Xbox Series X: The Most Powerful and Compatible Next-Gen Console with Thousands of Games at Launch - Xbox Wire
[Update 9/14/20: We’re happy to share that backward compatible titles will be coming to Xbox Series S as well as Xbox Series X. To deliver the highest quality backwards compatible experience consistent with the developer’s original intent, the Xbox Series S runs the Xbox One S version of...
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A lot of this was initially covered by Digital Foundry during the big Series X technical breakdown but it's still nice to get it reiterated:
Not only should gamers be able to play all of these games from the past, but they should play better than ever before. Backwards compatible games run natively on the Xbox Series X hardware, running with the full power of the CPU, GPU and the SSD. No boost mode, no downclocking, the full power of the Xbox Series X for each and every backward compatible game. This means that all titles run at the peak performance that they were originally designed for, many times even higher performance than the games saw on their original launch platform, resulting in higher and more steady framerates and rendering at their maximum resolution and visual quality. Backwards compatible titles also see significant reductions in in-game load times from the massive leap in performance from our custom NVME SSD which powers the Xbox Velocity Architecture. As I play through my personal backlog as part of our internal testing, all of the incredible games from Xbox One and earlier play best on Xbox Series X.
Beginning with Xbox One X, the compatibility team developed brand new innovations that could be applied to a hand curated list of titles to enhance them even further than what was possible when they were first created. Techniques such as the Heutchy method, which enables titles to render with increased resolutions up to 4K, or applying anisotropic filtering to improve the final image quality bring these classic games up to modern standards, better than ever before.
The team was not content to just rely on the increased hardware performance to improve your playing experience. The team developed new platform level capabilities to ensure all of your games continue to get even better. In partnership with the Xbox Advanced Technology Group, Xbox Series X delivers a new, innovative HDR reconstruction technique which enables the platform to automatically add HDR support to games. As this technique is handled by the platform itself, it allows us to enable HDR with zero impact to the game's performance and we can also apply it to Xbox 360 and original Xbox titles developed almost 20 years ago, well before the existence of HDR.
With all of the additional power and advancements of the Xbox Series X, the compatibility team now has a veritable playground of new capabilities to innovate and push the limits of game preservation and enhancement. The compatibility team has invented brand new techniques that enable even more titles to run at higher resolutions and image quality while still respecting the artistic intent and vision of the original creators. We are also creating whole new classes of innovations including the ability to double the frame rate of a select set of titles from 30 fps to 60 fps or 60 fps to 120 fps.
The team also continues to listen to feedback from the community on additional titles you would like to see added to the compatibility program. Resurrecting titles from history often presents a complex mix of technical and licensing challenges, but the team is committed to doing everything we can to continue to preserve our collective gaming legacy.
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