Sunday, February 8th 2026
AMD on FSR 4 for RDNA 3 and Older GPUs: "No Updates to Share at This Time."
AMD's FidelityFX Super Resolution 4 technology, now known simply as FSR 4, is currently supported in many games, but not across all AMD RDNA GPU generations. In response to an inquiry from Hardware Unboxed, AMD mentioned that it is still uncertain whether official FSR 4 support will be extended to the Radeon RX 7000 series and older GPUs, as the company reportedly has "no updates to share at this time." AMD official product separation stems from its RDNA 4 architecture and the support for 8-bit floating point instructions. While the latest RDNA 4 hardware supports Wave Matrix Multiply Accumulate in FP8 format, older RDNA generations like RDNA 3 and RDNA 2 lack this hardware instruction support and can't process 8-bit floating point data in this format.
However, older Radeon GPUs can instead rely on the 8-bit integer (INT8) data formats, which Radeon RX 7000 series fully supports. AMD accidentally leaked FSR 4 INT8 on its AMD GPUOpen platform, showing that FSR 4 on older GPUs is a possibility, which is just kept hidden for now. Later on, ComputerBase tested this leaked library, finding that FSR 4 offers a balance between native image quality and FSR 3.1 performance on both RDNA 3 and RDNA 2 hardware. In tests with Cyberpunk 2077 in 4K on Ultra settings using the AMD Radeon RX 7900 XTX, FSR 4 delivered 11% faster performance than native, but was 16% slower than FSR 3.1. Interestingly, performance may be the reason why AMD is holding these INT8 FPR 4 libraries back, but another point could be product separation.
AMD already segregates its latest FSR "Redstone" suite of technologies, with features like Ray Regeneration and Radiance Caching exclusive to RDNA 4 hardware in the Radeon RX 9000 series of GPUs. Other basic technologies like upscaling and frame generation are supported on older RDNA 3/2/1 generations, but use an FSR 3.1 Fallback, with no FSR 4 support for now. However, since INT8-based FSR 4 exists, it may only be a matter of time before the company releases the capability to older GPUs, but the expected performance might not be there.
Source:
Hardware Unboxed
However, older Radeon GPUs can instead rely on the 8-bit integer (INT8) data formats, which Radeon RX 7000 series fully supports. AMD accidentally leaked FSR 4 INT8 on its AMD GPUOpen platform, showing that FSR 4 on older GPUs is a possibility, which is just kept hidden for now. Later on, ComputerBase tested this leaked library, finding that FSR 4 offers a balance between native image quality and FSR 3.1 performance on both RDNA 3 and RDNA 2 hardware. In tests with Cyberpunk 2077 in 4K on Ultra settings using the AMD Radeon RX 7900 XTX, FSR 4 delivered 11% faster performance than native, but was 16% slower than FSR 3.1. Interestingly, performance may be the reason why AMD is holding these INT8 FPR 4 libraries back, but another point could be product separation.
110 Comments on AMD on FSR 4 for RDNA 3 and Older GPUs: "No Updates to Share at This Time."
God help us all.
Regarding effort, there's little involved for AMD releasing the INT8 model that we know exists. Hence they're choosing to withhold it, for other reasons.
I'm also curious how profitable it is in the long term for sub 10% marketshare Radeon to try and gatekeep their version of features their competition provides to competing age and older GPUs.
Basically a good-will and brand perception free kick waiting to happen, and they punctured the ball and threw it in the bin.
Now there is another reason "not" to buy AMD, yes you pay premium for NVIDIA, but you get 7+ years of feature updates. Lets hope they change course if there is enough pressure.
Maybe they are not allowed to do this, they might have an agreement to not do this, Nvidia and AMD do talk, they are enemies in public but privately they can strike deals and agree to milk us dry, AMD should thank Nvidia for what a GPU ended up to be and do.
Perhaps there may be a want for product segmentation, as FSR4 wouldn't really be FSR4 on older cards, quality or performance wouldn't be the same. Although I'd want to see an FSR4 beta anyway, doing so would drop the whole "AMD doesn't have my upscaling they don't care about me" arguments. Even though upscaling hasn't done anything good for modern AAA games, it's turned into a crutch for devs to avoid optimizing game engines.
And also Interestingly enough those who seem to care the most about AMD FSR are Nvidia users.Why? Nvidia didn't invent the graphics card.
Meanwhile, the substantial IQ improvements from 4.5 are available across the board.
i wonder if the picture quality is better with fsr 4 compared with fsr 3. when the quality is much better those ~11% performance penalty over fsr 3 newbiebase.de tested values may be worth it.
