Question Speculation: RDNA3 + CDNA2 Architectures Thread

[uzzi38]

Man I have been dying to make this one for a while now.

First rumours for RDNA3 are here so new thread time!

Just going to start off with this one for now: kopite7kimi on Twitter: "@VideoCardz Ah, I mean a simple mcm design with 10240 cores is not enough. Because the lift from RDNA2 to RDNA3 is much bigger than from RDNA1 to RDNA2. We should expect many big improvements in GFX11. 🤔" / Twitter

 

[Heartbreaker]

With FSR3 are the "AI Accelerators" finally being used?

FSR3 including the new Fake Frame Generator, is still going to run on older generations of AMD and NVidia cards so I would say, no, it's still a compute program.

 

[Panino Manino]

FSR3 including the new Fake Frame Generator, is still going to run on older generations of AMD and NVidia cards so I would say, no, it's still a compute program.

If AMD is really working like this is so absurd.
If they put the hardware there why not to use it? I mean, not to make it exclusive on RDNA3, but making it faster or more accurate on RDNA3.

 

[RnR_au]

If AMD is really working like this is so absurd.
If they put the hardware there why not to use it? I mean, not to make it exclusive on RDNA3, but making it faster or more accurate on RDNA3.

The algorithm is not dependent on specific hardware to run nicely, but I'm sure that the driver will implement all the tricks to make it run as fast as it can on each supported hardware platform. If it makes sense to use the AI Accelerators on the 6000 and 7000 series, they will be used.

 

[Rigg]

$500 was the only price top N32 had a chance to succeed. Some of us got shouted down in this thread for pointing that out several months back while others were pipe dreaming about top N32 having 6950xt performance. I'm glad they didn't botch the price.

I'm not super enthused about this card being called a 7800XT but with the 7900 naming scheme already being butchered, and the price being right, I guess it's a minor gripe. I was really hoping for a little better power efficiency as well. Regardless, 7800xt is a good offering in the current market despite being a little late to the party.

7700xt should be closer to $400 IMO. $450 is clearly an up sell price for early adopters. I see AMD hasn't given up on it's PSYOP marketing strategy. These should be a decent buy a few months from now when they are discounted. I'd probably go for a $400 6800 over a $450 7700xt . I'll wait for benchmarks before completely writing it off as DOA though.

 

[jpiniero]

7700xt should be closer to $400 IMO. $450 is clearly an up sell price for early adopters.

Given that the GCD is so slightly cut the 7700 XT makes no sense from a salvage POV. Maybe AMD will get it right this time and the supply of the 7700 XT will be little.

AMD could have cut the 7800 XT down to 56 CUs and not hurt the performance much.

 

[Rigg]

Given that the GCD is so slightly cut the 7700 XT makes no sense from a salvage POV. Maybe AMD will get it right this time and the supply of the 7700 XT will be little.

AMD could have cut the 7800 XT down to 56 CUs and not hurt the performance much.

It's a nonsensical SKU in general. This is shaping up to be the N32 version of the 7900XT launch. Can't wait for the saucy you tube vid titles on review day.

 

[Tuna-Fish]

Given that the GCD is so slightly cut the 7700 XT makes no sense from a salvage POV. Maybe AMD will get it right this time and the supply of the 7700 XT will be little.

AMD could have cut the 7800 XT down to 56 CUs and not hurt the performance much.

Can't be cut to 56. The rules are simple: You cut WGPs, not CUs (so 2 CUs at a time), and every enabled SE must have the same amount of WGPs.

N32 has 3SE with 10 WGPs, so the possible cuts are:
60 (3*10), 54 (3*9), 48 (3*8), 42 (3*7), 40 (2*10), 36 (3*6 or 2*9) ...

 

[jpiniero]

Can't be cut to 56. The rules are simple: You cut WGPs, not CUs (so 2 CUs at a time), and every enabled SE must have the same amount of WGPs.

N32 has 3SE with 10 WGPs, so the possible cuts are:
60 (3*10), 54 (3*9), 48 (3*8), 42 (3*7), 40 (2*10), 36 (3*6 or 2*9) ...

Ah you're right. I meant the same as the 7700 XT's GCD, which is 54. The reason the 7700 XT is seemingly much slower is because of the memory bandwidth.

 

[USER8000]

Someone who wants to save $100. But those people probably already bought the 6800 XT.

Actually $200 as the starfield code is for the premium edition which is $100. With 16gb of vram it should last a long time.

 

[Mopetar]

If they can manage the perf uplift without animation glitches and artifacts, it could be an important selling point.

