What To Know
- Yes, AMD GPUs support Resizable BAR (Base Address Register), a feature that allows the GPU to access the entire frame buffer (VRAM) at once, removing limitations imposed by traditional PCIe addressing.
- Resizable BAR is a PCIe (Peripheral Component Interconnect Express) feature that enables the GPU to access the entire VRAM directly, bypassing the traditional 256MB limitation.
- Resizable BAR is a game-changer for AMD GPU users, unlocking significant performance gains in specific scenarios.
Yes, AMD GPUs support Resizable BAR (Base Address Register), a feature that allows the GPU to access the entire frame buffer (VRAM) at once, removing limitations imposed by traditional PCIe addressing. This unlocks significant performance gains in specific scenarios, particularly in games that utilize large textures or high-resolution assets.
What is Resizable BAR?
Resizable BAR is a PCIe (Peripheral Component Interconnect Express) feature that enables the GPU to access the entire VRAM directly, bypassing the traditional 256MB limitation. This eliminates the need for the GPU to perform multiple memory accesses to retrieve data, reducing latency and improving performance.
Benefits of Resizable BAR for AMD GPUs
- Reduced Latency: Direct access to VRAM eliminates the need for multiple memory accesses, significantly reducing latency.
- Increased Performance: Faster memory access translates to higher frame rates, especially in games that require large textures or assets.
- Improved Stability: By reducing latency and memory access overhead, Resizable BAR can enhance system stability and reduce crashes.
How to Enable Resizable BAR on AMD GPUs
To enable Resizable BAR on AMD GPUs, follow these steps:
1. Update BIOS: Ensure your motherboard BIOS is up-to-date with the latest version that supports Resizable BAR.
2. Update AMD Drivers: Install the latest AMD Radeon Software Adrenalin drivers.
3. Enable in BIOS: Enter the BIOS settings and navigate to the PCIe section. Enable the “Above 4G Decoding” and “Resizable BAR Support” options.
4. Enable in Windows: Open the Windows Device Manager, expand the “Display Adapters” section, right-click on your AMD GPU, and select “Properties.” Go to the “Advanced” tab and enable “Enable Resizable BAR Support.”
Which AMD GPUs Support Resizable BAR?
The following AMD GPUs support Resizable BAR:
- Radeon RX 6000 series
- Radeon RX 5000 series (select models)
- Radeon VII
Games that Benefit from Resizable BAR on AMD GPUs
Resizable BAR can significantly improve performance in games that utilize large textures or assets, such as:
- Doom Eternal
- Forza Horizon 5
- Red Dead Redemption 2
- Cyberpunk 2077
- Call of Duty: Warzone
How to Check if Resizable BAR is Enabled
To verify if Resizable BAR is enabled on your system, follow these steps:
1. Open the AMD Radeon Software Adrenalin application.
2. Click on the “Performance” tab.
3. Scroll down to the “Advanced” section and look for “Resizable BAR.” If it says “Enabled,” then Resizable BAR is active.
Troubleshooting Resizable BAR Issues
If you encounter any issues with Resizable BAR, try the following:
- Reinstall the latest AMD drivers.
- Update your motherboard BIOS to the latest version.
- Disable and re-enable Resizable BAR in the BIOS and Windows.
- Verify that your GPU and motherboard are compatible with Resizable BAR.
Final Note: Unlocking Performance with Resizable BAR on AMD GPUs
Resizable BAR is a game-changer for AMD GPU users, unlocking significant performance gains in specific scenarios. By removing the limitations of traditional PCIe addressing, Resizable BAR allows the GPU to access the entire VRAM directly, reducing latency and improving performance. If your AMD GPU and motherboard support Resizable BAR, enabling it is highly recommended to maximize your gaming experience.
Basics You Wanted To Know
Q: Does Resizable BAR work with all AMD GPUs?
A: No, only select AMD GPUs support Resizable BAR. Check the list above for compatible models.
Q: How much performance improvement can I expect from Resizable BAR?
A: Performance gains vary depending on the game and system configuration. However, some games have shown significant improvements of up to 15%.
Q: Can Resizable BAR cause stability issues?
A: While Resizable BAR is generally stable, some users have reported occasional issues. If you experience any problems, try disabling it and reinstalling the latest AMD drivers.
