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FSR 4 on RDNA 3 hopium thread

Vexr

Vexr

Vexr

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15 Oct 2018
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I'm still loving my 7900 XT, but if it could utilise FSR 4 that would really make it the fantastic (non-RT) all-rounder I hoped for, even if it can't get as much performance uplift from FSR 4 that RDNA 4 can.

On RDNA 3, XeSS is the best upscaler from what I've seen, having superior image quality to FSR 3 but a reduced performance uplift.

RDNA 3 owners, let's share our hopium fuel that AMD has not forgotten us and a form of FSR 4 will be coming to our GPUs :)


 
Will be curious to see how this plays out.

If there is nothing forthcoming from AMD by Q3/Q4 it will be interesting to see what's happening on the linux side. At the moment there is no FSR4 support for 9070(XT) in the linux drivers.

There has been chatter on the optiscaler & proton projects with requests raised to AMD to make FSR4 available for the 9070(XT)s, but people are stuck waiting for AMD to provide the FSR4 SDK/AGS docs they need and don't expect to see them until Q3/Q4. Once they have them I'd expect someone will see what is possible on older cards as well.
 
heh, he seems excitable and maybe jumping the gun a bit although is good to see someone enthusiastic about things around the current gfx card release instead of the usual doom and gloom ;)

Hans Kristian is/was contracted on Valve's linux graphics team, and still writes code for Valve projects. Valve also contract engineers from multiple companies to work a lot of things including the open source AMD drivers.

I have great respect and sympathy for guys like Hans, because their work in open source is public so while they are collaborating with other projects, they can suddenly get their discussion hijacked with people asking "when will it be ready", "will this work on X/Y/Z", "how do I run this" long before it is ready.
 
I was considering getting a 7900XT but from what I read they don't have sufficient hardware support for FSR4 but AMD will continue to update FSR3 for them instead and might be able to bring some of the FSR4 improvements to FSR3.
 
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mmj_uk said:
I was considering getting a 7900XT but from what I read they don't have sufficient hardware support for FSR4 but AMD will continue to update FSR3 for them instead and might be able to bring some of the FSR4 improvements to FSR3.
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Personally, unless you need a new graphics card, I wouldn't bother getting a 7900XT now in the hope that some form of quality FSR4 will appear. If your current card is good enough for another year, I'd wait for more info about the next round of UDNA cards to come.

Once prices stabilise, you'd probably be better with a 9070XT over a 7900XT if you need a new card.

I have a 7900XT and was intending to skip the 9070's and wait for UDNA when AMD will release a high end card again. I had been watching XTX prices, but they never went low enough to make it worth the upgrade for me, even less so when needing a new PSU to go with it.
Once the decent reviews came out, it was clear the 9070XT had a useful performance increase in games I play over my 7900XT so would work for a switch to Linux sooner, rather than staying on the Windows treadmill and upgrading to 11 with all it's unwanted features MS are determined to put in. In actual use the 9070XT has been a good improvement over my 7900XT for me. It is definitely more effecient and a big surprise are some games are even spending ~1/3 of their time in fan stop because the card isn't working as hard :cry:

If the 9070XT had been closer to 7900XT performance in the reviews I trust for the games I play, I wouldn't have bothered and would have stayed on Windows with VRR for the games which can't quite manage 4K60, but I found a Nitro+ XT for enough under Sapphire's recommended price and it was worth getting for my specific intended use.
 
Yeah I spent a bit extra and opted for 9070XT in the end, I was coming from a RX 5700 so either would have been a big improvement. I just remember reading about the FSR stuff when trying to decide, basically from what I read AMD will continue to update FSR3 but RDNA3 cards won't get FSR4 due to lacking full hardware support.
 
Ah, nice. Either card would be quite the jump.

I suspect FSR 3.x is going to around for quite a while yet. The new Zen 6 apus have rdna 3.5 graphics built in, so they can’t support FSR4 either. Even recent code AMD have added to their gpu open source code has some parts marked dgpu only, which in reality means 90xx series only.

There has been speculation about parts of FSR4 being made to work on 7900 series cards because they have some of the hardware that is on the 90x0 series and FSR4 is an evolution of 3.1 with new hardware.

