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

inquiss · Thursday at 12:15 PM

poke01 said:
Supply is AMDs worst trait. Anyway most of this is on NV.

But to AMD and NV the USA is all that matters. Not Europe and not even Asia.

Yep, it's why they're incremental. They've lived and breathed oversupply implications as a result of their GF relationship during the WSA days. They don't want to go back. Nor should they. If there were any prior green shoots that people would actually buy their GPUs, or had magic knowledge way ahead of time that Nvidia would stumble this hard, it might be different. They'd also have to convince the whole supply chain that this time, this time it might be different. What i don't get is the ire, or really the lack of comprehension here from some, that outside of some outlandish forecasting AMD would never be reasonably able to supply enough GPUs into the market in this particular window of buying opportunity

blckgrffn · Thursday at 12:16 PM

Well my desire/willingness to take the 9070 saved me a lot of money.

Got a Reaper 9070 for MSRP at MC and a $640 9070 Steel Series on the way from NewEgg and will be flipping the kiddos 6700XTs.

Cheapest remaining XTs in both cases were $200+ over MSRP and I couldn’t stomach it.

adroc_thurston · Thursday at 12:17 PM

poke01 said:
What else is in short supply another than sillicon?

Everything else? You can't materialize stuff into the supply chain at will.

coercitiv · Thursday at 12:19 PM

gaav87 said:
Panick buyed 9070xt taichi for 900euro (((((

Congratz, I guess...

GaiaHunter · Thursday at 12:22 PM

Paid £650 for an ASRock 9070 XT Steel Legend, so that was £80 over the base models.

Was debating going for a 9070 pulse at £530. £120 difference starts to make the 9070 attractive, but 4K monitor I guess.

SolidQ · Thursday at 12:25 PM

9070XT vs 7900XTX

gaav87 · Thursday at 12:43 PM

Im no longer mad i got Taichi and not mercury i regret nothing.
Same perf as asus TUF while -3dB xD
Nitro+ wins in all power draw / perf.

SolidQ · Thursday at 12:49 PM

AV1 seems not getting any improvements

Mopetar · Thursday at 12:51 PM

blckgrffn said:
Well my desire/willingness to take the 9070 saved me a lot of money.

Got a Reaper 9070 for MSRP at MC and a $640 9070 Steel Series on the way from NewEgg and will be flipping the kiddos 6700XTs.

Cheapest remaining XTs in both cases were $200+ over MSRP and I couldn’t stomach it.

The 9070 isn't a bad card, it just should have been priced at no higher than $530 MSRP. At $500 it would have been a great value in its own right.

Depending on the binning you might even get a great overclocker. The 9070 XT has much higher clock targets so the silicon is definitely capable in theory. As long as the card can supply the power that is.

Josh128 · Thursday at 1:11 PM

By now its an open secret...both AMD and NV LOVE these >$700 GPU prices. They absolutely would not provide "enough" stock to maintain MSRP even if they could. Thats my grumpycat, perhaps overly pessimistic, opinion.

Thunder 57 · Thursday at 1:12 PM

Also in the news today; AMD releases new driver with lots of additions.

https://videocardz.com/driver/amd-radeon-software-adrenalin-25-3-1

eek2121 · Thursday at 1:17 PM

Finally got around to watching the 9070 review. It seems AMD finally caught up with NVIDIA for perf/watt and they are ahead of the RTX 5000 series (which is less efficient than the 4000 series). This is based on efficiency testing by GN.

adroc_thurston said:
Everything else? You can't materialize stuff into the supply chain at will.

This. Also these cards take many weeks to create from start to finish. If AMD started pumping out cards full tilt and NVIDIA dropped tons of stock, they could be left with tons of inventory.

Initial demand is also always higher than ongoing demand.

I am sure stock availability will improve moving forward.

Josh128 · Thursday at 1:25 PM

eek2121 said:
Finally got around to watching the 9070 review. It seems AMD finally caught up with NVIDIA for perf/watt and they are ahead of the RTX 5000 series (which is less efficient than the 4000 series). This is based on efficiency testing by GN.

This. Also these cards take many weeks to create from start to finish. If AMD started pumping out cards full tilt and NVIDIA dropped tons of stock, they could be left with tons of inventory.

Re: efficiency, yeah, 9070 is pretty efficient perf/watt, but 9070XT is pushed too far out of its efficiency sweet spot, its no better than 7900XT or XTX. Neither are very competitive with even 5000 series in perf/area though. Still a pretty wide gap there.

