After scathing criticism coming from GamersNexus's Steve Burke and Hardware Unboxed's Steve Walton, Principled Technologies has made statements and defended its i9 9900k performance study. The company said "we are confident in our test methodology and results" following an interview conducted by GamersNexus.
https://www.notebookcheck.net/Principled-Technologies-responds-to-criticism-of-its-i9-9900k-study.337908.0.html