I wouldn't count on AMD's implementation being better than NVidia's. Even if it were, it's still an awful feature that no one should use.

Now NV and AMD can market against each other about who can make the most fake frames.

https://media.tenor.com/65jRkhUA2MIAAAAd/yaaay-saturday-night-live.gif

As long as it's not a forced on option, then, whatever, lol.

I hope AMD offers a setting that just takes the idea to a ridiculous extreme. Even if it looks like crap, it would still be funny to see them spit in NVidia's face like that just to have bigger bars.

What's interesting is that it's such a tiny cut of the GCD. The 7700 XT is a pointless product.

It only exists to make the 7800 XT look even better. It'll eventually get a price cut because it really should only be a $400 GPU, but even then it'll stack up well against the 8 GB 4060 Ti so people will still buy it. AMD is just hoping to squeeze an extra $50 out of anyone who's foolish enough to buy one before that price cut.

It seems that gap could be filled better with 7600 + 16 GB of memory.

7600 is too weak and 16 GB of VRAM is wasted on it since the bandwidth wouldn't be any better and the other hardware just as anemic.

 

[Panino Manino]

The algorithm is not dependent on specific hardware to run nicely, but I'm sure that the driver will implement all the tricks to make it run as fast as it can on each supported hardware platform. If it makes sense to use the AI Accelerators on the 6000 and 7000 series, they will be used.

Will they? That's the question.
With AMD is can always expect the worst.

 

[AtenRa]

There is definitely going to be another cut of N32. 7700XT has disabled one WGP per SE, any dies with more than one fault per SE (including ones where a fault hits between WGPs) is not going to be usable as 7700XT.

I suspect there will be some time until a 7700 non-XT, though. They'd prefer you buy a more expensive cut.

Well, they did the same with Navi 22 (RX6700 and RX6700XT) and NAVI22 is 335mm2 not 200mm2 NAVI32 is, did you see them made another cut down SKU from NAVI22 all that time ??? not to mention 6700 is very scarce to find nowadays
They didnt even release globally the RX7900 GRE that is 300mm2 die, I believe they are more than happy to compete between 4060 and 4060Ti 8GB with RX6750XT at $350.

 

[DeathReborn]

RDNA 3 portfolio is complete, no more cards with RDNA3.

AMD Radeon Chief confirms Radeon RX 7000 (RDNA3) portfolio "is now complete" - VideoCardz.com

Radeon RX 7000 series are complete, confirms Radeon Chief After the Gamescom product announcement, Scott Herkleman (AMD’s Senior Vice President & General Manager Graphics Business Unit) sat down for a quick chat to talk about these products. Yesterday, AMD unveiled its latest additions to the...

videocardz.com

 

[Heartbreaker]

If AMD is really working like this is so absurd.
If they put the hardware there why not to use it? I mean, not to make it exclusive on RDNA3, but making it faster or more accurate on RDNA3.

The "AI Hardware" on 7000 series, is much like the "AI hardware" on 6000 series. It's general compute cores, but now enhanced with dual issue, WMMA, and a marketing name upgrade, but it's essentially the same thing.

It's an incremental upgrade, not a change in direction or fundamental capability.

 

[GodisanAtheist]

The "AI Hardware" on 7000 series, is much like the "AI hardware" on 6000 series. It's general compute cores, but now enhanced with dual issue, WMMA, and a marketing name upgrade, but it's essentially the same thing.

It's an incremental upgrade, not a change in direction or fundamental capability.

-Yep, AMD adheres to the Alton Brown GPU design philosophy: no single use tools.

If AMD has the choice between dedicated hardware and a lesser solution that works on specialized SPs, it does the later every time.

AMD's RT cores aren't dedicated units either, they're SPs that are beefed up to be able to do RT calculations.

NV on the other hand does dedicated units all day long.

 

[linkgoron]

RDNA 3 portfolio is complete, no more cards with RDNA3.

AMD Radeon Chief confirms Radeon RX 7000 (RDNA3) portfolio "is now complete" - VideoCardz.com

Radeon RX 7000 series are complete, confirms Radeon Chief After the Gamescom product announcement, Scott Herkleman (AMD’s Senior Vice President & General Manager Graphics Business Unit) sat down for a quick chat to talk about these products. Yesterday, AMD unveiled its latest additions to the...

videocardz.com

That's not exactly what he said. Ha also added "We may have some different versions, but they are not a new ASIC".

 

[Mopetar]

If there is another cut for N32 (or any of their dies for that matter) I expect it to be something like the 7900 GRE where it's for the Chinese market.

