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

 

[adroc_thurston]

A few percent performance drop

that's not a few % lmao

 

[Josh128]

Hey at least as far as we know, the AMD cards don't have variable ROPS, right?



Here is another example of 30 dollars one way or the other somehow makes the card extra special or extra craptastic. But does it have the variable ROPS feature?

Considering a 6700XT can be readily gotten for <$250 and 7700XT can be gotten for <$350 even prior to the RDNA 4 launch, it all boils down to the performance. My $299 is based off my guess that 9060XT, based on 50% of 9070XT, is likely to be around 6700XT +10% or 4060Ti perf level. Now if AMD had the foresight to build it based on their 5060Ti projections and it ends up being ~7700XT level, then yeah, I could see it going for $349 or so, especially the 16GB version.

 

[Hans Gruber]

I don't care if AMD releases another 8GB model. They shall do it if they see benefit in it.
But besides of that and the 9060XT 16GByte, there should be a 96bit / 12GByte model. That would be the Go-To card if you cannot afford the 9060XT 16GB. A few percent performance drop due to 96bit instead of 128bit is acceptable and far less noticable compared to an overfilled VRAM buffer.

- 9060XT, 16GB, 32CU, 349$
- 9060, 12GB, 28 CU, 289$

Your numbers leave a wide open lane for Intel GPU's.

 

[adroc_thurston]

Your numbers leave a wide open lane for Intel GPU's.

that's a funny joke.

 

[Hans Gruber]

that's a funny joke.

What AMD card do you have? Or is that an even funnier joke?

 

[adroc_thurston]

What AMD card do you have?

6900XT.

Or is that an even funnier joke?

Yeah the funniest joke ever is Intel GFX IP.

 

[GTracing]

https://www.reddit.com/r/hardware/comments/1j7fckq/geforce_rtx_5070_vs_radeon_rx_9070_xt_meta_review

Voodoo2-SLi posted his meta-review comparing RDNA4 against Blackwell. Two things stand out to me:

Numbers vary quite a bit. In Hardware Unboxed's 2160p ray tracing tests, the 9070 has 71% the performance of the 5070. The next lowest is 88%.

The 9070 is honestly not that bad. The XT is ~15% faster and with 9% higher MSRP. Plus the 9070 is the most efficient GPU available.

 

[gaav87]

It hasn't crashed in the games I played yet at -100mv (Guild Wars 2, Borderlands 3, MW5 and RDR2).

In RDR2 it hit 3400 but didn't stay there long, mostly it hovers around 3300 MHz.

I'll play with memory tomorrow. Don't have more time today, wife is starting to give me the stink eye...

Empty clocks 100%.
Im scoring almost 105fps in GT1 timespy extreme
I can do 3450mhz on my taichi in some games but perf is worse than setting below.
This took, a long time to test try this setting for urselve in some game u will see u can set PL at 10% instead of my suggested 6% it gives some perf in light games

 

[Hans Gruber]

https://www.reddit.com/r/hardware/comments/1j7fckq/geforce_rtx_5070_vs_radeon_rx_9070_xt_meta_review

Voodoo2-SLi posted his meta-review comparing RDNA4 against Blackwell. Two things stand out to me:

Numbers vary quite a bit. In Hardware Unboxed's 2160p ray tracing tests, the 9070 has 71% the performance of the 5070. The next lowest is 88%.

The 9070 is honestly not that bad. The XT is ~15% faster and with 9% higher MSRP. Plus the 9070 is the most efficient GPU available.

The efficiency numbers of the 9070 are what looks best to me. I know you can under volt the 9070xt. Nvidia's only move is to cut the price of their 5070 cards.

 

[gaav87]

Why did they cancel big rdna4...
280-320W ... Only 19% off rtx 4090 with max ray tracing same setting... also beating 4080s wonder what 5080 would score here.
I have copium gddr7 +15% xD

 

[DaaQ]

Considering a 6700XT can be readily gotten for <$250 and 7700XT can be gotten for <$350 even prior to the RDNA 4 launch, it all boils down to the performance. My $299 is based off my guess that 9060XT, based on 50% of 9070XT, is likely to be around 6700XT +10% or 4060Ti perf level. Now if AMD had the foresight to build it based on their 5060Ti projections and it ends up being ~7700XT level, then yeah, I could see it going for $349 or so, especially the 16GB version.

Are you talking used market? Are you EU or US? I couldn't find any of those mentioned at prices you mentioned currently.
Seems as if one has any of the cards you mentioned, they will make quite the profit.
I did look at google as well, but here is Newegg. Added 7600 as well.

https://www.newegg.com/p/pl?N=100007709%20601421999%20601431988%20601362404

If it all boils down to the performance, then the argument is as always, "You could have bought that performance level X amount of years ago"

Like I said, at least as far as we know, AMD is NOT using variable ROP technologies.

Now my original comment was not a slight towards you, it was directed at the constant, incessant argument of if AMD priced their products cheaper it would be a hit. (The usual amount is 30 dollars) We all know this to not be true. Due to the share numbers no matter how you parse it.

Now if you can show me, a 6700XT or 7700XT at those price levels BNIB with warranty, my nephew is in the market.

 

[SolidQ]

Why did they cancel big rdna4...

