Why do people run/buy such overpowered computers just to run ubuntu?
Because their inner nerd appreciates the latest and greatest in hardware. The power could also be used for very resource intensive tasks like encoding, compiling, etc.
The moon will illuminate my room and soon I'm consumed by my doom.
I am wishing I got a more powerful setup. Encoding and other resource intensive processes still take longer than I would like
AMD Phenom 9500 Quad 2.2 GHz Asus M3N78-VM 4GB DDR2 32" HDTV montior
Multi-boot Win7, Ubuntu 9.10, Kubuntu 9.10
I also have resource intensive apps that I need to run, when I'm in Win, aside from games.
there are lots of factors to why somone picks a particular peice of hardware.
in my early days I prided myself on getting sub-optimal performance out of really terrible hardware (old, broken, or cheap). after a few years of that though, I came to the conclusion that to progress beyond a hardware junkie (eg development) I would need a solid box that didn't require monkeying with every 2 days, and didn't produce bizarre aberrations from the simplest of tasks.
personally I don't by high performance kit, I buy high quality kit.
Because very few people who build their own computers (which are usually the "over powered" ones) don't "just run Ubuntu". That, and everybody has their vice. Mine is electronics. Once you know how good something can be, why ever go back?
Before I had an old AMD Athlon Xp 1600+ and 1 gb RAM. It was too slow for me. Even when Ubuntu ran much faster than the previously installed XP.
Thats why I bought a new one. Why should I buy a slow machine when I can get a much faster one for just 50 Euros more?