FSR 4.1 on Radeon 6000, AMD explains why it will take a long time

During Computex 2026, colleagues from TechPowerUp chatted with an AMD representative who presented the expansion roadmap for FSR 4.1, the company’s latest upscaling technology. The solution, currently exclusive to the Radeon RX 9000 graphics cards based on RDNA 4 architecture, will reach the Radeon RX 7000 (RDNA 3) in July, while support for the Radeon RX 6000 (RDNA 2) will take more time and debut in 2027.

Speaking were AMD's Chief Software Officer, Andrej Zdravkovic, and Senior Director of Software Terry Makedon, who explained that the differences between RDNA generations require specific adaptation work for each architecture.

For RDNA 3 GPUs, the main obstacle is the lack of support for FP8 data, which is present in RDNA 4. AMD must therefore convert the FSR 4.1 model to operate with INT8 instructions, a process that requires a revision of the artificial intelligence model. However, the company assures that the final result will provide image quality equivalent to what is available on Radeon RX 9000.

The situation is more complex with RDNA 2 GPUs. These cards do not have dedicated AI accelerators and must therefore perform upscaling through the GPU's normal Stream Processors. In this scenario, FSR 4.1's processing uses the same shader resources employed by video games, an aspect that requires significant optimization effort.

AMD explained that reducing the number of shader cycles required by the algorithm represents a particularly challenging technical hurdle. This characteristic explains why support for the Radeon RX 6000 will come after that planned for the Radeon RX 7000 and why the company has not yet communicated a more precise launch date.

The company also illustrated the development process of FSR 4.1. The initial training of the model takes place on systems based on Instinct MI accelerators, although the size of the algorithm does not require infrastructure comparable to the supercomputers used for large language models. The refinement phase, on the other hand, continues on professional Radeon Pro GPUs through the ROCm software platform, which now supports a uniform ecosystem that includes Radeon, Radeon Pro, and Instinct accelerators.

Before the final rollout, AMD subjects the new upscaling model to tests on hundreds of thousands of different PC configurations, verifying the software's behavior with various combinations of processors, memory, motherboards, and power supplies. This extensive validation work is necessary to ensure a stable experience even on less recent Radeon platforms.