Disabling e-cores on Windows 11 involves tweaking some advanced system settings, specifically within your PC’s BIOS or UEFI firmware. This task will help enhance your performance for certain applications. Follow these steps to disable e-cores safely and effectively.
How to Disable E-cores Windows 11
In this section, we’ll walk through the steps to disable the efficiency cores (e-cores) on a Windows 11 machine. Ensuring your BIOS is up-to-date and knowing how to navigate it is crucial. This process allows you to optimize your system for tasks that benefit from higher performance cores (P-cores).
Step 1: Backup Your Important Data
First and foremost, backup your important data.
It’s critical to ensure that you have recent copies of your important files before making any system changes. This helps protect against any data loss during the process.
Step 2: Restart Your Computer
Restart your computer to access the BIOS/UEFI settings.
Restarting your computer will bring up options to enter your BIOS/UEFI settings. This step is essential to access the settings needed to disable your e-cores.
Step 3: Enter BIOS/UEFI
Upon restart, press the key to enter BIOS/UEFI (often F2, F10, or Delete).
Different computers use different keys to enter BIOS/UEFI. Watch for the prompt on your screen during startup, and press the required key.
Step 4: Navigate to CPU Configuration
In the BIOS/UEFI menu, find and select the CPU Configuration or Advanced CPU Settings.
BIOS/UEFI menus can look different depending on your motherboard, but the goal is to find the settings that let you manage your CPU’s performance.
Step 5: Disable E-cores
Locate the option to disable e-cores and set it to ‘Disabled.’
This setting might be labeled differently, but it usually involves options to manage your CPU’s core enabling/disabling. Adjust this to disable the e-cores.
Step 6: Save and Exit
Save your changes and exit the BIOS/UEFI.
Usually, there will be a ‘Save and Exit’ option. This will apply the changes and restart your computer with the new settings.
After following these steps, your computer will restart with e-cores disabled. You should notice differences in performance depending on the applications you use.
Tips for Disabling E-cores Windows 11
- Check Your BIOS/UEFI Version: Ensure it’s up-to-date to avoid any compatibility issues.
- Revisit BIOS/UEFI: Familiarize yourself with the BIOS/UEFI layout before making changes.
- Know the Key: Determine the correct key to access BIOS/UEFI for your specific computer model.
- Document Settings: Make a note of your original settings before changing anything.
- Test Performance: After disabling e-cores, test your system to ensure it performs as expected.
Frequently Asked Questions
What are e-cores?
E-cores, or Efficiency Cores, are designed to handle background tasks and improve energy efficiency.
Why should I disable e-cores?
Disabling e-cores can enhance the performance of applications that benefit from higher performance cores.
Will this affect my computer’s warranty?
Modifying BIOS/UEFI settings usually does not void your warranty, but check your warranty terms to be sure.
Can I re-enable e-cores later?
Yes, you can re-enable e-cores by following the same steps and changing the setting back to ‘Enabled.’
What if I can’t find the CPU Configuration?
Refer to your motherboard’s manual or visit the manufacturer’s website for guidance.
Summary
- Backup your important data.
- Restart your computer.
- Enter BIOS/UEFI.
- Navigate to CPU Configuration.
- Disable e-cores.
- Save and exit.
Conclusion
Disabling e-cores on Windows 11 can be a beneficial tweak for users looking to optimize their system performance for particular applications. By following the steps outlined in this guide, you can safely disable your e-cores and potentially see a boost in performance for tasks that rely heavily on the high-performance cores.
Remember, it’s essential to backup your data before making any changes. Learning your way around the BIOS/UEFI can seem daunting, but it’s a valuable skill that can help you customize your PC’s performance to better meet your needs.
Once you’ve completed the steps, monitor your system to ensure it’s running smoothly and that you’ve achieved the desired performance gains. If you ever need to revert the changes, simply follow the steps again and re-enable the e-cores. For further tips and tricks on optimizing your system, consider exploring additional resources or contacting your computer manufacturer for support.

Kermit Matthews is a freelance writer based in Philadelphia, Pennsylvania with more than a decade of experience writing technology guides. He has a Bachelor’s and Master’s degree in Computer Science and has spent much of his professional career in IT management.
He specializes in writing content about iPhones, Android devices, Microsoft Office, and many other popular applications and devices.