Boy I don't know. 5 years ago I needed some computing muscle. These days I don't do much but MS Office, watching videos and typical web browsing. Right now I have a 10" Surface tablet docked to two 27" monitors, a 32" TV via HDMI, 2 keyboards, mouse, Bose speakers, Seagate drives and who knows what else. I don't really know why either. It's just cool watching all this crap I don't use anymore come to life when I "snap" the tablet into place.
Will a phone with these functions do the same one day? I'm betting soon. I can't help but wonder what Apple's A9 chip could do if Apple had the same goal as MS. (A single OS layer).
That's exactly what the new Lumia's do. I watched the keynote. I skipped the microsoft band part but other than that it was pretty exciting.