Someone at AMD is going to be getting a dressing down, as the AMD FSR 4 source code has just been inadvertently posted on Github, and then swiftly deleted. Not only has this slip-up potentially given competitors such as Nvidia the chance to peer at the inner workings of AMD’s new upscaling tech, but it’s also revealed the presence of files that could enable you to run FSR 4 on older AMD Radeon GPUs based on the RDNA 3 architecture, such as the Radeon RX 7800 XT.
I’m a big fan of AMD FSR 4, which I tested for my AMD Radeon RX 9070 XT review. Unlike previous versions of FSR, it uses AMD’s AI cores, and the difference is night and day for game graphics. The previous problems with blurriness and horrible digital noise around fast movement are gone, and the result is much sharper graphics in games, with a big boost in frame rates compared to not using FSR at all. This new tech helped propel several of AMD’s latest GPUs onto our best graphics card buying guide, and AMD has also previously told us that there’s no technical reason why you couldn’t run FSR 4 on Nvidia GPUs using the Tensor cores.
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