FSR 4 Modded to Run on RDNA 2 GPUs: Improved Image Quality with 10% Performance Penalty - Tom's Hardware

FSR 4, originally designed for AMD's RX 9000 series GPUs, has been successfully modded to run on older RDNA 2 graphics cards. This modification was made possible after AMD inadvertently published the entire source code for FSR 4 on GitHub. Modders quickly took advantage of this leak and created tweaked DLLs that allow older GPUs to utilize FSR 4.

Several users have tested these modified versions, and results consistently show a significant improvement in image quality. However, this enhancement comes at a cost: users are experiencing a 10% performance penalty, leading to reduced FPS compared to the original implementation.

If you're interested in learning more about this development or testing it yourself, you can read the full article on Tom's Hardware.

Date: September 22, 2025