Two reasons why Turbostat is my weapon of choice here. It's part of the kernel tools package which might be important if you don't have access to outside repos (think CoLo sites, etc).
The other reason is acces to tsc frequency which is pretty important in my line of work.
I'll definitely give s-tui a try. Looks really nice.
https://www.linux.org/docs/man8/turbostat.html