After viewing this video and reading several articles and forum posts I attempted to overclock my 5600X using PBO. Coming from an overclocked Intel i5-2500K system this is definitely a different way of oc'ing.
I used AMD Ryzen Master, OCCT (CPU, small data test) for stress testing, HWiNFO64 for monitoring, and Cinebench for benchmarks.
I first tried using Ryzen Master with my 5600X and Asrock B550 Phantom Gaming 4 MB to overclock PBO. It sets the PBO Limits to the Motherboard Limits. I ran OCCT's CPU test small data set. CPU temp was high, 87.3C, and CPU max frequency was 4467Mhz. I am using a be quiet! Pure Rock 2 CPU cooler with 2 fans in a push-pull config. See comparison chart below for Cinebench results.
If I set PBO in my bios to Auto and run OCCT I get 4247Mhz, 1.074V, 66.8C. It sets it to the 5600X default PBO Limits PPT 76, TDC 60, EDC 90. See chart for Cinebench results.
I compared the Auto and Disabled settings to different Advanced settings. In the bios I set PBO Advanced settings PBO Limits to Motherboard, PBO Scaler to Auto, Curve Optimizer to negative 30, 30, 8, 30, 30, 30, Boost Override to 0, 50, 100, 200; and Thermal Throttle limit to Auto. I got OCCT errors in Core 2 down to -8, all others were ok at -30.
Comparison Chart
Setting the PBO Limits to Motherboard gave me some very high numbers, PPT 1000, TDC 250, EDC 270. When running Cinebench multi core only a fraction of these settings were used.
In PBO Auto mode the default 5600X PBO Limits settings were not enough when running Cinebench Multi core.
The PBO Auto and Disabled settings surprised me. I thought the Cinebench benchmarks would be much lower than the Advanced settings. Of course this is only one benchmark. Results may be different with others and games.
Except for a slightly higher Cinebench single core result for a Boost Override of 200 there was almost no difference in the HWinFO64 readings between 0 and 200 boost override.
Could it be the limits of my CPU or the Curve Optimizer set at -30, the max, for 5 of 6 cores, or is there something else I can do or not doing?