Pup-Sysinfo 2.8.3
CPU info for one of my other computers using the intel_pstate.
It too now shows all the info and it seems to be correct.Intel(R) Core(TM) i5-6400 CPU @ 2.70GHz
Max Speed: 3300 MHz
Current Speed of Core 0:3224 MHz, 1:3180 MHz, 2:3199 MHz, 3:3182 MHz
Core Count: 4
Thread Count: 4