At Computex 2026, we had the opportunity to sit down with AMD's Chief Software Officer, Andrej Zdravkovic, and Terry Makedon, Senior Director of Software at AMD, to discuss various developments happening in AMD's labs. One of our questions focused on the FSR 4.1 Upscaling algorithm, which is currently exclusive to the RDNA 4 generation with the Radeon RX 9000 series of graphics cards. However, it is expected to be available this July for RDNA 3-based Radeon RX 7000 series GPUs. We were curious whether the FSR 4.1 Upscaling model that currently runs on RDNA 4 would be the same one used on RDNA 3. AMD explained that the underlying model is slightly different, but the end result will be of the same quality. This is reassuring news for millions of RDNA 3 and RDNA 2 gamers worldwide, especially during a time when upgrading PC hardware is more challenging than it has been in years.

For example, we know there are some fundamental differences in the RDNA generations regarding microarchitecture. For RDNA 3, this means there is no 8-bit floating point support in older generations, as only the latest RDNA 4 uses FP8. To run the FSR 4.1 Upscaling model on RDNA 3, AMD must convert this to 8-bit integer data, since RDNA 3 hardware uses INT8 data types without FP8 support. Generally, integer math is sufficient to optimize these models, but the conversion work is necessary, hence the delay between RDNA 4 and RDNA 3 support. This difference requires AMD to completely modify the FSR 4.1 model for the new data type and ensure there is no quality loss in the final visual output. AMD's software officials have confirmed that the company has been working hard on this issue, and more information will be released next month, in July, as the launch approaches.