# Donate
## Donate on [Buy Me a Coffee](https://www.buymeacoffee.com/nickjohn):
(Open on your phone to pay with Apple Pay or Google Pay)
[](https://www.buymeacoffee.com/nickjohn)
## For Chinese users, scan with WeChat:
# Introduction
Energy Star X leverages Windows 11's [EcoQoS API](https://devblogs.microsoft.com/performance-diagnostics/introducing-ecoqos) (aka "Efficiency Mode") to throttle background applications to improve battery life and system thermal. It will not throttle foreground application to ensure user experience.
This app is a GUI version of the open source software [EnergyStar](https://github.com/imbushuo/EnergyStar), developed with Windows App SDK (WinUI 3).
# Requirements
For the best result, you need:
## Software
- Windows 11 22H2 (Build 22621) or above
## Hardware
- Intel 10th gen or newer mobile processors
- AMD Ryzen 5000 or newer mobile processors
- Qualcomm mobile processors
This app can work on Windows 11 21H2 (Build 22000) and older hardware, but may not get the best result.
# Usage
Let it run in background in the system tray. You can choose to run it automatically at startup in settings page.
You can see a green leaf icon next to throttled background process in Task Manager's "Status" column.
# Known Limitations
- If you are using mouse-related software such as [Logi Options+](https://www.logitech.com/en-us/software/logi-options-plus.html), your mouse cursor may lag while moving. Please add these softwares to the whitelist.
- If you are using some taskbar enhancement software such as [StartAllBack](https://www.startallback.com), this app may crash when you hover over system tray icon.
- Child processes do not get boosted when the parent process receives input focus.
- System processes (which is Session 0) do not get throttled. Currently there are some assumption that non-user processes know what they are doing.
# Acknowledgements
- imbushuo: https://github.com/imbushuo
- App Icon:
- https://www.flaticon.com/free-icon/star_3103390
- https://www.flaticon.com/free-icon/accept_4303945
- https://www.flaticon.com/free-icon/pause-button_2285134
# How to contribute
See [Contributing.md](./doc/Contributing.md).
