- Efficiency mode allows you to limit the resource consumption of background programs from the Task Manager de Windows 11.
- You can manually enable and disable efficiency mode for individual processes, although this setting is not retained across system reboots.
- The feature helps improve overall PC performance and extend battery life. portable, without having to close applications.
If you've ever noticed your computer running slower than expected or your laptop battery draining faster than expected, you've probably wondered if there's a way to optimize system resource usage without having to manually close programs. Windows 11 has taken a step forward with a very practical feature: Efficiency Mode in Task ManagerThis mode reduces the load on the CPU and other parts of the system, helping to maximize performance and battery life.
In this article you will find Everything you need to know about efficiency mode in Task Manager: how to activate it, what it is for, how it differs from Edge efficiency mode, in which cases it is useful, its limitations and Tricks to get the most out of it. Discover how to improve your PC's performance and save energy in a simple way tailored to your needs.
What is Efficiency Mode in Windows 11 Task Manager?
El Efficiency mode It is one of the most notable new features introduced in the Task Manager with the arrival of Windows 11 (starting with the 22H2 update). Its main objective is Automatically limit the resources used by a process or group of processes when it detects that they are consuming more CPU than necessary. This way, the system runs more smoothly, especially the active processes, and the battery lasts longer in laptops, in addition to reducing heat and noise from the equipment.
This feature reduces the priority of background processes and leverages EcoQoS (Eco Quality of Service) to keep power consumption to a minimum.So, if you have unused applications open, efficiency mode ensures they don't consume unnecessary resources, without having to close them or risk causing your system to become unstable.
It is important not to confuse this mode with the efficiency mode of Microsoft EdgeWhile both aim to save power, Edge uses its own efficiency feature for inactive tabs, and its management is completely independent of Windows Task Manager. In fact, disabling efficiency mode in one doesn't affect the other.

How does efficiency mode work?
The operation of efficiency mode is simple but powerful. When you enable this feature for a process from Task Manager, Windows assigns it a lower priority.This means that if there are other programs or tasks that are more relevant to you in the foreground, they will take precedence over the process you've limited resources for.
In addition, thanks to EcoQoS technology, the processor can operate at a lower frequency, saving energy and reducing the internal temperature of the equipment. Microsoft has demonstrated that in common scenarios, this mode can improve system responsiveness by 14% to 76%, which makes a noticeable difference in the daily experience, especially on laptops or computers with hardware limited.
The efficiency mode It does not "kill" or suspend processes, it simply puts them in a state where they affect the rest of the system less.It's especially recommended for programs that consume resources in the background and don't provide immediate value, such as updaters, synchronizers, or unused open application processes.
How to identify that efficiency mode is active?
The easiest way to know if efficiency mode is active for a process is to look for the green double-leaf icon in the Task Manager status columnIf this symbol appears next to a specific process, it means it is operating within efficiency constraints and will therefore consume fewer resources.
If a process becomes unstable when applying efficiency mode, the system will notify you with a warning before activating it, allowing you to decide whether to continue. This is an additional security measure, as not all processes tolerate this priority reduction equally well.
Steps to activate efficiency mode in Task Manager
The procedure is quite simple and can be done in two main ways:
- Open Task Manager: Balance Ctrl + Shift + Esc or right-click the Start button and select Task Manager.
- Select the “Processes” tab: From the left side panel, access the list of active processes.
- Search for the process: Identify the process you want to manage. You can click the arrow next to an application's name to see all associated child processes.
- Activate or deactivate efficiency mode: Right-click the process and select "Efficiency Mode" from the context menu. If the icon is dimmed or missing, it means that the process cannot be managed with this feature because it is critical to the system or incompatible.
Another option is to use the efficiency mode button in the upper right corner of Task Manager (when available). Selecting it will enable the mode for the highlighted process. In both cases, a pop-up window will ask you to confirm the operation, informing you of the potential risks of instability.
What processes can benefit from efficiency mode?
Not all tasks you see in Task Manager can be put into efficiency mode. Critical system processes, responsible for the internal functioning of Windows, do not allow their priority to be changed for security and stability reasons.Therefore, efficiency mode is reserved for user applications and processes, such as browsers, office programs, media players, data synchronizers, and others.
Some programs may even have several child processes, as in Google Chrome or other modern applications. In these cases, you can activate efficiency mode for specific tasks, But if the application has dozens of processes, you will have to do it one by one., since there is no option to apply the mode to all processes in a program at once.
This mode is recommended for programs that do not need to run at full speed and can wait while you focus on priority tasks. For example, file managers downloads, automatic updates, background applications or even video games that you are not actively using.
Is it possible to permanently activate or deactivate efficiency mode?
One of the current limitations of efficiency mode is that The settings are not retained after logging out, restarting the system, or terminating the processThis means that if you want to keep a program in efficiency mode, you'll have to manually re-enable it every time you open it.
In the case of applications installed from the Microsoft store, some have advanced settings from Settings > Apps > Installed Apps > Advanced Options, where you might find parameters that allow you to manage efficiency persistently. However, Traditional desktop applications do not offer this possibility., so you should always use the Task Manager to activate or deactivate efficiency mode.

Advantages of efficiency mode
Using efficiency mode has a number of clear benefits:
- Improves battery life in laptops by reducing energy consumption.
- Reduces noise and temperature of the team by minimizing the CPU load.
- Avoid crashes and slowdowns caused by processes that consume too many resources in the background.
- Provides control to the advanced user to decide which tasks to save resources on, while keeping the rest of the system agile and stable.
- Proven results: According to Microsoft testing, responsiveness improves substantially in intensive usage scenarios.
One of the best contributions of efficiency mode is that does not require closing programs You can't "kill" them from Task Manager, thus preventing you from losing work or causing errors. These processes simply continue to run, but without monopolizing the CPU or other vital parts of the system.
Differences between efficiency mode, Eco mode, and Edge efficiency mode
The terminology can be confusing because Microsoft has used the term "eco" in several recent features:
- Task Manager Efficiency Mode: Available in Windows 11 since version 22H2, it limits the priority of individual processes selected by the user to save resources and power.
- Eco Mode (previously in Windows 10): precursor to efficiency mode, now defunct in favor of the new, improved feature in Windows 11.
- Edge Efficiency Mode: Exclusive feature of the Microsoft Edge browser that reduces the power consumption of inactive tabs, operating independently of the rest of the system.

Disabling efficiency mode in one of these settings doesn't affect the others. That is, you can have Edge with its own efficiency mode and, at the same time, enable or disable Task Manager's efficiency mode for other programs or services.
Common errors, warnings, and recommendations for use
Efficiency mode is meant to help, but There are processes that can become unstable if their priority is limited.Before activating this mode, the system always displays a warning reminding you that the option can cause problems in specific cases.
If after activating efficiency mode a program starts behaving strangely (for example, it stops, quits unexpectedly or stops responding), simply Disable the feature from the same context menu and the process will return to normal.It's recommended not to apply efficiency mode to processes you use intensively or that are critical to your work, such as editing suites, real-time multimedia applications, or professional tools that require maximum priority.
Also, remember that Efficiency mode can only be applied in real time, not permanently., in classic desktop applications. Every time you restart your computer or close the program, you'll need to repeat the steps if you want to maintain the optimization.
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