[sadpanda]

it's marketing lies and math tricks.

80AGB (actual GB) = 80*1024*1024*1024 = 85,899,345,920bytes

80MGB (marketing GB) = 74.5GB*1024*1024*1024 = 79,993,765,888bytes

right click on your 80GB drive and go to properties in explorer, i bet it says 74.5

2^10 = 1024, there's a reason everything in computers is a power of 2, but i won't go there ^_^

 

[sadpanda]

if that's the case, why not put "55.8" on the box? people won't question if all the boxes say 55.8. but some marketing guy said "we can just say 60 and technically we won't really be lying! we'll just play dumb. and then our drive sounds better than theirs!" and thus everyone did the same.