Discussion RDNA4 + CDNA3 Architectures Thread

DisEnchantment · Mar 23, 2022

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

beginner99 · Jan 20, 2025

SolidQ said:
To this?

AMD Radeon™ Image Sharpening (RIS) Technology Support: RIS enhances clarity and visual detail in games by increasing sharpness, while maintaining optimal performance through built-in AI, delivering a more enjoyable visual experience.

AI RIS now? Friends love use RIS since 5700XT

$499 and $599 like I have been saying. No surprise really.

gaav87 said:
Did gigabyte put the card back on coz last i remember they removed every mention of 9070 from their page like 2 days ago ?

Maybe they were asked to take the sites down? Or worse, AMD indeed needed to lower prices a lot making the card not profitable anymore given the design?

I guess AMD expected the 5070 to be $599?

adroc_thurston · Jan 20, 2025

beginner99 said:
Maybe they were asked to take the sites down?

well yeah.

beginner99 said:
Or worse, AMD indeed needed to lower prices a lot making the card not profitable anymore given the design?

Wrong, they're jacking them tf up.

beginner99 said:
I guess AMD expected the 5070 to be $599?

It completely stomps GB205, they're not even remotely in the same perf class.

beginner99 · Jan 20, 2025

adroc_thurston said:
Wrong, they're jacking them tf up.

makes more sense to me as well.

In the blackwell thread we can see EU prices in some shops:

5090 ~ €3000
5080 ~ €1500

AMD should also make a small batch of "FE" cards at MSRP and sell the rest for 50% more. NV is just lying about price and performance and the only way to compete is to do the same.

adroc_thurston · Jan 20, 2025

beginner99 said:
In the blackwell thread we can see EU prices in some shops:

5090 ~ €3000
5080 ~ €1500

eh that's probably low supply inflated prices.

beginner99 said:
AMD should also make a small batch of "FE" cards at MSRP and sell the rest for 50% more

AIC offerings will cost higher than MBA yes.
Premium ones anyway.

coercitiv · Jan 20, 2025

Get ready for the RX 9080 boys and girls!

Yes, it's a joke, and yes, you fell for it in the first 199ms.

JustViewing · Jan 20, 2025

coercitiv said:
Get ready for the RX 9080 boys and girls!

View attachment 115267

Yes, it's a joke, and yes, you fell for it in the first 199ms.

What ??? . This is beyond silly. Are they going to rebrand all the units already shipped??🤦‍♂️

gaav87 · Jan 20, 2025

coercitiv said:
Get ready for the RX 9080 boys and girls!

View attachment 115267

Yes, it's a joke, and yes, you fell for it in the first 199ms.

199ms so 5070 latency in cb2077 pt+rt mfg4x ? xD

marees · Jan 20, 2025

JustViewing said:
What ??? . This is beyond silly. Are they going to rebrand all the units already shipped??🤦‍♂️

👇

coercitiv said:
Yes, it's a joke

gaav87 · Jan 20, 2025

marees said:
👇

And in other news rumored price from chiphell is 499 and 599$ and aib 5k+ yuan
479$ price was never real

JustViewing · Jan 20, 2025

marees said:
👇

I guess I need new glasses

Hans de Vries · Jan 20, 2025

The ~390 mm2 is reasonable accurate. The above is an equal scale comparison.

Similar die-size, process, memory size, memory bandwidth, raster and RT performance as the RTX 4080.

NVIDIA has apparently stopped selling the RTX 4080 altogether !?

https://marketplace.nvidia.com/en-us/consumer/graphics-cards/

FSR 4 looks very promising. Only wish remaining is a Multi Frame generation implementation.

RTX 5090 versus RTX 4080:

Heartbreaker · Jan 20, 2025

Hans de Vries said:
The ~390 mm2 is reasonable accurate. The above is an equal scale comparison.

What is the source of the AMD die shot?

MrTeal · Jan 20, 2025

Y'all are really dumping on my "4080 Super performance for $480" parade. Let's keep that hype train chugging for another 3 days until we meet the brick wall.

marees · Jan 20, 2025

gaav87 said:
And in other news rumored price from chiphell is 499 and 599$ and aib 5k+ yuan
479$ price was never real

9070xt between 4070 super & 4070 ti super
9070 around 4070. Definitely more than the 4060 ti 16gb

marees said:
9070 non-xt to have RT around 4070

PS5 pro will have much lower clocks compared to the vanilla 9070
so the ps5 pro should be comparable to 4060 ti super (in RT)

SolidQ · Jan 20, 2025

marees said:
9070 around 4070. Definitely more than the 4060 ti 16gb

is think it too low for just 4070, maybe 4070 super.

