Of course the early MSDOS PCs where loud and power hungry. I can't remember the specs but according to Wikipedia the IBM PC with a 80286 had a 192 Watt power supply. I don't remember if by then we had internal hard disks or we still had to buy a case as large as the one of the PC with a 10 or 20 MB disk inside. It was handy to raise the monitor further up.