first computer in house was 486. 16mb ram, and some mb harddisk BUT with a soundblaster something sound card.
First personal rig was a AMD Thunderbird, which cooler failed and in those times they didnt declock it just DIED. and thats the only specs i can remember of it.
First OC build was a pentium 4. 2,6ghz single core with a 25% OC. and a 9800GTX card.