My family laptop has Office Suite, 4 games (GTA IV, GTA San Andreas, CoD 4 and World of Tanks IIRC), a couple of accounting software for my family business and

My family laptop has Office Suite, 4 games (GTA IV, GTA San Andreas, CoD 4 and World of Tanks IIRC), a couple of accounting software for my family business and data (mostly pictures). Currently, they have used about 350 gigabytes (out of 500). I wouldn't call them power users at all, but they have used a lot of space. Keeping that in mind, I have concluded that for most of the regular Windows users, 200 GB would be easily filled. 20 GB might not be a lot, but it is 2x higher than my _whole_ Linux installation with all of the programs I have installed. And I would call myself a power user.