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[supernova8]

As I said, RT hardware step alone doesn't produce anything palatable, you can't disable everything else and get it rendered, you could, perhaps, disable some of the "other steps".



That's curious, ignoring what wccf is, but far from obvious, what it is being tested to begin with.
It's the demo that was first shown on Vega GPU, with no hardware RT being used, I'm puzzled if it is used in this demo at all.

The hardware intersection bit I'm referring to, is about "up to" number, of NV claimed "up to 10 billion intersection" for Ampere (which is 10 times more than Tesla ) per second, vs AMD's... 380 billion on XSeX. (again: up to)

XSXs Ray Tracing Performance vs Nvidia

Microsoft has said that the XSX can do 380 billion intersections per second. "RDNA 2 fully supports the latest DXR Tier 1.1 standard, and similar to the Turing RT core, it accelerates the creation of the so-called BVH structures required to accurately map ray traversal and intersections, tested...

www.neogaf.com

Fishiness of "up to" aside (e.g. imagine "it's that many if all structures fit into LL1 cache") "It is largely not about intersections at all" explains, why we do not see even remotely as major RT perf jump as it is claimed.

Last, but not least, how many Crytek RT engine based games are out there? Not even one, right?

They gave a breakdown of the specs. Besides, if as you suggest there no was RT in the demo at all, AMD would win anyway because they have better raster performance, no?

CRYENGINE | Neon Noir Ray Tracing Benchmark

Note: This product comes with a custom EULA. You will find it in your download folder. We are delighted to share ‘Neon Noir,’ a free ray tracing benchmark based on the ray tracing demo of the same name, which was made available as a video during GDC 2019. Neon Noir was developed on a bespoke...

www.cryengine.com

You can find the details here. I personally don't care to read it.



DF did their own video on it anwyay. The RTX cards clearly beat the RDNA cards and again if you look at the WCCF video, the new RTX cards beat the RDNA2 cards.

I'm not entirely what you're criticizing about the ray tracing demo to be honest. In the DF video they explain that it's using "SVOGI" or some sort of method of using a simplified version of the geometry to generate ray tracing information (which is not as accurate as "proper" ray tracing) and then adds additional ray tracing info on top for moving objects.

Either way, the NVIDIA cards seem to win.

I think I sort of get what you're trying to say but the whole "in theory AMD should be better" counts for very little until AMD is actually (consistently) better.

 

[Ascend]

There likely is a bug with AMD's RT, either in software or in hardware. After RT was enabled in Quake II RTX for the radeon cards, a comparison was made between the RTX 3080 and the RX 6800XT. Why this game? Because it has a nice feature that breaks down how much time each aspect of the rendering is taking, and in that game in particular, the 3080 is over 300% faster at BVH Update compared to the 6800XT;

Aside from that, the differences with regards to RT are mostly minor. Even more interesting is the fact that a 1080 Ti, which has no RT cores, does the BVH update at 0.47 ms, compared to the 1.38 ms of the 6800XT. That is the main bottleneck in RDNA2, because otherwise it's not really (significantly) worse on average.

As seen above, AMD is better at shadow maps and refraction in general, while nVidia is better at rays in general. But something is going on with AMD's BVH Update. Games will perform better on nVidia if they use more rays, while they would perform better on AMD if they use more refraction, except the BVH update throws that in the dust. And that is not part of the RT cores, because, as mentioned earlier, the 1080Ti does it faster than the 6800 cards.

 

[llien]

They gave a breakdown of the specs. Besides, if as you suggest there no was RT in the demo at all, AMD would win anyway because they have better raster performance, no?

No.
As my argument was actually that it was non-RT stuff optimized for NV that gives it edge in NV sponsored RT games.

You can find the details here.

It is even titled "SOFTWARE ray tracing" .

I think I sort of get what you're trying to say but the whole "in theory AMD should be better" counts for very little until AMD is actually (consistently) better.

I'm saying "it's not about RT hardware... at all".
AMD would need to bother and write code that runs better on their platform, or just onboard more developers, the way they did with Dirt5/GodSomething, but those bits have nothing to do with "ray tracing hardware".

In the chart Ascend put above, BHV update is the bit that shows the biggest difference, yet it is not something that is accelerated by RT hardware, it's just piece of code developed by NV and, of course, they aimed to optimize it for the own hardware.
And "but it's faster at raster" doesn't really apply here, AMD being faster at code developed specifically to use green card strength would mean worse than Intel's Zen3 situation in GPUs.

 

[llien]

 

[Ascend]

 

[D.Final]

The tech master

 

[TheContact]

6700XT with 12GB spotted

Gigabyte Radeon RX 6700 XT Custom Graphics Cards With 12 GB GDDR6 Memory Spotted at EEC

Gigabyte just like every other major manufacturer is getting ready for the launch of AMD's Radeon RX 6700 XT graphics card.

wccftech.com

 

[Ascend]

 

[Ascend]

AMD Radeon RX 6700 XT to launch on March 18th - VideoCardz.com

AMD Radeon RX 6700XT has a release date According to a tweet from Cowcotland, AMD is set to launch its next graphics card on March 18th. AMD Radeon RX 6700 series were already rumored to launch in March. We have only heard that the launch would happen in mid-March, but now it seems that the […]

videocardz.com

 

[lefty1117]

what about 6900 xt

from what I can tell it's 100 more than 6800

 

[Ascend]

Sapphire brought the Toxic brand back;

 

[smbu2000]

Well I ended up selling my vanilla 6800 and managed to pick up a 6800XT. (MSI Gaming X Trio)
Ended up being not too much to upgrade to the 6800XT, so I went for it.
Thought about the 6900XT, but there was a much bigger price difference for one of those, so I didn't get it.

Happy with the 6800XT so far!
(My System is a 5900X with an Aorus X570 Xtreme)

 

[llien]

Yet another unobtanium to be released on 3rd of March:

 

[Ascend]

That card looks just as long as the 6800/6900 cards...

 

[Ascend]

 

[Ascend]

 

[Ascend]

Nobody seems to care, but...;

 

[Outlier]

Nobody seems to care, but...;

Well I mean... Who would care, now?

It's not like we can get these cards. Hahha

I have a 5700 XT and the 20-25% improvement is not worth it, for me.

Just waiting for next-gen, now.