I'm such a pessimist with AMD CPUs, I just have bad memories of power hungry, hot running chips with lots of microcode bugs and problems with ACPI etc...
Sounds to me like the original Phenom series of CPU's. They were very power hungry and ran very hot (140+ Watts at stock clocks)... the newer cpu's are a bit better, although they still lag in performance.
If AMD's Ryzen benchmarks are to be believed, that seems like it will change very soon though.
I think that statement applies to all vendors, generally.