I've read multiple articles about how Microsoft will be updating Windows 10 this fall to make use of speed shift. Has this been updated yet? Should I enable it? Or will they end up releasing the update very soon?
I believe Speed Shift may already be supported under 10576 and 14393. The fall update you are referring to is the one from November 2015.
Speed shift ( or hardware P-states) requires 3 thing: A compatible cpu: skylake and up and most likely Zen and up A compatible os: modern Linux or win 10 10576+ Bios support: you must enable an option called "hardware p-state support" in your uefi. Sadly currently AFAIK only Msi boards expose this option to the user. BUT with a bios editor you can force the option to enabled.
How did you get it to work? I changed the registry entries from mbk's thread and they're already enabled after showing up in power options but hwinfo64 still shows SST with a red color.