performance on quad core i7s

Are the 6+ core chips going to be necessary for good performance in the long run? I see a lot of the videos running on Intel's HEDT chips and they are running much better than I'm able to get with my 7700K (unless something's configured wrong on my end). I realize the PS3 has more than four CPU components to emulate, but I'm not sure how many threads rpcs3 is using.

With Ryzen 8-cores and upcoming Intel mainstream chips reportedly moving up to 6 cores (finally) it probably won't be an issue in the long term it's just something I'm curious about.