Xbox Series X and Series S are getting an ML upscaler for the first time. On November 4 AMD announced that FSR Upscaling 4.1.2 is now part of Microsoft's October GDK, the Xbox development kit. On the consoles it comes in two models, Full and a lighter Lite, and Microsoft's own measurements put its cost at 1.29 to 5.2 milliseconds per frame. It will not show up in existing games by itself, though: developers have to build it in.
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Full or Lite: the developer's call
Both models use INT8 and run on both consoles. According to AMD, Lite is less than half the size of the full model and cheaper to run, and developers pick one per game. Memory use is the same for both: in Microsoft's sample it is 304 MB when upscaling 1440p to 4K, because the footprint depends on resolution rather than on the model.
The speed gap is real. On Series X the Lite model takes 1.29 ms at 1440p output, while the full model takes 3.86 ms at 4K. Series S has it harder: the full model at 1440p costs 5.2 ms. At 60 fps the whole frame gets 16.7 ms, so on the smaller console the upscaler eats almost a third of the budget. My guess is that Series S games will mostly use Lite with 1080p output, where it costs 1.9 ms.
Developers hook up FSR 4.1.2 on Xbox through the same FSR SDK API as on PC, with the usual inputs: jittered color, depth and motion vectors. Studios that already ship FSR on PC should have an easy time. But neither AMD nor Microsoft has named a single game yet, and until patches arrive, existing console games keep using the old analytical FSR. Microsoft's sample switches between Full, Lite and the old FSR3 on the fly, so developers can compare the image in the same scene.
ROG Xbox Ally: an ASUS driver works today
The ASUS Xbox handhelds take a different route, since they are regular Windows PCs. FSR SDK 2.4 added support for the Ryzen AI Z2 Extreme and Ryzen Z2 A chips in the ROG Xbox Ally, Ally X and Ally X20, with a separate efficient INT8 model. Ally X and Ally X20 owners do not have to wait for studios: a preview ASUS driver upgrades DirectX 12 games with FSR 3.1 or newer to FSR 4.1.2 on its own. The base Ally gets support in a later update, and Vulkan games need native support for the new SDK.
Sources
AMD GPUOpen, "AMD FSR Upscaling 4.1.2 Comes to XBOX", November 4, 2026: models, October 2026 GDK, ROG Xbox Ally and the ASUS driver. Microsoft, AMD_FSR sample in Xbox-GDK-Samples: pass timings and memory use, updated November 5, 2026. TechPowerUp, November 5, 2026: news tip. Images: official AMD renders from the GPUOpen announcement.
