This is an interesting challenge, one i never looked into. Besides Kabini, check the new Haswell mobile chips and those compatible with more common microATX/ITX mainboards. The G3258 is a waste of power. Do you have the case already? It will limit motherboard and PSU choice. Yes i have a Case . And...

24x7 - Low Power Consumption – Internet Download Machine I want to build a System that has LOW POWER Consumption. Use: Mostly Downloading Stuffs , Might Host Own Cloud too , Email Clients , IRC Clients , Other Internet Connected Apps I was thinking of a Kabini System Athlon 5350 (25 W TDP) & Some AM...