Intel Admits Arc GPUs Performance Issues with Older CPUs
Intel has officially acknowledged that their Arc GPUs are not performing as expected with older CPUs. It appears some older CPUs are limiting the full potential of these graphics cards.
The Performance Puzzle: Older CPUs and Arc GPUs
Reports and tests indicate that using Intel Arc cards, especially models like the Arc B580, with older CPUs can cause significant frame rate stuttering in games. Processors such as the Ryzen 5 2600/5600 series or Intel's Core i5-9600K generation chips are affected. Strangely, pairing the same Arc B580 with a newer, higher-end CPU like a Ryzen 7 9800X3D eliminates these performance drops.
This issue is relevant because Arc B580 and B570 are mid-range cards often purchased by users upgrading older PCs. This incompatibility could impact many gamers.
Intel's Reaction: Addressing the Issue
Intel is aware of this "performance sensitivity" with older CPUs. They have publicly stated they are actively investigating the problem and seeking solutions. Intel has expanded their testing to include a wider range of older CPU configurations. This is a positive step towards improving compatibility and ensuring smoother Arc GPU performance on older systems.
Beyond Resizable BAR Considerations
While Resizable BAR is crucial for optimal Arc GPU performance, this older CPU issue is distinct. It's not simply a matter of Resizable BAR being absent. Intel's Arc architecture seems to place greater demands on the CPU compared to typical AMD or NVIDIA graphics cards.
What This Means For Users
If you plan to use an Intel Arc GPU with an older CPU, be mindful of this potential bottleneck. While it may function, you might not achieve the desired performance gains. Monitor Intel's updates for potential driver or software fixes to reduce CPU reliance and improve Arc cards as an upgrade for more PCs.
For new builds or upgrades with an Arc GPU, using a newer generation CPU is currently the safer option to fully utilize its capabilities.
