FSR 4 Compatibility Overview
AMD’s latest FSR 4 upscaler was officially released for RDNA 4 GPUs, but the technology can technically run on older RDNA 2 and RDNA 3 graphics cards.
Community Workarounds
Users have enabled FSR 4 on RX 6000 and RX 7000 series by using the leaked INT8 DLL file that AMD accidentally released last year. The file was quickly shared and applied to older GPUs.
Performance and Visual Quality
Comparisons between FSR 3.1 and FSR 4.0 on RDNA 2/3 show a noticeable visual improvement. The INT8 version introduces some performance regressions, but the “Performance” mode can match FSR 3.1 Quality while delivering better images.
AMD’s Official Position
Hardware Unboxed contacted AMD for an update on an INT8 FSR 4 build for previous‑gen GPUs. AMD has not confirmed any plans, stating only that it has not released the version.
NVIDIA’s Approach
NVIDIA released DLSS 4.5 for older RTX 20 and RTX 30 series, giving users a choice between newer and legacy upscaling methods. AMD has not followed the same path.
Impact on Gamers
The lack of an official FSR 4 release for older hardware may push some gamers toward competing platforms, as modern upscaling technologies become limited to the newest GPUs.