GCD yield is improved due to the smaller due size and so there's less need for additional bins. Defective MCDs can just be tossed, but they're so small and therefore cheap that it doesn't matter.

The number of dies that can't even meet the 7700 XT qualifications will already be low so any kind of mass market product seems out of the question. Either the create a special OEM-only part or they make something specific for the Asian market.

 

[SolidQ]

I believe they are more than happy to compete between 4060 and 4060Ti 8GB with RX6750XT at $350.

and seems left it for RDNA4 window

 

[Heartbreaker]

7900 GRE has lower performance than 7900 XT... And it's just a rumor.

And it looks like the pattern may hold, latest update to the 6750 GRE rumor, is that it's just an overclocked 10GB 6700 (non XT):

AMD's upcoming Radeon RX 6750 GRE reportedly just 'an overclocked RX 6700 10GB' - VideoCardz.com

AMD Radeon RX 6750 GRE is ‘an overclocked RX 6700 non-XT’ The company’s plans for a new RDNA2 desktop SKU resolves around a cut-down Navi 22 GPU. Radeon RX 6700 Series, Source: PCGamer As previously reported, AMD is preparing to release a new Radeon GPU specifically tailored for gamers on a...

videocardz.com

 

[PJVol]

So after N32 has finally been launched, can someone make it clear what its shader config is?
i.e. #SE #SA #WGP

 

[TESKATLIPOKA]

So after N32 has finally been launched, can someone make it clear what its shader config is?
i.e. #SE #SA #WGP

CU: 60
WGP: 30
SA: ? 3 or 6
SE: 3

 

[TESKATLIPOKA]

It has happened already, I know, hard to believe. But any normal non-Radeon inclined person waiting for this made the wrong choice and should have already bought an RTX 4070 during these times. Of course they couldn't have known that but all the people spreading rumors that AMD might be fixing N32 did nothing to help it.

Normal non-Radeon inclined person? It kinda sounds like every Radeon inclined person is not normal to you.

They didn't really make a wrong choice for waiting 1/2 year to see what happens with N32, because RTX 4070 is also not such a great buy for that price as you make It out to be.
Now at least they have more options to choose from, but can't say I am impressed with anything.
This whole generation is just pretty bad because prices are high.

 

[PJVol]

CU: 60
WGP: 30
SA: ? 3 or 6
SE: 3

Yeah, looks like it, and of course 2 SA/SE. Though it's not clear what makes the article's author think N32 in 7800xt could be the cut down.

 

[Heartbreaker]

Some additional AMD numbers on the new N32 cards:

Official AMD Radeon RX 7800 XT & RX 7700 XT gaming and synthetic benchmark leaked ahead of launch - VideoCardz.com

Radeon RX 7800 XT is 0.5% faster than GeForce RTX 4070, according to AMD’s own gaming tests with ray tracing Performance leak right before AMD launches its Radeon RX 7000 GPUs. HDTecnologia recently shared AMD’s official data regarding the upcoming RX 7800 XT and RX 7700 XT graphics cards set to...

videocardz.com

• Radeon RX 7800 XT 16GB vs. RTX 4070 12GB
  • RASTER: +6.9%
  • RT: -11.6%
  • AVG: +0.5%
• Radeon RX 7700 XT 12G vs. RTX 4060 Ti 16GB
  • RASTER: +15.9%
  • RT: -5.4%
  • AVG: +8.5%

 

[Saylick]

Some additional AMD numbers on the new N32 cards:

Official AMD Radeon RX 7800 XT & RX 7700 XT gaming and synthetic benchmark leaked ahead of launch - VideoCardz.com

Radeon RX 7800 XT is 0.5% faster than GeForce RTX 4070, according to AMD’s own gaming tests with ray tracing Performance leak right before AMD launches its Radeon RX 7000 GPUs. HDTecnologia recently shared AMD’s official data regarding the upcoming RX 7800 XT and RX 7700 XT graphics cards set to...

videocardz.com

• Radeon RX 7800 XT 16GB vs. RTX 4070 12GB
  • RASTER: +6.9%
  • RT: -11.6%
  • AVG: +0.5%
• Radeon RX 7700 XT 12G vs. RTX 4060 Ti 16GB
  • RASTER: +15.9%
  • RT: -5.4%
  • AVG: +8.5%

Seems half-decent based on the raster and RT performance claims, although I'm skeptical of the RT percentages since it's entirely dependent on the suite of games. I mean, c'mon... Cyberpunk 2077 shows up four times in the RT suite lol. Either way, the 7800XT is within the same ballpark as the 4070 but at ~80% of the price.