Question Speculation: RDNA2 + CDNA Architectures thread

[uzzi38]

All die sizes are within 5mm^2. The poster here has been right on some things in the past afaik, and to his credit was the first to saying 505mm^2 for Navi21, which other people have backed up. Even still though, take the following with a pich of salt.

Navi21 - 505mm^2

Navi22 - 340mm^2

Navi23 - 240mm^2

Source is the following post: https://www.ptt.cc/bbs/PC_Shopping/M.1588075782.A.C1E.html

 

[Glo.]

AMD Radeon RX 6800 Review

The Radeon RX 6800 is the world's most power-efficient graphics card, better than anything NVIDIA Ampere has to offer. The smaller brother to the RX 6800 XT comes with a smaller heatsink, at more affordable pricing, but retains the lavish 16 GB VRAM memory buffer.

www.techpowerup.com

This is absolutely mental efficiency.

Actually, reviews on TPUs site show way lower performance and power draw numbers compared to other sites.

They must have made some errors in testing.

 

[Hitman928]

Scrap that review.

TPU has done some errors in their testing, since both their power draw, AND performance numbers are way lower than anybody else's.

Yeah, looking at other sites, TPU's power numbers are way too low.

 

[exquisitechar]

RT performance is all over the place. Good in Dirt 5 and Watch Dogs, behind in everything else (sometimes horribly so).

 

[.vodka]

RT performance is all over the place. Good in Dirt 5 and Watch Dogs, behind in everything else (sometimes horribly so).

I guess there's some optimization to be done in this case, as all current games have their RT implemented and optimized against nV's way of doing things. A patch or two later could improve that.


Rasterization performance is awesome.

 

[leoneazzurro]

RT performance is all over the place. Good in Dirt 5 and Watch Dogs, behind in everything else (sometimes horribly so).

AMD and Nvidia implementations differ quite a bit, so if someone was expecting RTX optimized games (or tech demos) to run well on 6800 series they are seriously naive. Not saying that Dirt5 is representative of what we can expect, but as in all things thuth is in the middle. And btw, expect ray tracing being the "next optimization war".

 

[Antey]

it's better than a 3090 at 1080p but worse at 4k... that gpu needs GDDR6X (or a wider bus)

 

[Shivansps]

Looking a the numbers, the RX6800 is making me want to buy a 3070, wth is going on here?

 

[leoneazzurro]

Looking a the numbers, the RX6800 is making me want to buy a 3070, wth is going on here?

It's only your green bias, nothing more nothing less

 

[Glo.]

RT performance is all over the place. Good in Dirt 5 and Watch Dogs, behind in everything else (sometimes horribly so).

Is Watch Dogs DXR 1.1 title?

If so, then we have an answer.

 

[Shivansps]

It's only your green bias, nothing more nothing less

You are saying that costing $80 more and having no performance to back it up has nothing to do with it?

But keep it up, i love these kind of hate driven comments directed to the poster just because.

 

[leoneazzurro]

You are saying that costing $80 more and having no performance to back it up has nothing to do with it?

But keep it up, i love these kind of hate driven comments, it means im asking the right questions.

A silly post calls for a silly answer. What performance do you seek? Rasterization performance of the XT is way above 3070 and Ray tracing is similar in Nvidia optimized titles. 6800 is confortably above 3070 in rasterization, not so behind in RT NV optimized titles and it will likely perform good in new titles, and it has future proof amount of VRAM. So I wonder who is hating who in your comments.

 

[exquisitechar]

It's only your green bias, nothing more nothing less

Frankly, the 6800 is a disappointment. I was expecting it to have a larger lead over the 3070, and the rumors of a sizable OC headroom didn't pan out. Not that I would buy a 3070 either.

 

[Panino Manino]

I just looked the TPU review and what is happening at 1080p?!
The Non-XT is faster than the XT card is some games.
And looks like the Infinite Cache helps nothing at 4K.

 

[leoneazzurro]

Frankly, the 6800 is a disappointment. I was expecting it to have a larger lead over the 3070, and the rumors of a sizable OC headroom didn't pan out. Not that I would buy a 3070 either.

