AMD has showcased Radeon Super Resolution (RSR) on a dedicated website for the technology. Functionally, RSR is the same as FidelityFX Super Resolution (FSR), which AMD demoed in June 2021 at Computex 2021. In fact, FSR and RSR are so similar that AMD advertises the latter as being powered by the former.
According to the company, RSR should improve in-game performance by 70% in 'thousands of games', a claim it makes in the video embedded below. Apparently, AMD's quoted performance improvement applies to gaming in 4K versus gaming in 4K with RSR on. To do so, RSR upscales from 1440p to 4K, albeit only with AMD graphics cards.
Still, AMD has embedded RSR at a driver level, unlike FSR. Hence, RSR should be available to all eligible Radeon RX cards at a driver level. Reputedly, people will be able to enable RSR within the Radeon Software suite, as shown above. Unfortunately, AMD has not provided a full list of the GPUs that support RSR. A footnote on AMD's website reads:
As of January 2022, Radeon Super Resolution is compatible with Radeon RX 5000 series graphics and newer and works with games that support exclusive full-screen mode. AMD Software: Adrenalin Edition 22.1.3 or newer is required.