AMD releases FSR 4.1 for Radeon RX 9000 series, uses algorithm shared with Sony’s updated PSSR

AMD releases Adrenalin 26.3.1 for Crimson Desert, highlights FSR 4.1 update

AMD has released Radeon Software Adrenalin Edition 26.3.1 , the same day Crimson Desert went live (I would say it was long overdue, but that’s just AMD’s thing). Pearl Abyss says the game launched globally today and that the PC version supports FSR 3/4 and AMD FSR Ray Regeneration.

In AMD Gaming’s launch message for Crimson Desert, the company describes the update as FSR Upscaling 4.1 and says it improves ML-based upscaling with finer detail, smoother camera motion, and better Ultra Performance Mode behavior.

Source: AMD

That also clarifies the current hardware target for FSR 4.1. There were some rumors that AMD might unlock FSR4 for older architectures; however, latest drivers clearly mention support only for the Radeon RX 9000 series.

🚀 Crimson Desert is Live Today!

Continuing our journey on @AMD FSR Redstone and announcing our new GPU driver release is ready:

✨ Ray Regeneration 1.1 – Enhanced reflections & global illumination, fully supported in Crimson Desert

🎮 FSR Upscaling 4.1 – Sharper image quality… pic.twitter.com/rvSu4kA1aL

— Jack Huynh (@jackhuynh) March 19, 2026

Crimson Desert is now one of AMD’s first public launch showcases for the newer FSR stack outside earlier previews. With Adrenalin 26.3.1, AMD is using the game’s day-one release to push both its updated upscaling branding and its ray-tracing denoising feature in a shipping title.

Apparently FSR 4.1 is actually based on recently released PSSR (2) technology for PlayStation 5 Pro, as showcased by Mark Cerny. The PSSR update was released this week .

Just tried FSR Upscaling 4.1 in a few PC games. It’s based on the same neural network as the upgraded PSSR we released for PS5 Pro… and it looks stunning!

Wonderful working with @jackhuynh and the @AMD team as we collaborate on AI graphics tech. Big win for Project Amethyst :-) pic.twitter.com/yhgwJG716E

— Mark Cerny (@cerny) March 19, 2026

Source: AMD