I've tried to make a very rough inference based on John Carmack's statement along the lines "at one order of magnitude improvement on today's GPU's we'll start

I've tried to make a very rough inference based on John Carmack's statement along the lines "at one order of magnitude improvement on today's GPU's we'll start seeing it in real things, and at two orders of magnitude it'll get competitive in games" (http://youtu.be/P6UKhR0T6cs?t=1h4m30s http://youtu.be/P6UKhR0T6cs?t=1h4m30s). (some ninja edits)