Hi, Long time lurker maybe 3rd or 4th time poster! I happen to work for the company this guy bought a system through so I thought I would chime in.
No one saw anyone coming! You may not know the audio production market but it's not the same as your office or even your cad machine. There are no 64bit drivers for some important audio hardware and software, DSP expansion cards, Solid State Logic and Soundscape haven't updated their driver line yet, TC electronics are still in beta for some and these are major highend products in our field. 32bit compatability mode has no place for low latency audio work either. A lot of our users are still dual booting with XP and Windows 7, it's an area where you don't jump to the latest OS until your ready.
Oh and price up a similar machine form DELL or HP and it comes in much more expensive, so just setting the record straight!