It depends on the game.
I see a nice boost in forza horizon 5 with SAM on at my default resolution of 3440x1440p on my system.
Halo infinite also gets a nice boost from SAM and I play both games on a regular so it stays on.
There are some older game where it does hurt performance like forza...
I reapplied my previous PBO settings when I went from 220.127.116.11 to 18.104.22.168 I haven't noticed a drop.
my two best cores still hit 5.05Ghz with PBO+ 200
As for EDC i've always had it at 140 so that isn't an issue for me.
lol been doing bios flashes for like 25 years now I know to close all the windows and rub the magic 8 ball before I click on ok.
But i also remember doing them back in the day where it wasn't built into the bios and you have to download the correct tools to do so and there was less margin for...
I've looked at both myself.
however the gains I will see at 3440x1440 won't be that great and I don't really need the extra 4 cores the 5900X will provide so while very tempting I think I will save the cash to upgrade my 6800XT to a 7800XT :)