AMD Radeon RDNA2 Navi (RX 6500, 6600, 6700, 6800, 6900 XT)

[techuse]

Is math throughput the bottleneck in DLSS cost?

 

[dobwal]

Ye, maybe, i am the wait-and-see kind of person. If AMD, sony says so il believe that, its still too vauge though. NV is apparently using its local tensor core hardware to achieve the results we get with DLSS. If RDNA2 gpus do it on the CUs (like partially RT), then im wondering how and if that impacts performance somehow.
DLSS isnt just a software solution.

I guess it will come down to how much compute do you need to render at something like 4k vs render at lower resolution + a super resolution solution.

 

[chris1515]

Only if it makes any sense to do so. Just because something is new and popular doesn't make it the best tool for the job. UE4's new TAA gets results similar in quality to DLSS at a lower performance cost.

What many devs really want is a TAA tool that's easy to set up. Today's TAA can be a full time job of setting up dynamic res, tweaking everything per title, etc etc. If "Super Resolution" can cut down on that in a performant and good enough looking matter it will be a success.

I said it better than what they have before. Be patient, you can see the result and after you can say what you think about it.

 

[Dictator]

Only if it makes any sense to do so. Just because something is new and popular doesn't make it the best tool for the job. UE4's new TAA gets results similar in quality to DLSS at a lower performance cost..

Did you see the TAAU vs. DLSS 2.0 results from the DLSS 2.0 presentation? TAAU definitely has much lower quality from the same internal resolution as DLSS 2.0.

 

[chris1515]

Did you see the TAAU vs. DLSS 2.0 results from the DLSS 2.0 presentation? TAAU definitely has much lower quality from the same internal resolution as DLSS 2.0.

But AMD does not have it, this is bad, if Sony and MS have an ML based reconstruction it will be bad they are part of a conspiracy against AMD with Nvidia.

 

[NightAntilli]

The game has a built-in profiler that shows this kind of stuff nicely. This is on an RTX 3080 at 1440p, mostly default settings I think (GI high):

View attachment 5106

Asvgf full is the denoiser cost. Would be nice to see some profiler shots from Radeons.

Just tested Quake II RTX on my overclocked RX6800XT and I'm happy with how it performs as I had very low expectations to start with.
Good news is, it works and it performs better than RTX2060 I had a chance to play on previously.

Full details with Upscaling AA:
1920x1080 = 79FPS on Demo1 map
2560x1440 = 48FPS on Demo1 map

I took few photos as screen grab was turning black screens form fullscreen mode.

Top pictures are QHD and the last two are FHD

We should get one person with an RTX 3080 and one with an RX6800 to stand in the exact same spot in the game, with the same settings, and get the profiler shots from both cards. We can then normalize the numbers, and we can get an idea which card is better at which function. The shots are currently too different to make educated estimates.

 

[Man from Atlantis]

We should get one person with an RTX 3080 and one with an RX6800 to stand in the exact same spot in the game, with the same settings, and get the profiler shots from both cards. We can then normalize the numbers, and we can get an idea which card is better at which function. The shots are currently too different to make educated estimates.

If there is a save file for us to compare

 

[Lightman]

Yes, we need to agree on resolution and settings, creating and sharing save file should be easy.

 

[Man from Atlantis]

Yes, we need to agree on resolution and settings, creating and sharing save file should be easy.

How's these settings or resolution?

Spoiler

 

[Lightman]

How's these settings or resolution?

Spoiler

Great, I like

Here is a link to my save in this spot:
https://we.tl/t-ji2oR2IqIG

Recording a video took about 0.5FPS to 1 FPS.
And my OC settings:

 

[Man from Atlantis]

Great, I like

Here is a link to my save in this spot:
https://we.tl/t-ji2oR2IqIG

Recording a video took about 0.5FPS to 1 FPS.
And my OC settings:

Nice, you have selected Temporal Upscaling as AA method though not Temporal AA. Time of day can change performance as well.

Running my 3080 at undervolted 1860MHz@836mV, 9500MHz MCLK, ~290W.

Temporal AA

Spoiler

Temporal Scaling

Spoiler

No performance difference, lol.

And balls to the walls setting: 2025MHz@981mV, 10875MHz MCLK, ~420W

Spoiler

Time of day:

Spoiler

cropped profiler sshots:
temporal aa ~290W

temporal upscaling ~290W

temporal upscaling ~420W

 

[Lightman]

So the save file doesn't save time of day or sky settings. Makes sense, but a bit inconvenient for what we need.

This time grabbed screenshot properly with Temporal AA and same sky settings:

 

[Man from Atlantis]

 

[NightAntilli]

So the save file doesn't save time of day or sky settings. Makes sense, but a bit inconvenient for what we need.

Do the sky settings or time of day influence the overall load seen in the profiler significantly? We can test this by maybe loading the save 5 times (for example) with the same settings, and looking at how different the profiler looks.

 

[Ethatron]

...

Looks like AMD is [at times] better at inhoherent rays (all the reflect ones), and worst at coherent ones (primary ray). Which is great and "logical", seems the cache does it's job.
BVH construction is probably naive for the moment, hypothetically a developer might be able to do a better version kinda quickly.

 

[dorf]

The difference in denoising (asvgf full) is pretty surprising. Maybe well optimized for Nvidia arch and not at all for RDNA2.

 

[DegustatoR]

BVH construction is probably naive for the moment

Or AMD is doing it all on CPU while NV is partially using GPU. Do we know how RDNA2 handle BVH builds/updates?

The difference in denoising (asvgf full) is pretty surprising. Maybe well optimized for Nvidia arch and not at all for RDNA2.

Denoising is pure math, is it? More flops win?

 

[Lightman]

Excellent job with the table!

I have also now noticed your edit with 420W OC results, not the most efficient settings given gains of less than 1ms at the cost of 127W, but I love squeezing every drop of performance like that! Shame my card is so far power limited due to lack of BIOS flashing tool.
Now we need someone with 1st gen RTX card to add results ... Oh wait! I have 2060RTX in a laptop! Be right back

Had to do driver update for new version of Quake to work with Vulkan, so took a bit longer.

Please ignore wierd colors, they are fine in game, just MSI Afterburner's screen capture is not working properly.

https://ibb.co/dtzWqnV
https://ibb.co/cx56T1C

 

[Lightman]

Do the sky settings or time of day influence the overall load seen in the profiler significantly? We can test this by maybe loading the save 5 times (for example) with the same settings, and looking at how different the profiler looks.

Sky setting doesn't change performance, just colour palette.

As for time, it doens't progress in the game, but you can toggle it via menu or by pressing "/" on the keyboard.

The results are as follows:
https://ibb.co/FHvnghk
https://ibb.co/GQSj7pV
https://ibb.co/ZYWsKSh
https://ibb.co/7v379pP

 

[NightAntilli]

Sky setting doesn't change performance, just colour palette.

As for time, it doens't progress in the game, but you can toggle it via menu or by pressing "/" on the keyboard.

The results are as follows:
https://ibb.co/FHvnghk
https://ibb.co/GQSj7pV
https://ibb.co/ZYWsKSh
https://ibb.co/7v379pP

That looks close enough to me, despite the differences. Time doesn't vary the pattern that much.