Pretty sure the value is negative. You couldn't just throw them in the trash, you'd have to pay someone to take them. 350 nm process, which has gone down almost a factor of 100 by now (apparently 3nm is in prototype), and that's a linear measurement so it's really more like 10,000. Stunning. A silicon atom is about .1 nm in diameter, so a factor of 10 is about it for physical shrinking, definitely not a factor of 100. I hope that we'll be sitting here in 20 years amazed that petaflop computers drew megawatts of power!

What is interesting though, computer hardware from 2007 did not depreciate as much and probably would still be usable in 2030. I mean, I am sure you will be able to install Linux Mint or similar, and still use it.