[PavlovsCat]

When I use the on-board "sound card", I get to hear... something (my CPU? memory access?) that is directly related to stuff going on. I.e. Running some programs idly in the background gives a certain static fuzz, files being read are shorter or longer bursts of noise, moving windows around sounds a certain way etc, anything involving the GPU is even louder, and so on. It's obviously annoying, because it's certainly not filtered to sound pleasant, but also kind of fascinating.

[randyrand]

When im running OSX in a VM I can actually hear the sound of the typing cursor flashing...I still have yet to figure ot what it is. It is super faint, can only be heard in complete silence.Sort of a ticking noise.