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Enabling the Resizable BAR (Base Address Register) feature on Asus motherboards can significantly enhance gaming performance and system responsiveness. Proper BIOS configuration is essential to unlock this feature’s full potential. This guide highlights the top BIOS settings to enable Resizable BAR on Asus motherboards for optimal performance.
Understanding Resizable BAR
Resizable BAR allows the CPU to access the entire graphics card memory buffer at once, improving data transfer efficiency. When enabled, it can lead to higher frame rates and smoother gameplay, especially in demanding titles.
Prerequisites for Enabling Resizable BAR
- Compatible Asus motherboard with BIOS support for Resizable BAR
- Latest BIOS firmware installed
- Supported graphics card (NVIDIA or AMD) that supports Resizable BAR
- Updated GPU drivers
Step-by-Step BIOS Settings for Enabling Resizable BAR
1. Accessing BIOS
Restart your system and press the Delete or F2 key during startup to enter the BIOS setup.
2. Updating BIOS
Ensure your BIOS is up to date. Visit the Asus support website, download the latest BIOS firmware for your motherboard model, and follow the manufacturer’s instructions to update.
3. Enabling Above 4G Decoding
Navigate to the Advanced tab, then select PCI Subsystem Settings. Enable Above 4G Decoding. This setting is crucial for Resizable BAR to function correctly.
4. Enabling ReSize BAR Support
Within the Advanced menu, locate PCIe/PEG or similar options. Find ReSize BAR Support and set it to Enabled.
5. Saving Settings and Restarting
Press F10 to save your changes and exit BIOS. Your system will reboot with Resizable BAR enabled.
Verifying Resizable BAR Activation
After booting into Windows, verify that Resizable BAR is active:
- Open Device Manager.
- Expand Display adapters.
- Right-click your GPU and select Properties.
- Go to the Details tab and select Hardware IDs.
- Check for indications of Resizable BAR support or consult your GPU’s software tools like NVIDIA Control Panel or AMD Radeon Settings.
Additionally, some motherboard BIOS screens or system information tools will explicitly show if Resizable BAR is active.
Additional Tips for Optimal Performance
- Keep your GPU drivers up to date.
- Ensure your operating system is current and supports Resizable BAR features.
- Use performance monitoring tools to assess improvements after enabling the feature.
- Consult your motherboard manual for specific BIOS menu options if they differ.
Enabling Resizable BAR on Asus motherboards can provide a noticeable boost in gaming and application performance. Following these BIOS settings will help you unlock the full potential of your system.