On Wednesday 25 May 2011, Jeremya wrote: Hi Jeremya, you're right in this case - given the much higher number of CPE devices in the end user hands and especially as most of them use really cheap (also bad) power supplies. But in generally optimisations on a server level are also important, if you have a few thousand servers than even small amounts fast add up. And for the whole internet it already uses siginifcant part of the power, close to 10% in the US to some research: http://hardware.slashdot.org/story/07/09/27/2157230/Internet-Uses-94-of- Electricity-In-the-US With regards to the research from Jan, the performance numbers are really impressive, great work! Cheers, Henning