It actually takes over a month to produce a finished wafer, start to finish, let alone the entire card itself.

adroc_thurston · Thursday at 1:26 PM

Josh128 said:
Neither are very competitive with even 5000 series in perf/area though.

GDDR7

Josh128 said:
Still a pretty wide gap there.

a negative one yes

marees · Thursday at 1:26 PM

DownTheSky said:
Amd needs to read the market better. They had 3 months, could produce millions of chips but didn't. Guess what they all would have sold out.

AMD should have launched the 2 cards 9 months ago for $800 & $700 respectively

MrTeal · Thursday at 1:26 PM

Hail The Brain Slug said:
Each manufacturer only having one single token card anywhere near MSRP is not much better than Nvidias fake msrp tactic.

Mopetar said:
The 9070 isn't a bad card, it just should have been priced at no higher than $530 MSRP. At $500 it would have been a great value in its own right.

Depending on the binning you might even get a great overclocker. The 9070 XT has much higher clock targets so the silicon is definitely capable in theory. As long as the card can supply the power that is.

It seems the 9070 is priced correctly and $550 will be what it's at going forward. The $600 for the XT is the fictitious price, and after launch we'll see that move up. In a week if the 9070 is still available at MSRP it might be the better value of cards that are in stock.

Sunaiac · Thursday at 1:34 PM

marees said:
AMD should have launched the 2 cards 9 months ago for $800 & $700 respectively

Why stop there?
I would have wanted the 9070xt's successor's successor 4 years ago

Bryo4321 · Thursday at 1:35 PM

gaav87 said:
Im no longer mad i got Taichi and not mercury i regret nothing.
Same perf as asus TUF while -3dB xD
Nitro+ wins in all power draw / perf.
View attachment 119104

From the German reviews I saw it looks like the red devil is about in par or even slightly better than the nitro.

MrTeal · Thursday at 1:36 PM

Sunaiac said:
Why stop there?
I would have wanted the 9070xt's successor's successor 4 years ago

Can I get it in 8x AGP?

SolidQ · Thursday at 1:40 PM

https://twitter.com/x/status/1897668346298220588

Hitman928 · Thursday at 1:50 PM

SolidQ said:
https://twitter.com/x/status/1897668346298220588

Sounds good to hear, hopefully they can make it actually happen. Sure sold a lot more than 3 units, that’s for sure

Saylick · Thursday at 1:52 PM

Hmmm, according to MC's website, there's a lot of MSRP 9070XTs still in stock at my local MC. By my count, there's at least 30.

Elfear · Thursday at 1:55 PM

I sure hope AMD is serious and will be pushing AIBs for MSRP pricing. I missed my shot this morning :/

blckgrffn · Thursday at 1:56 PM

Mopetar said:
The 9070 isn't a bad card, it just should have been priced at no higher than $530 MSRP. At $500 it would have been a great value in its own right.

Depending on the binning you might even get a great overclocker. The 9070 XT has much higher clock targets so the silicon is definitely capable in theory. As long as the card can supply the power that is.

The way I choose to see is that they are the equivalent of 4070 Supers, slightly more efficient and have 16GB of ram. People were so excited about the 5070 at $550 when Jensen unveiled it, and for my purposes the 9070 is in every way superior so... It is what it is.

The Steel Series has a 240W or something TBP setting so it seems to outperform other 9070s without being quiet so nuts on the power front. We'll see.

There were 20 5070's in stock and they were still in stock despite the heavy pressure on the AMD stock when I went through the line. One guy was taking a 5070 and there was some quiet jeering and jests about it being a 5070 or something less if it didn't have all of its rops. I heard plenty of jaded nvidia people (I've never bought an AMD card but been buying nvidia since 2007 was what one guy said) complaining in line, so clearly there are a people out there willing to buy whatever is available.

Just looked it up, still 8 5070's in stock where I was, so 12 sold. Price: $740.

Not making me feel bad about the 9070's at all. If wanted an MSRP one, I think I needed to just completely skip work this morning and drive straight there. Sigh.

Elfear · Thursday at 1:57 PM

Saylick said:
Hmmm, according to MC's website, there's a lot of MSRP 9070XTs still in stock at my local MC. By my count, there's at least 30.

Gah! I moved away from a MC recently (KCMO) and I miss it.

Discussion RDNA4 + CDNA3 Architectures Thread

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