I currently own a PowerMac G5 DP 2.0ghz. It is so awesome!! That is…if this post was written sometime in 2003. Unfortunately it was written in 2008. The computer still performs great, the problem I have with it is the amount of power it uses. My handy dandy power calculator machine (Kill A Watt) shows that the PowerMac uses about 200 watts idle and about 300 watts full bore. The Mac Mini uses about 30 watts full bore! Benchmarks even show that the Mac Mini is faster. What’s especially funny is my PowerMac uses about 40 watts when it’s sleeping! I was wrong about this, it’s only about 10 watts.  In comparison, my electric heater uses about 1000 watts. I wonder how much savings I could get in a year from replacing my G5 with a Mac Mini? A few bucks? I’ll feel greener at the very least.