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Resizable BAR (Base Address Register) is a feature that allows a CPU to access the entire GPU memory buffer at once, improving gaming performance and rendering tasks. Not all graphics cards support this feature, so it’s essential to check compatibility before enabling it.
Which Graphics Cards Support Resizable BAR?
Support for Resizable BAR is available on a range of modern graphics cards from NVIDIA and AMD. The compatibility depends on the GPU model, driver support, and motherboard BIOS.
NVIDIA Graphics Cards Supporting Resizable BAR
- NVIDIA GeForce RTX 30 Series (Ampere)
- NVIDIA GeForce RTX 20 Series (Turing) — with driver updates
- NVIDIA Quadro RTX Series
AMD Graphics Cards Supporting Resizable BAR
- AMD Radeon RX 6000 Series (RDNA 2)
- AMD Radeon RX 5000 Series (RDNA 1) — with BIOS update
- AMD Radeon Pro Series
How to Enable Resizable BAR
Enabling Resizable BAR involves updating your motherboard BIOS, updating your graphics card drivers, and turning on the feature in BIOS settings. Follow these steps for a successful setup.
Step 1: Check Compatibility
Ensure your CPU, motherboard, and graphics card support Resizable BAR. Check manufacturer specifications and BIOS updates.
Step 2: Update BIOS and Drivers
- Update your motherboard BIOS to the latest version from the manufacturer’s website.
- Download and install the latest graphics card drivers from NVIDIA or AMD.
Step 3: Enable Resizable BAR in BIOS
Restart your computer and enter BIOS setup (usually by pressing Del or F2 during boot). Locate the Resizable BAR or Above 4G Decoding setting and enable it. Save changes and exit.
Step 4: Verify the Setting
After booting into Windows, verify that Resizable BAR is enabled using tools like GPU-Z or through your graphics card control panel.
Conclusion
Many modern graphics cards support Resizable BAR, but it requires compatible hardware and proper configuration. Enabling this feature can provide noticeable performance improvements in gaming and professional applications.