wasn't allowed on despite having a cd drive and a sound card for unix...). My dual pentium work station was amazing as it was dual pentium pro (no idea which lab he nicked it from but sco at the time had these thrown at them) which was better but not my long term pc so instead I had hp vectra p133.
Warm memories of the vectra, that was 4 years of cd based gaming bliss (including finding out I knew more about windows than dad did).