Tony Phillips, a seasoned Microsoft Office user and writer for How-To Geek, discovered a hidden Windows setting that significantly improved his ASUS laptop's battery life. After trying common tweaks like dimming the screen and closing apps, he turned to a more obscure processor setting called Processor performance boost mode.
Modern processors can temporarily boost their performance above their base frequency, but this feature can also drain battery life. Phillips created a custom power plan that disabled this boost mode while on battery, keeping it enabled when plugged in. He then compared this custom plan to the default Balanced power plan in two 30-minute tests.
The results were striking. In the first test, the Balanced plan dropped 17 percentage points, while the custom plan only dropped 10 points, a 41% reduction in battery drain. In the second test, the Balanced plan dropped 16 points, while the custom plan dropped 11 points, resulting in a 31% reduction. On average, Phillips observed a 36% decrease in battery drain with the boost mode disabled.
Phillips noted that he didn't experience any noticeable slowdown during everyday tasks, though more demanding workloads might have been affected. He cautioned that these were short comparisons and not controlled battery-life tests, so results could vary based on background activity and workload differences.