For a while i was wondering how simultaneous multithreading (SMT) or hyperthreading (HT) affects PC performance. Especially after Intel removed HT from i7 line of CPUs.
I disabled SMT in BIOS, ran tests, then enabled SMT, ran tests again, here are results: [https://i.imgur.com/XkrVbL3.png](https://i.imgur.com/XkrVbL3.png)
As you can see SMT has no effect on 1/2/4 core performance, which is a likely scenario during gaming.
In multicore test SMT adds 43% more performance, which is a likely scenario during production (rendering/compressing/encoding).
1. SMT/HT should not have impact on gaming performance in most of scenarios.
2. For production tasks (due to SMT) AMD offers a much better performance per dollar than Intel, as example [https://cpu.userbenchmark.com/Compare/Intel-Core-i5-9600K-vs-AMD-Ryzen-7-2700X/4031vs3958](https://cpu.userbenchmark.com/Compare/Intel-Core-i5-9600K-vs-AMD-Ryzen-7-2700X/4031vs3958)