Power use is just one aspect, but its one that has been asked before i believe there was a previous question that involved [power use][1] specifically

This is unrelated but would be part of a wider answer talking about [power use as well][2]. 

I'm not sure there's a 'right' answer for this, which makes it somewhat subjective to me, bit i wouldn't VTC it if it gets reopened. 


  [1]: https://superuser.com/questions/243266/how-do-i-calculate-the-carbon-footprint-for-my-computer-usag
  [2]: https://superuser.com/questions/314630/do-aero-effects-in-windows-7-slow-down-the-computer/314634#314634