Update:
After a lot of reading, then reading some more I found out that this AMD Ryzen 7 1800X CPU's technological innovations (Net Neural Prediction, Precision Boost, Pure Power, Smart Prefetch), part of the AMD SenseMI package, is active only when SMT is enabled. The only part of AMD's SenseMI package that will work w\o SMT being enabled is Extended Frequency Range.
Now I have been running this Ryzen 7 1800X CPU of mine w\ SMT disabled pretty much since I got it so I went in my system UEFI & enabled SMT then rebooted my box & went into MSI AB and reset my graphs to include the other 8 logical CPU cores in the same 2 CCX layout so now all 16 CPU logical cores (better thought of as 16 threads) are displayed. I then got on my CPU binary calculator to come up w\ the hexadecimal number to reapply CPU affinity to the same 4 physical CPU cores (will now be CPU cores 8, 9, 10, 11, 12, 13, 14, 15) then make the change in the location line syntax of my 2 Windows CMD-created shortcuts for AHIII to instruct Windows to set this up when AHIII starts up.
Then I went in & played AHIII Dx11 to observe this Ryzen running w\ all this active thru my overlay..............
Now I can say that I've witnessed this tech actually working under load & it's pretty impressive to me. My CPU's performance didn't drop off at all even while the CPU core speeds were cycling up & down on all the CPU cores that weren't carrying the game loads that kept the CPU usage above the 30% CPU usage parameter that I had set in Powercfg prior.....the 2 physical CPU cores that were being used above this threshold were continuously pegged at 3.7Ghz thurout.
This turned out better than I thought it would. Gonna run w\ this for a while to study it more..........
Will record a video of my Team Red box running w\ SMT enabled w\ RTSS\HWINFO32 overlay showing all this in operation in real time.
FYI........................