Hello guys, long time lurker new user here. Just thought I'd post this here because I'm helping a friend of mine look for the most energy efficient Intel processor out there for desktop PCs. He's not too worried about performance as long as it can handle daily business tasks and whatnot since it's for a work computer. I've searched on Google, and most of the results returned with Haswell. However, we want more opinions regarding this subject, as well as if anyone else thinks there's a more efficient Intel chip.