the first PC I bought myself had something like this: AMD K6 350MHz (@428MHz), 128MB RAM, 16MB graphics and 6GB HDD. I upgraded this PC until what I have now, but in fact there's nothing left from what I had then. Last thing I had from the beginning was the case, which I replaced about 3weeks ago
Before I had my own I used to use my dad's PCs, of which I don't know the exact specs. The first PC I remember here at home was one of those with a 2-digit LED screen showing the clock speed (first 80, later 99)