It was not the better choice in the line, as I said in another post it had to cost less, a 40 bucks more than the 3070 would have been good. Another thing is that many (most) reviews did not use an AMD platform and the results are quite all over the place. it depends a lot on the title choice. Computebase showed that using the most recent titles is better for the 6800 line.

 

[Shivansps]

A silly post calls for a silly answer. What performance do you seek? Rasterization performance of the XT is way above 3070 and Ray tracing is similar in Nvidia optimized titles. 6800 is confortably above 3070 in rasterization, not so behind in RT NV optimized titles and it will likely perform good in new titles, and it has future proof amount of VRAM. So I wonder who is hating who in your comments.

I said 6800 not the 6800XT, i never considered buying the 6800XT or the 3080 so im looking at the 6800 vs 3070 for 1440p, even at rasterization only the 6800 is not really better than the 3070, they are trading blows. Why I should (or anyone) spend $80 more?

I expected more out of the 6800, there is really no reason other than the vram to pay the extra.

The 6800 should be $500 and perf numbers are showing that.

 

[leoneazzurro]

I said 6800 not the 6800XT, i never considered buying the 6800XT or the 3080 so im looking at the 6800 vs 3070 for 1440p, even at rasterization only the 6800 is not really better than the 3070, they are trading blows. Why should me or anyone spend $80 more?

I expected more out of the 6800, there is really no reason other than the vram to pay the extra.

7-10% advantage, 16 Gb of VRAM vs 8, better behavior in newer titles. Then, as said, It should be at least 40$ less, as the 6800XT is the most bang of the buck in the line. And don't undervalue the VRAM amount: 6 Gbytes cards are starting to get VRAM limited already now, 8Gbyte cards will be in a couple of years in several titles.

 

[Veradun]

I just looked the TPU review

You shouldn't inflict this pain on yourself.

 

[CastleBravo]

RT performance is all over the place. Good in Dirt 5 and Watch Dogs, behind in everything else (sometimes horribly so).

Tom's is showing a noticeable difference in DXR image quality between the 3080 and the 6800 XT in Watch Dogs.

https://www.tomshardware.com/news/the-amd-radeon-rx-6800-xt-and-rx-6800-review

 

[Hans Gruber]

I am neutral, either the 3070 or 6800 for me. Price will determine the outcome in the next month or two.

 

[dr1337]

Tom's is showing a noticeable difference in DXR image quality between the 3080 and the 6800 XT in Watch Dogs.

https://www.tomshardware.com/news/the-amd-radeon-rx-6800-xt-and-rx-6800-review

Seems to be some kind of bug/issue with the settings. Also the AMD image has TAA on while the nvidia image has absolutely no AA whatsoever and looks really jaggy.

 

[leoneazzurro]

Seems to be some kind of bug/issue with the settings. Also the AMD image has TAA on while the nvidia image has absolutely no AA whatsoever and looks really jaggy.

That was writen in the known issues for the press driver, so it should be solved in a later driver release.

 

[Hitman928]

Tom's is showing a noticeable difference in DXR image quality between the 3080 and the 6800 XT in Watch Dogs.

https://www.tomshardware.com/news/the-amd-radeon-rx-6800-xt-and-rx-6800-review

Yep, I just saw that as well. Could very well explain why the AMD cards perform so well there compared to earlier titles, they aren't calculating as much ray tracing. So that just leaves Dirt 5 (at least until watch dogs gets sorted out for sure) which I believe is not doing a lot of ray tracing. It could come down to how heavily ray traced the game is and the heavier it is, the worse AMD cards will perform comparatively. We'll have to wait to see how more DXR1.1 titles run on AMD cards, but so far it looks like if DXR is an important part of your buying decision, you should probably go Nvidia.

 

[Bouowmx]

RDNA 2 INT32 throughput is the same as FP32, like NVIDIA Turing. Any review with AIDA64 GPGPU test to verify?

 

[Shivansps]

The Guru3D results for the RX6800 looks good compared to the 3070.

 

[EXCellR8]

Love me some Guru3D