Hans de Vries · Jan 20, 2025

Heartbreaker said:
What is the source of the AMD die shot?

https://videocardz.com/newz/amd-navi-48-rdna4-gpu-for-radeon-rx-9070-pictured-may-exceed-nvidia-ad103-size

I did a perspective correction but the ~390 mm2 holds.

Josh128 · Jan 20, 2025

If this is accurate, there is NO WAY AMD was planning on releasing the XT for less than $799, and the non XT for less than $599. 4nm has increased in price since launch of the $1000 XTX and $899 XT. Makes complete sense now why announcement was scrapped last minute at CES but cards were there and certain slides were distributed to press. They were banking on Nvidia keeping launch ADA pricing per SKU, at a minimum, for Blackwell.

Heartbreaker · Jan 20, 2025

Hans de Vries said:
https://videocardz.com/newz/amd-navi-48-rdna4-gpu-for-radeon-rx-9070-pictured-may-exceed-nvidia-ad103-size

View attachment 115285

I did a perspective correction but the ~390 mm2 holds.

View attachment 115286

I've seen these before.

I meant the flat perspective one you showed before. Is that just a mockup based on the actual die shots?

carrotmania · Jan 20, 2025

1x N48 = 30mm * 5mm
128MB cache = 30mm * 3mm

30mm * 8mm is 240mm² as always quoted.

What you are seeing here is the revived N4C MCM, with a second N48 class chip on the other side of the cache. 128MB is actually overkill for N48 alone, but it's cheaper to mass produce 128MB size cache rather than a 96MB.

This is N4C: 2 * (30mm * 5mm) + 30mm * 3mm = 390mm²

It's a 5090 killer, and it's the cause of the delay.

(Is it April yet?)

Hans de Vries · Jan 20, 2025

Heartbreaker said:
I've seen these before.

I meant the flat perspective one you showed before. Is that just a mockup based on the actual die shots?

Actual die shot of the RX 9070 XT together with the AMD Ryzen CPU.

The RX 7900 XTX die sizes stem from AMD itself:
https://ir.amd.com/news-events/pres...ls-worlds-most-advanced-gaming-graphics-cards

GTracing · Jan 20, 2025

Heartbreaker said:
I've seen these before.

I meant the flat perspective one you showed before. Is that just a mockup based on the actual die shots?

The flat perspective ones are the same as those ones. He just popped it into Photoshop and stretched the image.

Heartbreaker · Jan 20, 2025

GTracing said:
The flat perspective ones are the same as those ones. He just popped it into Photoshop and stretched the image.

There's no big Radeon Logo on the actual die shots and the reflections are different. The flat perspective looks more like a mock up or render.

exquisitechar · Jan 20, 2025

390mm^2 would mean a solid loss for AMD in performance per area. Hope the other estimate of ~350mm^2 ends up being more accurate.

DownTheSky · Jan 20, 2025

Don't forget RT and AI bumps. Plus the shit bw. With GDDR7 this thing could be a monster. Well at least 5080perf.

GTracing · Jan 20, 2025

Josh128 said:
If this is accurate, there is NO WAY AMD was planning on releasing the XT for less than $799, and the non XT for less than $599. 4nm has increased in price since launch of the $1000 XTX and $899 XT. Makes complete sense now why announcement was scrapped last minute at CES but cards were there and certain slides were distributed to press. They were banking on Nvidia keeping launch ADA pricing per SKU, at a minimum, for Blackwell.

View attachment 115288

That doesn't make sense to me. If Nvidia raised the price on the 5070 to $650 then it would have worse performance per dollar than the 4070 super.

The one benchmark Nvidia released shows a 21% lead for the 5070 over the 4070 in RE4 with RT on at 1440. (This is probably a best case scenario).
TPU's 4070 super review says that the 4070 is 13% slower than the 4070 super at 1440.
$650 is 8.3% more than $600.

Multiplying those together, a $650 RTX 5070 would have 3% worse performance per dollar.

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