Whats the best CPU choice for Oculus - threads vs raw speed?

I was reviewing the Oculus Connect video: Integrating the Oculus Rift into Unreal Engine 4 and at one point Nick Donaldson mentioned that they had Xenon’s for development, but wanted faster CPUs and went with “commercial” CPUs. So I’m assuming that given a choice for “optimal” Oculus playback - assuming you already GTX Titan II or equivalent - you’d want to focus on raw CPU speed, followed by # threads.

Sooo, do I want to get

  1. an Intel 3.0GHz Core i7-5960X , 8/16 threads, 20MB cache, or
  2. an Intel 3.5GHz Core i7-5930X , 4/8 threads, 15MB cache, or
  3. an Intel 4.4Ghz Core i7-4790K, 4/8 threads, 8MB cache

this is for my Oculus /UE4 dev machine for the next 12-18 months.

The end goal is the most frames per second when it comes down to it. While it will change over time, it is generally considered that games nowadays do not use more than 4 cores/threads. Look at gaming benchmarks for the cpu’s you mentioned and pick the one with the the best results to dollar value. However, from a development standpoint, doing lighting builds etc… is a highly threaded app, so more cores/threads would be beneficial. Either way, I work on a i7 4710hq, and has no problem keeping up when paired w/ my gtx980m. Hope this helps