The new M4 chips have introduced power modes, including Low Power, Automatic, and High Power, in the Pro level chips for the first time.
In testing, it was observed that the Low Power mode significantly reduces performance compared to previous generations, with a 55% drop in multi-core performance on the M4 Pro Mac mini.
The performance drop is also present on the M4 Pro MacBook Pro, indicating a potential change specific to the M4 Pro chips.
It is speculated that Apple may have clamped down the cores in Low Power mode to optimize efficiency, resulting in a stronger impact on multi-core performance.