TECH NEWS – The upscaler designed for the RX 9000 series of cards can also be used with AMD’s previous generation of cards, the Radeon RX 6000 series.

Enabling the latest AMD upscaler on older Radeon GPUs is easier than it seems. A newly discovered trick allows FSR 4 to be enabled on RX 6000 GPUs. Recently, it was discovered that FSR 4 also works on RX 7000 GPUs on Windows. This method uses INT8 model files that were leaked from AMD’s source code, and it appears to work on RDNA 2 cards as well. However, the latest upscaler reportedly caused a noticeable performance drop on RX 6000 graphics cards, but someone has solved this issue with a simple trick. A member of the ComputerBase community found a method that works without causing a performance hit.

First, install a compression program (WinRAR or 7-Zip). Both the old and new drivers need to be extracted (right-click and use the context menu). Then, in the old driver, look for the amdxc32.dll and amdxc64.dll files in the Packages > Drivers > Display > WT6A_INF > B395348 directory. In the new driver, in the same directory (note: the folder named Bxxxxx is different in each driver), overwrite the existing files with the old ones. Finally, install the new driver from the unpacked archive.

By replacing two files (amdxd32.dll and amdxc64.dll) in the latest Adrenalin driver, FSR 4 can be enabled on RX 6000 GPUs. This method can also be used with older versions of the driver (23.9.1). A user who used this method demonstrated visual quality differences with RX 6000 GPUs, such as the RX 6800. They uploaded videos showing image quality with different FSR 4 presets (Native, Quality, Performance) and directly compared it to the Radeon RX 9070, which officially supports FSR 4 natively.

FSR 4 Native/Quality now offers almost identical results to the RX 9070 and provides image quality very similar to native rendering. Even more impressive is that using FSR 4 does not result in any performance drop at all.

Source: WCCFTech, ComputerBase