So, I figure I will address the i3 outrage here. People don't give i3's enough credit. My secondary system uses a 4th gen i3 (a 4160). I can say with certainty it is a very effective chip. Games actually make use of the HT most of the time, which, if it was faster than 3.6GHz, would put it in the same ballpark as many i5's. Only one game so far has balked at the i3 and refused to play, and that was the recent release of Shadow Warrior 2. A patch fixed that within 10 days, and now it works great.
Right now, my i3-4160 is pushing an R9 380x. That's a great pairing. I've also used it with a GTX 970 and a GTX 980 with very good results. Only a few times have I seen anything above 70% CPU utilization. Usually it is across both real cores and the two virtual cores. This tells me that it is a very capable CPU, that is meant for budget situations, but it is nothing to laugh at. No, you would not pair it with a GTX 1080.
Based on my above experiences showing it to be a very capable, low power CPU, I would welcome a 4GHz i3 that can be further overclocked. I call that SWEET!