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

 

[inquiss]

The only important

Having used FSR2 and DLSS. AI based upscaling is much better, even XeSS is better than FSR2. It does make a difference to a lot of people. DLSS is what Intel and AMD need to beat, its mindshare is massive.

The only important metric is the one AMD does not have. Any metrics AMD has that Nvidia doesn't have are irrelevant.

 

[igor_kavinski]

So how hard is it to break Nvidia's mindshare? Do they need fail like Intel?

They learned a bit too well from their FX 5000 series failure. They haven't repeated that big a mistake yet.

 

[DiogoDX]

Insane performance rumors for a AMD card that will be way inferior.

We are so back.

 

[vanplayer]

Guy's RDNA4 = 4070ti super ~7900xt / between 5070 and 5070ti. ~+30% to 7800xt
Don't let in on the hype for 4080/7900xtx mess with you... Remember rdna3 guys...

At least non reference card have a chance.

 

[MrTeal]

So how hard is it to break Nvidia's mindshare? Do they need fail like Intel? I mean AMD did with Ryzen, who knows maybe will.

Pretty much lol.

Even with how successful Ryzen has been since Zen3 especially with the gaming chips I still don't think AMD is there. Amongst people really following along, sure. You grab the average person walking around Best Buy and show them two identical systems but one with a 9800X3D and the other with an i9? My money's on more people choosing to put the Intel system under the tree for little Johnny.

 

[igor_kavinski]

My money's on more people choosing to put the Intel system under the tree for little Johnny.

They'll learn really fast when the tree goes up in flames

Core Ultra 9, maybe, if no one at school mocks them with their 9800X3D.

 

[blckgrffn]

Even with how successful Ryzen has been since Zen3 especially with the gaming chips I still don't think AMD is there. Amongst people really following along, sure. You grab the average person walking around Best Buy and show them two identical systems but one with a 9800X3D and the other with an i9? My money's on more people choosing to put the Intel system under the tree for little Johnny.

Yes, but mindshare has shifted a lot.

The number of prebuilt AMD desktops included in sales right now has to be a high water mark. So to in laptops. 4-5 years ago or so this would have been unthinkable.

And if Intel doesn’t right the ship? 4-5 years from now could show them massively relegated.

This halo effect has to play into GPUs a bit but I really think it just isn’t the focus right now. Getting to a unified architecture to better emulate Nvidia in multiple markets sure looks like it might be the focus though.

 

[gdansk]

Anyone pushing rumors that it performs better than expected are malicious. It is clearly not mere stupidity anymore.

I don't know why they do it.

 

[GodisanAtheist]

We're a wee bit over 6 years of RTRT hardware being in HVM.

-Some day we're going to cross over the "we've had cards capable of RTRT longer than we had cards that weren't" threshold and it's still going to feel like we're chasing the dragon.

 

[SolidQ]

6th January

https://twitter.com/x/status/1863946658381222214

 

[MrTeal]

Yes, but mindshare has shifted a lot.

The number of prebuilt AMD desktops included in sales right now has to be a high water mark. So to in laptops. 4-5 years ago or so this would have been unthinkable.

And if Intel doesn’t right the ship? 4-5 years from now could show them massively relegated.

This halo effect has to play into GPUs a bit but I really think it just isn’t the focus right now. Getting to a unified architecture to better emulate Nvidia in multiple markets sure looks like it might be the focus though.

For sure. Just personal opinion, but if Intel doesn't turn around gaming from Arrow Lake and AMD gets a couple years of just being the default answer for every gaming CPU question (9600X3D when?) then that will help AMD in the GPU space. It's certainly not going to take the shine off Nvidia, but it's natural for people to see excellence in one area and transfer that to other places. At the least it might help overcome some of the turning up the noses people get when they do go AMD for a GPU.

 

[adroc_thurston]

then that will help AMD in the GPU space

Nope.
The proles treat GPU BU as a very very separate part of AMD.

 

[gdansk]

Nope.
The proles treat GPU BU as a very very separate part of AMD.

Yes, until they're glued together the people don't care (nor should they).

 

[adroc_thurston]

Yes, until they're glued together the people don't care (nor should they).

not even that, it's just that the perception doesn't quite transfer

 

[gdansk]

Unrelated but the size must be larger than 300mm².

 

[adroc_thurston]

Unrelated but the size must be larger than 300mm².

no, that's too big for mainstream.

 

[poke01]

The only important

The only important metric is the one AMD does not have. Any metrics AMD has that Nvidia doesn't have are irrelevant.

Yep, when you are the market leader that happens. Consumers find something to harp on, DLSS is fair play but RT is meh currently.

 

[gaav87]

no, that's too big for mainstream.

Intel: Hold my bible.

 

[beginner99]

From article.

- 25% power
+ 45% RT ( Bioharzard 4RE )
= Raster ( 4080/4080S )

Yeah no way this is true with the info we already have about die size.

 

[SolidQ]

where 8700?

https://videocardz.com/newz/amd-confirms-radeon-rx-8600-and-rx-8800-rdna4-gpu-series

 

[poke01]

where 8700?

https://videocardz.com/newz/amd-confirms-radeon-rx-8600-and-rx-8800-rdna4-gpu-series

If the 8600XT has 12GB, that could be a popular card depending on price

 

[SolidQ]

FP8

If the 8600XT has 12GB, that could be a popular card depending on price

Mb 8700 is 12GB N48?
for me doesn't make sense skip 8700 unless, it's like was with NV 8xxx series only 8600/8800
I think possible like this
8600 - N44 8GB
8600XT - N48 12GB

8800 - N48 16GB
8800XT - N48 16GB

 

[igor_kavinski]

where 8700?

I guess they don't care since 7700 XT was never a good SKU to begin with. Priced totally wrong. Would've served them better to release the 7700 XT as 7600 XT.

 

[igor_kavinski]

for me doesn't make sense skip 8700 unless, it's like was with NV 8xxx series only 8600/8800

The 7700 XT does not compete with 4070. It's a sad SKU. Dunno why AMD couldn't have positioned it to beat the RX 6800 by at least 10%. But I would expect them to release a RX 8800 GRE which should beat a 4070 Super.

 

[SolidQ]

The 7700 XT does not compete with 4070

isn't it's cost now like 4060ti?

But I would expect them to release a RX 8800 GRE which should beat a 4070 Super.

Maybe like this?
8600 = 4060ti+
8600XT = ~7800XT
8800 = ~7900XT
8800XT = ~7900XTX