Constant Max TurboBoost Frequency Without BIOS

I currently have a Dell machine with Dells limited BIOS. It doesnt let me choose CPU OC settings. It only allows me to enable TurboBoost. Is there a way I can force the max TurboBoost frequency constantly on the CPU via software or registry?

Windows 11 27774
i7 7700
Radeon 5500 XT

this link and registry setting will enable the settings in advanced power management so you can enable or disable CPU Turbo Boost.
the setting takes affect immediately.

then open the control panel > power options > change plan settings > change advanced power settings
then within advanced power settings > processor power management > processor performance mode
you can set your required Turbo Boost settings there.

best of luck, Steve ..

Im using the "Ultimate Performance" power plan. I found out i needed to enable SpeedStep for the TurboBoost frequencies to kick in. my i7 7700 now runs at 4ghz compared to 3.6ghz like before. its rated to run up too 4.2ghz and im trying to figure out how to get it at 4.2ghz max TurboBoost frequency.

Add the following line in Terminal (as Admin)

powercfg -attributes sub_processor perfboostmode -attrib_hide

Then go to Power Plan and set the Processor Boost Mode to the flowing:

both "efficient aggressive at guarenteed" and "aggressive at guarenteed" keep me locked at 4ghz. it was on "aggresive" prior to changing the setting. could it be a bios limitation?