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

 

[GTracing]

Scalping amd mid-range gpu u mad ?

There are 7800 XT selling on ebay for up to $200 above MSRP right now.

 

[GodisanAtheist]

Yeah, my 980ti has been asking to be taken out behind the barn for a while now but anything at a 6700xt/3070 level has actually gone up in price post Blackwell launch it's truly infuriating.

I just want that level of performance for <$200 and I don't think it's a lot to ask for 5 year old mid range hardware but it's all going closer to $300/$350...

 

[Mopetar]

Hopefully the delayed launch means better availability for AMD. They can earn a lot of goodwill by just having cards for a reasonable price at this point.

For all the flak AMD caught for delaying their launch, I think everyone is ready to forgive them after the utter fiasco that the Blackwell launch has been so far.

 

[RnR_au]

Ebay Australia is a sad place atm. Prices for gpu hardware is remaining stubbornly high. Enterprising sellers are even putting 'Deepseek' in their titles...

 

[marees]

Kyle Bennett of HardOCP gives his estimates

RDNA4 should come in perf-wise between the 7900GRE and the 7900XT. That is way old data that I am going on. Might have edged it up to a 7900XTX, but not sure on that. I heard they pushed power envelopes to get another 5%.​

​

https://hardforum.com/threads/radeon-9000-series-on-sale-in-march.2039268/post-1046055550

 

[beginner99]

Kyle Bennett of HardOCP gives his estimates

RDNA4 should come in perf-wise between the 7900GRE and the 7900XT. That is way old data that I am going on. Might have edged it up to a 7900XTX, but not sure on that. I heard they pushed power envelopes to get another 5%.​

​

https://hardforum.com/threads/radeon-9000-series-on-sale-in-march.2039268/post-1046055550

that was the estimate when the rumours were with a sub 300mm2 die. But the die seems to be bigger than expected (~350mm2) hence why 7900xtx doesn't seem very unreasonable anymore. Plus the branding of the cards to match nvidia naming. Why would they by name place the 9070 XT with 5070 Ti if the 9070 XT was way slower?

I hope pushing power envelope is not true. a common issue with radeons for very long time making them always look inefficient.

 

[ToTTenTranz]

I hope pushing power envelope is not true. a common issue with radeons for very long time making them always look inefficient.

This is easily solvable with different operation modes triggered through the driver.

 

[marees]

that was the estimate when the rumours were with a sub 300mm2 die. But the die seems to be bigger than expected (~350mm2) hence why 7900xtx doesn't seem very unreasonable anymore. Plus the branding of the cards to match nvidia naming. Why would they by name place the 9070 XT with 5070 Ti if the 9070 XT was way slower?

I hope pushing power envelope is not true. a common issue with radeons for very long time making them always look inefficient.

Yes the die size being large is a surprise compared to initial rumours

I expect power consumption of AIB cards to be high. It allows a point of differentiation by clocking higher

If you are worried about power consumption the vanilla 9070 might be the card to go for

 

[eek2121]

That's a rather selective choice of rumor. The Vast majority have the 9070 XT launching at $600 or higher.

That was the price given to at least partners FWIW. It won’t launch at $479, not now that the U.S. is imposing tariffs. I suspect $600-$650, but I have heard zilch.

Kyle Bennett of HardOCP gives his estimates

RDNA4 should come in perf-wise between the 7900GRE and the 7900XT. That is way old data that I am going on. Might have edged it up to a 7900XTX, but not sure on that. I heard they pushed power envelopes to get another 5%.​

​

https://hardforum.com/threads/radeon-9000-series-on-sale-in-march.2039268/post-1046055550

He is very wrong. 😊

 

[gaav87]

I hate this waiting... idc if its 479$ or 649$ or 700$ just give me the damn taichi or nitro+ already...
If 5070ti has any real stock noone will buy 9070xt anyway if it launches march 6 ppl will already be creaming about dlss4 everywhere anyway. Like steve from HUB said even with 90% bad reviews for 5080 its sold out everywhere and people are buying for 1500-1800euro... Msi in poland had 50+ RE-STOCK few days ago did not even last few hours at 1600-1700euro...
Even if its 15-20% faster and 649$... People will buy 5070ti coz its the devil they know also dlss4 and cult following.

 

[igor_kavinski]

He is very wrong. 😊

While we are waiting, throw us some juicy tidbits

 

[basix]

If AMD wants to be "very aggressive", 499$ for the 9070 sounds reasonable to me. Provided, if 9070XT should reach ~4080 performance levels. That would put a 9070 to ~4070TiS regions - at least in raster.

599$ for 9070XT would then not be too attractive regarding P/L vs. the 9070. But it is the fastest RDNA4 card and will probably be positioned towards the 5070Ti.

9070, 220W, 4070Ti(S) Performance, 16GB, 499$. Sounds good in today's times.

 

[gdansk]

It's approximately 7900 XT. AMD gave us that slide already...

 

[basix]

A "very accurate" slide

Such slides have huge margins of errors. I would not rely on them. But even if the cards are a little bit slower, the value proposition would be still OK. Not as good, sure, but still OK.

 

[gdansk]

I suspect AMD knows more than other sources. But we'll see.

 

[gaav87]

So i guess 1000euro 9070xt ? xD

 

[jpiniero]

So i guess 1000euro 9070xt ? xD

It's possible that AMD plays the Fake MSRP game like nVidia does.

 

[GodisanAtheist]

TBF there is barely any Blackwell inventory and my understanding is countries outside of the US generally end up getting a smaller supply while paying somewhat higher base prices than the US as well.

Retailers have also gotten into the scalping business as well, anything that can fatten their margins is on the table.

 

[Hail The Brain Slug]

It's possible that AMD plays the Fake MSRP game like nVidia does.

They usually play it the other way around

 

[igor_kavinski]

It's possible that AMD plays the Fake MSRP game like nVidia does.

They won't achieve their target of increasing their marketshare with RDNA4 if they play that game. I don't think they will.

 

[gdansk]

They won't achieve their target of increasing their marketshare with RDNA4

Why wouldn't it?

 

[Josh128]

It's possible that AMD plays the Fake MSRP game like nVidia does.

No, AMD usually plays the Wish MSRP game.

 

[igor_kavinski]

Why wouldn't it?

The average gamer would rather pay higher price for RTX cards than RX cards. Since AMD keeps saying that RDNA4's very purpose for existence is to increase their mainstream marketshare, I don't think they will price it high.

 

[gdansk]

The average gamer would rather pay higher price for RTX cards than RX cards.

Fake MSRPs can be anything.

Even the real price can be much cheaper than Nvidia's if you fake enough.

 

[gaav87]

32GB 1H this year...