The beta versions of macOS 10.15.3 tested in January 2020 included something called Pro Mode, which is designed to force a Mac laptop not to slow down in order to prolong battery life. This allowed apps to run faster while making sacrifices in other areas, namely battery performance and fan noise.
The feature never appeared in the public version of the update and has been gone without a trace since. But now 9to5Mac reports that references to something similar have been spotted in beta 8 of macOS Monterey.
High power mode – as the feature is now called – can be, as the name suggests, the opposite of low power mode that Monterey also introduced for the MacBook Air and Pro. Low power mode reduces performance to conserve battery life; this new mode will guarantee full performance of the application regardless of the power supply situation.
9to5Mac hasn’t been able to figure out what exactly changes the high power mode, but assumes it causes the MacBook to behave like it’s plugged into an external power source – running the CPU and GPU at peak performance – even when running on battery power. It can also turn on fans (if the MacBook has them).
It’s hard to say at this point whether Apple will keep the High Power Mode when Monterey goes public later this year, or ditch it as Pro Mode. For now, it is only available for beta testers; here’s how to join an Apple beta program.
This article originally appeared on Macworld Sweden. Translation (using DeepL) and additional reporting by David Price.