The hardware added to the 7900 series with the extra memory (20/24Gb) actually benefits productivity applications rather than gaming. RDNA4 and the 90x0 series add the hardware useful to gaming.

There may be some optimisations from FSR4 they can back port to FSR3 and with Zen 6 only having rnda3 hardware I think that is more likely than saying 7900 series cards will get partial FSR4 or launching an FSR4 light edition. Only time will tell.
 
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Ask you shall receive

Behold FSR4 running on RDNA3 GPUs

wccftech.com

AMD FSR 4 Enabled On Radeon RX 7000 "RDNA 3" GPUs, Higher Image Quality, Higher FPS Than Native 4K But Lower Versus FSR 3.1

A user on Reddit has managed to enable AMD's FSR 4 upscaling on a Radeon RX 7000 "RDNA 3" GPU, leading to improved FPS & image quality.
wccftech.com wccftech.com



Beware, while FSR4 offers superior image quality, rdna3 doesn't have the hardware acceleration that fSR4 was designed for, due to this enabling fsr4 on rdna 3 GPUs causes framerate to drop by 40%
 
PeegeeTips said:
Performance hit vs FSR3, or vs native?

If vs FSR3 then fine; i'll take it. FSR quality + more frame than native.
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Not actually sure it is more frames than native. Though from what I've seen they still at the jumping through many hoops and translation layers phase so maybe can refine it into a usable state. It's good to know it's possible at least
 
PeegeeTips said:
Performance hit vs FSR3, or vs native?

If vs FSR3 then fine; i'll take it. FSR quality + more frame than native.
Click to expand...

From the article:
Compared to native 4K, FSR 4 at Quality can offer higher FPS. We have also seen that upscaling can lead to better image quality than native rendering
Click to expand...

Read on a YT comment that the FSR 4 performance improvement scales with resolution a lot more - so FSR 4 will offer a bigger performance uplift for those at 1440p than 4K.

In this YT video he's showing that Cyberpunk is apparently getting 39 fps native 4K, 54 fps with FSR 4, and 85 fps with FSR 3.1 - looking very promising to me :D

 
Vexr said:
Read on a YT comment that the FSR 4 performance improvement scales with resolution a lot more - so FSR 4 will offer a bigger performance uplift for those at 1440p than 4K.
Click to expand...
To add, I think RDNA3 FSR3 @ Quality is so bad in Cyberpunk, I'd rather take FSR1 with resolution scaling at 85-90%, like what I could do on my 5700 XT to try to crack 60 fps in 2020.

In modern day Cyberpunk, the FSR is still so bad that XeSS is the only option for me, which performs much like FSR4 apparently does on RDNA3, but definitely holds no possibility of being better than native image quality.

I do find weird the above reports of FSR3 in Oblivion Remastered being crap. The best implementation of FSR3 I've seen so far has been in that game. No foliage pixelating shimmer or weirdness from what I've seen. Hell, if FSR3 was as good as it is in Oblivion Remastered for me in all games, the FOMO on FSR4 would be magnitudes less.
 
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Vexr said:
To add, I think RDNA3 FSR3 @ Quality is so bad in Cyberpunk, I'd rather take FSR1 with resolution scaling at 85-90%, like what I could do on my 5700 XT to try to crack 60 fps in 2020.

In modern day Cyberpunk, the FSR is still so bad that XeSS is the only option for me, which performs much like FSR4 apparently does on RDNA3, but definitely holds no possibility of being better than native image quality.

I do find weird the above reports of FSR3 in Oblivion Remastered being crap. The best implementation of FSR3 I've seen so far has been in that game. No foliage pixelating shimmer or weirdness from what I've seen. Hell, if FSR3 was as good as it is in Oblivion Remastered for me in all games, the FOMO on FSR4 would be magnitudes less.
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likewise. i turned off FSR3 and went back to native rendering as soon as I saw Takamura's blurry kebab!
 
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I have it running on the 780m in GTA5 enhanced, looks way better than fsr 3 and performance still holds up. I think AMD will make this available officially.
 
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