Discussion RDNA4 + CDNA3 Architectures Thread

[DisEnchantment]

With the GFX940 patches in full swing since first week of March, it is looking like MI300 is not far in the distant future!
Usually AMD takes around 3Qs to get the support in LLVM and amdgpu. Lately, since RDNA2 the window they push to add support for new devices is much reduced to prevent leaks.
But looking at the flurry of code in LLVM, it is a lot of commits. Maybe because US Govt is starting to prepare the SW environment for El Capitan (Maybe to avoid slow bring up situation like Frontier for example)

See here for the GFX940 specific commits

History for llvm/lib/Target/AMDGPU - llvm/llvm-project

The LLVM Project is a collection of modular and reusable compiler and toolchain technologies. - History for llvm/lib/Target/AMDGPU - llvm/llvm-project

github.com

Or Phoronix

More AMD "GFX940" Enablement Work Landing In LLVM - Phoronix

www.phoronix.com

There is a lot more if you know whom to follow in LLVM review chains (before getting merged to github), but I am not going to link AMD employees.

I am starting to think MI300 will launch around the same time like Hopper probably only a couple of months later!
Although I believe Hopper had problems not having a host CPU capable of doing PCIe 5 in the very near future therefore it might have gotten pushed back a bit until SPR and Genoa arrives later in 2022.
If PVC slips again I believe MI300 could launch before it

This is nuts, MI100/200/300 cadence is impressive.



Previous thread on CDNA2 and RDNA3 here

Question - Speculation: RDNA3 + CDNA2 Architectures Thread

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...

forums.anandtech.com

 

[SolidQ]

Here is in game bench 7900XTX OC vs 4090 OC

add screen

 

[Hitman928]

Crazy good performance in this game if the IGN guy didn't mess something up in the settings.

 

[In2Photos]

So it's the 9070XT that has 4090 like performance for $550 and not the 5070?

 

[Hitman928]

So it's the 9070XT that has 4090 like performance for $550 and not the 5070?

AMD cards outperform in this game, but just the increase over the 7900XTX is really good. We'll obviously have to wait for reviews to see if this is both a real result and if it carries over to other games.

 

[SolidQ]

We'll obviously have to wait for reviews to see if this is both a real result and if it carries over to other games.

yeah let's wait other, but also maybe that why NV reduced prices in 5xxx series?

 

[RnR_au]

AI exp is so bad on AMD i gave up like 8months ago even bing is better... In the begining of AI craze like 2+ years ago u litterary had to know python to use it with way way way way worse results and perf vs rtx 3000 and 4000. You have so many models for nvidia its not even fair.

This is so very very out of date. There are plenty of AI backends that can run all the popular models on AMD, Intel and Nvidia cards - even simultaneously.

AMD is not suffering from a lack of models. They are suffering from the teething problems of getting rocm installed.

 

[gaav87]

Well my top30 timespy 6800xt just got shat on by 9070xt with alpha drivers.
Whooping 45% faster.

 

[RnR_au]

You need fast interconnect between them to make it work like one 96 GB card, otherwise it's 2 48 GB cards

Only for training and fine tuning. For inference, modern pcie speeds are enough if you are splitting the model by rows, and pcie 1.1 speeds are enough if you are doing splitting by layers.

 

[Jan Olšan]

https://videocardz.com/pixel/xfx-teases-january-24-radeon-rx-9070-news-and-confirms-navi-48-gpu-asus-has-new-box-design-for-rdna4-series

January 24 date for unveiling or reviews or launch (unveiling at least).

 

[adroc_thurston]

if the IGN guy didn't mess something up in the settings.

I don't think he could or was smart enough for that.

So it's the 9070XT that has 4090 like performance for $550 and not the 5070?

no, RDNA overperforms in CoD. But still a really really solid result vs RDNA3.

 

[poke01]

fire the person who stopped RDNA4 halo…

 

[Heartbreaker]

9070xt 14% faster than 7900xtx lol

View attachment 114456

How do we know it's an 9070XT? The story says 9070...

 

[insertcarehere]

I don't think he could or was smart enough for that.

The RTG marketing person who no doubt had a hand in this 'leak' could though, and I wouldn't put it above them to do that.

Good to know that Q1 2025 means January and not April though, suggests that they're at least somewhat confident of how this will perform.

 

[SolidQ]

How do we know it's an 9070XT? The story says 9070...

That would be too crazy if that 9070 non XT

 

[adroc_thurston]

The RTG marketing person who no doubt had a hand in this 'leak' could though, and I wouldn't put it above them to do that.

evulz AMD ninjas again (you're really overestimating how much they care and how competent they are).

Good to know that Q1 2025 means January and not April though, suggests that they're at least somewhat confident of how this will perform.

the h/w thingy has been ready for eons.

 

[Heartbreaker]

That would be too crazy if that 9070 non XT

Well all the performance leaks were completely wrong.

 

[gdansk]

Well all the performance leaks were completely wrong.

Because of alpha drivers. Which means this one too.

 

[adroc_thurston]

That would be too crazy if that 9070 non XT

it's always the top SKU demoed

 

[GodisanAtheist]

WTF is this AMD doing some sort of hype-train-ception or something?

 

[gdansk]

WTF is this AMD doing some sort of hype-train-ception or something?

Crash it. Re-rail it. Crash it again? AMD's marketing is beyond mortal comprehension. Although not due to competence at any level.

 

[adroc_thurston]

WTF is this AMD doing some sort of hype-train-ception or something?

I think they expect to get rolled over but it didn't really happen.

 

[GodisanAtheist]

Crash it. Re-rail it. Crash it again. AMD's marketing is beyond mortal comprehension. Although not due to competence at any level.

We thought they were playing checkers but it was actually 5d parrises squares the whole time...

 

[Saylick]

So... will RDNA 4 be a shower or a grower?

https://twitter.com/x/status/1876832911480991811

 

[igor_kavinski]

9070 XT models look pretty chonky. 350W TDP? Like an XTX? But delivering less performance at that TDP?

 

[gdansk]

So... will RDNA 4 be a shower or a grower?

https://twitter.com/x/status/1876832911480991811

I measure it from a different method and also reached 388mm2. Big boy, much more believable than rumors.
And also

Unrelated but the size must be larger than 300mm².