Apple brings 'High Power Mode' to 14-inch MacBook Pro

AppleInsider

Previously exclusive to the 16-inch MacBook Pro, Apple's performance-boosting High Power Mode has now come to the new M3 Max edition of the 14-inch MacBook Pro.

M3 MacBook Pros

High Power Mode is an option that was introduced for the M1 Max 16-inch MacBook Pro, shortly after its original launch in 2021. It's intended as a setting that allows a user to run the device at its maximum speed when performance is needed for, say, graphics intensive work.

By default, the 16-inch MacBook Pro and now 14-inch MacBook Pro can automatically run at these speeds anyway, but it's macOS that determines whether its necessary. With the new setting, the user can elect to drive the device at this maximum speed.

Whether or not it makes any visible difference depends entirely on the work that the MacBook Pro is being required to do. The new option for the 14-inch MacBook Pro was spotted by Jason Snell, who says the difference was negligible in his testing.

"I didn't actually find it made much of a difference in the tests I was running, but it sure did make the fans kick in at a very loud volume," he wrote. "With the exception of using some heavy CPU tasks in High Power Mode, the fans on the MacBook Pro were either silent or, in some heavier loads, audible but not obnoxious."

"But if you stress things out enough in High Power Mode, your laptop will sound more like a hair dryer," he continued. "It's all in the name of high performance, since all High Power Mode really does is let your fans blow as loud as they need to in order to keep the processor cranking as hard as it possibly can."

Apple has previously said that High Power Mode can help with graphics-intensive workflows "such as color-grading 8K ProRes 4444 and 8K DNxHR video."

While the feature is available whether a user is on battery or connected to a power adapter, it's set up in the battery section of Settings. Under Energy Mode, users can choose Automatic, Low Power, or High Power, for each of the battery or power adapter situations.

High Power Mode is effectively the opposite of Low Power Mode, which was introduced with macOS Monterey to increase battery life.

Read on AppleInsider

tht

Has there been any quantification if high power mode results in cooler running chips. Certainly more fan noise, but does that result in cooler running chips for at least the same performance? Then, any quantification of increased performance and for what ops?

xyzzy-xxx

I would consider the need for high power mode a bug in Apple's task scheduling / energy saving features.

FileMakerFeller

tht said:

Has there been any quantification if high power mode results in cooler running chips. Certainly more fan noise, but does that result in cooler running chips for at least the same performance? Then, any quantification of increased performance and for what ops?

From the article, it would appear that the chips don't run cooler but are able to stay at the threshold temperature indefinitely. The OS will still intervene if the temperature gets too high but that should be a very rare event with the fans running at maximum speed. The feature is meant to prolong the time for which the chips can operate at maximum speed, not provide additional performance.

danox

Sounds like a gimmick used Intel, AMD and Nvidia, to cool down their barn burning chips when they try to put them into laptops.

dope_ahmine

Or the feature just controls the fans and nothing more. Fan ‘high power mode: On/Off.
💨😅

Marvin

dope_ahmine said:

Or the feature just controls the fans and nothing more. Fan ‘high power mode: On/Off.
💨😅

That's how Apple describes it:

https://support.apple.com/en-us/HT212852

"High Power Mode allows the fans to run at higher speeds. The additional cooling capacity may allow the system to deliver higher performance in very intensive workloads."

Without it, the chips throttle down performance (clock speed) when they are too hot.

M-series Macs are so efficient though that getting them to overheat and throttle down is not something that happens commonly and the gain would only be something like 10-20% after half an hour or something like that. If someone is rendering for hours at a time, a difference might show up, most tests of high power mode have done under 10 minute benchmarks that showed no difference.