#Brew install istats upgrade
#Brew install istats pro
#Brew install istats trial

I'm hesitant in changing OS settings on the kernel level which may break future upgrades. Thus far, I've only used the suggested Turboboost Switcher for monitoring the temperature and fan speed. This drains more power and produces more heat, and it could negatively influence the behaviour of the external monitor temperature problem. Intel uses Turboboost to overclock the processor, 2.6GHz boosted to 4.5GHz. The 2019 Macbook therefore got better fans to address heat concerns. The planned 10nm had to be postponed, and is not available in the Macbook.

When looking up the specs for the Core i7 version, it unveils 14nm for the chip. That means when kernel_task is on the top activity list, your system is actually consuming too many CPU cycles. One of the OS tasks is to schedule low resource tasks to throttle the CPU, it would otherwise overheat. The kernel_task process seems to consume lots of resources. $ sudo powermetrics -samplers smc | egrep -i 'Fan|CPU die'

Monitor thermal levels, temperature and fan speed on the CLI:.

#Brew install istats trial

Turboboost Switcher trial as a Homebrew cask: brew install turbo-boost-switcher.istat menus trial as a Homebrew cask: brew install istat-menus - after installation it asks for your root password to install additional components.Cancel the dialogue to just monitor read-only. Mac's Fan Control as a Homebrew cask: brew install macs-fan-control - after installation, it asks for root permissions to control the fan speed.You can monitor the behaviour by installing additional tools. You'll see the WindowServer task consuming the most CPU resources. Open the Activity Monitor with Spotlight/Alfred/Raycast, and switch to the CPU tab.

#Brew install istats upgrade

Spoiler: You'll need to upgrade to macOS Monterey. My solution is at the bottom feel free to scroll below. I've documented my entire research sourcing from multiple articles. Big Sur and Monterey made the problem worse, it seems to be a bug in the AMD driver. Problem: The AMD GPU drains the power source even when running idle. Resolution: 3440 x 1440 (UWQHD - Ultra-Wide Quad HD) The following displays are in use: $ system_profiler SPDisplaysDataType | grep -C1 Resolutionįramebuffer Depth: 30-Bit Color (ARGB2101010) The AMD GPU in use heats up to 75 degrees with the external display turned on.

#Brew install istats pro

In my case, the Intel Core i7 is accompanied by the AMD Radeon Pro 5300M with 4GB, more powerful than the iGPU Intel UHD Graphics 630 built into the processor.ĬPU temperature levels range from 75 to 100 degrees Celsius when under load, 55-60 when starting to work. When an external monitor is plugged in, macOS automatically switches to the more powerful graphics card. The problem is not new, many ideas and solutions are provided online. The external display plays a role in my workspace, as well as turbo-boost triggered from apps. After nearly 2 years of operation, the Macbook's heat output became worrying.