Xbox's Jason Ronald just confirmed AMD's machine learning upscaler, FSR Upscaling 4.1.2, is live for developers on Xbox Series X and Series S, with a brand new GDK sample showing a Full model and a lighter Lite model tuned for each console. Here's what's actually in the release, the real performance numbers Microsoft published, and what it means for how your games look and run.
It’s official. The upscaling upgrade Xbox console owners have been waiting on just landed in developers’ hands.
AMD FSR Upscaling 4.1.2 on XBOX Series X|S is available to developers today!
Xbox’s Jason Ronald posted this evening, Wednesday, November 4, at 7:08 PM ET, that AMD FSR Upscaling 4.1.2 is now available to developers on Xbox Series X|S. Alongside it, Microsoft published a new sample in its official Xbox GDK (Game Development Kit) samples on GitHub that shows studios exactly how to plug it in, with two versions of the machine learning model: Full and Lite, “optimized for each console.”
“Our new GDK sample demonstrates both Full and Lite models, optimized for each console. Thanks to our partners at @AMD for the great collaboration! We can’t wait to see what developers create with it.”
Jason Ronald on X
What you need to know
- What it is: AMD FSR Upscaling 4, AMD’s machine learning upscaler. The game renders at a lower resolution, and FSR 4 uses info from multiple frames to rebuild a sharper, higher resolution image without a big performance hit.
- Version: 4.1.2, the newest release. AMD’s own docs date it October 28, 2026.
- Platforms: Xbox Series X and Xbox Series S. The same sample also builds for Windows PC.
- Who can use it today: Game developers. Studios have to build it into their games, so you won’t see it in your library until games patch it in or ship with it.
- Requirement for devs: The sample needs the Microsoft GDK from October 2025 or later.
- Two models on Xbox: Full (the default) and Lite, which Microsoft describes as a “highly optimized” model “less than half the size of the original” and “purpose-built for lower class of hardware.” Picking Full or Lite is an Xbox-only option.
- Old option still there: On Xbox, the sample lets developers flip between FSR4 Full, FSR4 Lite and the older non-ML FSR 3.
The real numbers: how much it costs on Series X and Series S
Microsoft’s sample includes measured timings for the upscaler pass itself (not the whole frame). Lower is better:
| Console | Model | Output | Time |
|---|---|---|---|
| Xbox Series X | FSR4 Lite | 1440p | 1.29 ms |
| Xbox Series X | FSR4 Lite | 4K | 2.75 ms |
| Xbox Series X | FSR4 Full | 1440p | 1.95 ms |
| Xbox Series X | FSR4 Full | 4K | 3.86 ms |
| Xbox Series S | FSR4 Lite | 1080p | 1.9 ms |
| Xbox Series S | FSR4 Lite | 1440p | 3.4 ms |
| Xbox Series S | FSR4 Full | 1080p | 2.9 ms |
| Xbox Series S | FSR4 Full | 1440p | 5.2 ms |
For context, a game running at 60 fps has about 16.7 ms to build each frame. Microsoft notes the figures are “subject to change.”
Memory use in the sample is about 304 MB on Series X|S at a 4K output from a 1440p render, and it’s the same for Full and Lite. Microsoft says the Full vs Lite pick “is a performance trade-off, not a memory one.”
The quality modes
FSR 4 uses the same named presets PC players already know. Here’s how each one maps when the target is 4K:
- Native AA (1.0x): renders at 4K, no upscaling, just cleanup.
- Quality (1.5x): renders at 1440p.
- Balanced (1.7x): renders at about 1270p.
- Performance (2.0x): renders at 1080p.
- Ultra Performance (3.0x): renders at 720p.
How we got here
- October 20: At an AMD event, AMD’s Jack Huynh brought out Xbox CTO Scott Van Vliet, who announced FSR 4.1 was coming to Xbox. “Whether you’re playing on an Xbox Ally handheld, as well as coming soon to Xbox Series S and X consoles, and this is just the beginning,” Van Vliet said, adding that Project Helix, Xbox’s next-gen hardware, will leverage “FSR Diamond to power what comes next.”
- Same day: Ronald posted that FSR 4.1 would reach Xbox Series X|S developers “very soon,” and that Xbox had “partnered closely with our friends @AMD to optimize and tune the models to deliver incredible performance and quality on both consoles and the ROG XBOX Ally and Ally X.”
- Before this: The Xbox GDK samples only covered the older FSR 1 and FSR 2 upscalers plus FSR 3 frame generation. As Digital Foundry pointed out at the time, the machine learning hardware in Series X and Series S has been there since 2020 but hadn’t been used for upscaling.
- Today, November 4: Two weeks later, it’s live for developers.
What it means on PC
On the PC side, AMD says games that already use FSR 3.1 or later can be upgraded automatically to FSR Upscaling 4.1.2 on DirectX 12 through its Adrenalin 26.10.1 driver or newer, on Radeon RX 9000, 7000 and 6000 Series cards and supported Ryzen chips. A shared toolset across Xbox and PC means more studios have a reason to build FSR 4 support into their games once, and both sides benefit.
Which Xbox game needs FSR 4.1 patched in first?
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What we still don’t know
- Which games will patch it in first. Neither Microsoft nor AMD named any yet.
- Whether Microsoft will ever offer a system-level switch that upgrades older FSR games automatically. For now, it’s on developers.
- Whether frame generation or other FSR “Redstone” features are coming to Series X|S. Today’s release is upscaling only.
Community reaction
Xbox fans jumped on it fast, and the first wish list is already forming. One reply under Ronald’s post asked for Xbox to start with its own games, naming Indiana Jones, Doom: The Dark Ages, Halo: Combat Evolved, Gears of War: E-Day and Forza Motorsport.
FSR 4.1 is now available for Devs to boost games on Xbox Series X and S Consoles! https://t.co/95RMySUROl
, colteastwood (@Colteastwood) November 5, 2026
OnPoint’s take: This is a gigantic W for every Xbox console owner, and Series S owners most of all. The Series S has been the console people love to pick on for soft image quality, and now it has a purpose-built Lite model that does a 1080p output in under 2 ms. That’s real headroom that devs can turn into sharper games or steadier frame rates. Here’s what people aren’t seeing: this hardware was in the box since 2020, and Xbox is pulling new life out of consoles you already own instead of telling you to buy something new. Two weeks from “coming soon” to “available today” is Xbox moving with urgency, and with Project Helix built around the same AMD tech, everything devs learn now carries forward. Now we want first-party to set the tone. Patch it into the big Xbox games and show everybody what Series X and Series S can really do. What a time to be an Xbox fan.
Image: OnPoint 4 Gamers (illustration)
Sources
- Jason Ronald on X: FSR Upscaling 4.1.2 available to Xbox Series X|S developers
- Microsoft Xbox GDK Samples on GitHub: AMD FSR Upscaling 4 sample
- AMD GPUOpen: AMD FSR SDK
- AMD GPUOpen: AMD FSR Upscaling 4.1.2 manual
- Digital Foundry: Microsoft says FSR 4.1 is coming “very soon” to Xbox developers
- Pure Xbox: AMD FSR 4.1 announced for Xbox Series X|S and ROG Xbox handhelds
- @idiocracy21 reply on X
- @Colteastwood on X
