My PC I had for University, bought in late 1994, had 16MB RAM (which was huge), typical PC in that era ('92-94) was 4MB RAM, which was considered the minimum to run Window 3.1. I think the 8MB figures are a little wide of the marque, by 1997 most machines I saw were already hitting 32MB upwards, by 1998 many were hitting 128MB at the upper end to run Windows NT 4.0.