I#m a very bad metric. i do not see raytracing in control. i do not see any fabulous graphics with radeon 7800xt in the free epic giveaway hogwards legacy. no difference in my point of view. bad physics and wrong calculation methods used. those stuff annoy me a lot especially when i know what it looks like in real life
that topic popped up because pcgh posted it. the root cause is a bad methodical tech channel talked about amd should provide fsr for radeon 6000 and 7000 cards, again. a low quality channel crying for attention and the obvious impossible. amd do not want to give us these features on EOL hardware.
edit:no idea what linux kernel you use.
there is no support for gfx1101 with the linux kernel aka the radeon 7800xt.
bad made third party tools not from amd for gfx1101 and removed sensors read out for gfx1101 paint more a picture of bad software support. the user do not need that software readout. cpu overclocking is fine with newbie burned down ryzen cpus from 5000 / 7000 / 9000 series but graphic cards overclocking get limited silently.
ati700 had userspace tool like nvidia have for many years. amd has 0 userspace tool from amd for the graphic cards with the linux kernel.
fan control did worked around april 2025 the first time for my radeon 7800xt. did not work for any card before.
the root cause is no documentation and amd silently removing features from amd gpus with newer firmware.
edit 2:
i have not continues yet, it is work in progress: www.techpowerup.com/forums/threads/amd-removed-sensor-output-and-partly-access-to-the-powercolor-7800xt-hellhound-graphic-card-gnu-userspace-linux-kernel-radeon-9070xt.345680/
i would stop repeating claims from people who read statements which are not personally verified, especially amd has decent linux kernel support. i could also post about amd motherboards and the lack of documentation for x670 / x670e.
Where's the 7-year feature support that the previous post claimed?
See what you're doing there? ;)Kernel v 6.4 (released in June 2023) and newer supports gfx1101.
AMD really should release FSR 4 (Light/Beta) for RDNA 2/3 as well as all GPUs that support INT8.
This would bring it on par with XeSS, which works on most GPUs, but with the best quality and performance on current Intel GPUs/IGPs.
It would also incentivize developers to implement FSR 4 in more games; a win for AMD and a win for consumers.
just release that INT8 and leave the user to choose
Users swapping hacked together community DLLs is not the same as AMD official support.
If AMD where to release FSR 4 (Light/Beta) for ALL GPUs which support INT8, regardless of manufacturer, it would bring them on-par with Intel, and make it much more relevant.
www.techpowerup.com/345642/amd-to-use-rdna-3-5-igpu-until-2029-rdna-5-only-on-premium-skus
I could care less what the majority uses, I buy based on what I want or need.
The majority complaining that FSR4 doesn't support RDNA1/2/3 are Nvidia users, most others are just enjoying games.Nvidia should open up DLSS to every GPU that supports INT8, since a majority of users have Nvidia cards.
Having DLSS support for every GPU would significantly help the entire GPU market, instead of Nvidia funding game developers to only support their features.
Their deafening statement is, "Go F yourself, nerds".It's also worth noting that FSR 4 isn't supported with Vulkan native games. So even on SteamOS, if you have a game that has a native Linux code, it can't run FSR 4 natively. You would need to run the game through something like Proton or Wine, using DirectX, so you could access the better upscaler. Wild and something Valve would almost absolutely need to resolve before releasing the newest Steam machine. Could you image the image quality difference from FSR 3.1 to FSR 4 on an RX 7600 class GPU? Absolutely massive!
Now, if they just want this so that nVidia will lower prices, or if they would seriously consider switching to AMD, is another discussion.
Personally, I believe that if AMD could stop shooting themselves in the foot, and demonstrate that they are ready and willing to put the effort in to support multiple generations of their GPUs with the most current software features possible, it would show that they could be a serious competitor to nVidia's supposed support dominance.
And yes, I definitely believe that nVidia should open DLSS support to all GPUs that support the correct instructions.
Just as they should have opened PhysX support, or just as they should open CUDA support, etc., etc..
But... they never will (baring legal requirements to do so, which will also never happen, for... reasons :p ), as that would reduce their competitiveness.
What I think we really need is a common model that all GPUs MUST support.
Like how Microsoft rolled RT into DX (or VESA Adaptive Sync).
If they were to do the same with ML Upscaling, with a "good enough" model, it could very easily break nVidia's stranglehold on the industry.
If AMD where to offer up FSR 4, or Intel XeSS, as a base, then we might get back to seeing some real competitiveness in the market.
It's why there will (most likely) never be RDNA4 iGPUs, instead skipping right to RDNA5. 4 was designed specifically for it's current SKUs, designing an arch to be scalable takes more effort (money). Most of their GPU money comes from AI currently, which is on a different arch. Once they move to RDNA5/UDNA1, their consumer gaming, AI and SOCs (consoles) will be able to share R&D costs.
This leads into the FSR4 discussion. AMD is most likely looking to start fresh, software and hardware wise, with RDNA5/UDNA1. With FSR4 being the beta, which makes the Redstone rebrand make more sense. For better or worse, Lisa Su likes to run a lean ship. AMD might put a bit of effort maintaining backwards compatibilty with RDNA4 going forward but I doubt we'll get official FSR4 on older archs. At best AMD releases the source for "educational purposes" later on.
Slightly tangential, corporations aren't your friends. Only reason AMD won't delay RDNA5 (too much) is because of future consoles. Otherwise they'd also pull an nVidia.