I'm not sure what you're asking - you want all cores to run at max speed, or do you want high-clock single-threaded performance when only using a single core? I

I'm not sure what you're asking - you want all cores to run at max speed, or do you want high-clock single-threaded performance when only using a single core? If it's the latter: http://agner.org/optimize/blog/read.php?i=838 http://agner.org/optimize/blog/read.php?i=838 "Test results for AMD Ryzen": > The Ryzen is saving power quite aggressively. Unused units are clock gated, and the clock frequency is varying quite dramatically with the workload and the temperature. In my tests, I often saw a clock frequency as low as 8% of the nominal frequency in cases where disk access was the limiting factor, while the clock frequency could be as high as 114% of the nominal frequency after a very long sequence of CPU-intensive code. Such a high frequency cannot be obtained if all eight cores are active because of the increase in temperature.