Resizable Bar Compatibility List For Popular Graphics Cards

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Resizable BAR (Base Address Register) is a feature that allows the CPU to access the entire GPU memory buffer at once, improving performance in many gaming and professional applications. Compatibility with this feature depends on your graphics card, motherboard, and BIOS support. This article provides a comprehensive list of popular graphics cards and their Resizable BAR compatibility status.

What is Resizable BAR?

Resizable BAR is a PCI Express feature that enhances data transfer between the CPU and GPU. When enabled, it allows the CPU to access the full GPU memory buffer, which can lead to better frame rates and smoother gameplay. However, not all graphics cards support this feature, and compatibility also depends on motherboard BIOS and firmware.

Requirements for Resizable BAR Support

  • Graphics Card: Must support Resizable BAR (check manufacturer specifications).
  • Motherboard: Needs a compatible PCIe slot and BIOS update that enables Resizable BAR.
  • CPU: Recent generations of Intel and AMD CPUs support this feature.
  • BIOS/UEFI: Must be updated to the latest version with Resizable BAR support enabled.

NVIDIA GeForce Series

  • NVIDIA GeForce RTX 30 Series: Fully compatible with Resizable BAR.
  • NVIDIA GeForce RTX 20 Series: Support varies; some models support Resizable BAR with BIOS update.
  • NVIDIA GTX 16 Series: Generally not supported.

AMD Radeon Series

  • AMD Radeon RX 6000 Series: Fully compatible with Resizable BAR.
  • AMD Radeon RX 5000 Series: Support varies; check specific model and BIOS.
  • Older AMD GPUs: Typically do not support Resizable BAR.

Checking Compatibility

To verify if your graphics card supports Resizable BAR:

  • Consult the official product specifications from the manufacturer.
  • Update your motherboard BIOS to the latest version.
  • Enable Resizable BAR in BIOS settings if available.
  • Use tools like GPU-Z or manufacturer software to confirm feature activation.

Enabling Resizable BAR

Once compatibility is confirmed, enable Resizable BAR in your BIOS:

  • Enter BIOS/UEFI during system startup.
  • Navigate to advanced settings or PCIe configuration.
  • Find the Resizable BAR or Above 4G Decoding option and enable it.
  • Save changes and reboot your system.

Conclusion

Resizable BAR can provide a performance boost for gaming and professional workloads when supported by your hardware. Always ensure your components are compatible and properly configured to take advantage of this feature. Check your GPU and motherboard documentation regularly for updates and support information.