Well, if you accept an asspull reasoning, you could guess a typical task consists of equal parts non-cpu dependent work (disk, network), which hasn't gotten fas

Well, if you accept an asspull reasoning, you could guess a typical task consists of equal parts non-cpu dependent work (disk, network), which hasn't gotten faster, single threaded work, which is allegedly twice as fast, and parallelizable work, which I assume to be infinitely fast. That gives us a timing of 1/3*(1+0.5+0) which is a 2x speedup, with the maximum achievable compared to the baseline being 3x. So no, you are right, your computer probably isn't that much faster in practice.