Mlid hinted they prepare Ultimate N48, but who knows what is that, if UN48 is real

 

[poke01]

Mlid hinted they prepare Ultimate N48, but who knows what is that, if UN48 is real

thats just more vram, we need more CUs and vram

 

[gaav87]

thats just more vram, we need more CUs and vram

Dont tell me 3gb n48 ? xD I just fin bought two 9070xt's xD

 

[Josh128]

Are you talking used market? Are you EU or US? I couldn't find any of those mentioned at prices you mentioned currently.
Seems as if one has any of the cards you mentioned, they will make quite the profit.
I did look at google as well, but here is Newegg. Added 7600 as well.

https://www.newegg.com/p/pl?N=100007709%20601421999%20601431988%20601362404

If it all boils down to the performance, then the argument is as always, "You could have bought that performance level X amount of years ago"

Like I said, at least as far as we know, AMD is NOT using variable ROP technologies.

Now my original comment was not a slight towards you, it was directed at the constant, incessant argument of if AMD priced their products cheaper it would be a hit. (The usual amount is 30 dollars) We all know this to not be true. Due to the share numbers no matter how you parse it.

Now if you can show me, a 6700XT or 7700XT at those price levels BNIB with warranty, my nephew is in the market.

Looking at used prices on Ebay and Reddit.

 

[marees]

Dont tell me 3gb n48 ? xD I just fin bought two 9070xt's xD

I am guessing clamshell 32gb

 

[itsmydamnation]

Empty clocks 100%.
Im scoring almost 105fps in GT1 timespy extreme
I can do 3450mhz on my taichi in some games but perf is worse than setting below.
This took, a long time to test try this setting for urselve in some game u will see u can set PL at 10% instead of my suggested 6% it gives some perf in light games

View attachment 119375

What does stock look like?

 

[coercitiv]

What happens when reviewers take a look at how it feels to buy cards (including "the rest of the world" for U.S. residents)

 

[gaav87]

What does stock look like?

Stock base msrp model is ~71fps

 

[Gideon]

What happens when reviewers take a look at how it feels to buy cards (including "the rest of the world" for U.S. residents)

Yeah, In Europe the availability has been rather miserable everywhere AFAIK. I had two friends ready to pull a trigger on this card, if it were available for at most €750-800 (after taxes), but it wasn't even close. There were only a couple non-XTs available for that price. XT was at best high 800-ies.

The reality now is €770 for the cheapest non-xt and €890 for the cheapest XT. Considering you can buy a MSI VENTUS 3X RTX 5070 Ti for €999 there just is no way to recommend them. IMO they both would have to be at leats 100€ less (the non-xt perhaps a little bit less than €100 as it's costing about the same as 5070 and has more memory)

 

[poke01]

love this comment lol

 

[poke01]

I'll chime in too "MSRP" went from $1139AUD for the 9070XT to $1399AUD.

Radeon RX 9070 XT Australian Prices

Specs and price history for the AMD Radeon RX 9070 XT graphics card from Australian sellers. Find out what the good deals are. Prices from $1399.00.

www.pgrid.com.au

 

[Timorous]

Considering a 6700XT can be readily gotten for <$250 and 7700XT can be gotten for <$350 even prior to the RDNA 4 launch, it all boils down to the performance. My $299 is based off my guess that 9060XT, based on 50% of 9070XT, is likely to be around 6700XT +10% or 4060Ti perf level. Now if AMD had the foresight to build it based on their 5060Ti projections and it ends up being ~7700XT level, then yeah, I could see it going for $349 or so, especially the 16GB version.

My projection of 9060XT 16GB is based on the fact the 9070XT with a similar config to the 7800XT is around 36% faster using the TPU database performance ranking and it is competing with parts that have 50% more memBW and 50% more L3 cache. On that note 36% more than the 7600XT is around 7700XT performance although the 7700XT would only have 30% more memory bandwidth than a 20gbps equipped 9060XT so that delta is actually smaller.

So I do think based on how N48 performs that N44 with the right memory should be 7700XT tier.

As for my 12GB 96bit cut down 9060 then with 20gbps ram it would have 240GB/s of bandwidth and I would expect, with the right clock speeds, it can perform around 6700XT / 3060Ti. Both the 8GB model and 12GB model would have different compromises, one compromises on peak performance when the VRAM requirements are sub 8GB and the other compromises on performance when the VRAM requirements are over 8GB. Given this is 2025 and given more and more games are using more than 8GB of VRAM I think the 8GB variant will have the bigger tradeoffs over a typical 6 year service life and arguably, depending one what games a person is playing it would be a bigger tradeoff today.

From the business perspective I think there is a more tolerable ceiling price for a 12GB entry level card than an 8GB card. a $280 8GB card will just stay on shelves or be relegated to OEM only boxes for unsuspecting buyers. OTOH a 12GB card at that price point and 6700XT performance would be received very well as we already saw with B580.

 

[poke01]

wow, less power consumption but still better than 7900xtx

https://videocardz.com/newz/radeon-rx-9070-xt-outperforms-geforce-rtx-5080-in-cyberpunk-2077-and-3dmark-after-undervolting-3-3-ghz-clock-reached

 

[DAPUNISHER]

Interesting info in the GN rant about S.I. reactions. One says it is better than expected, for the other it's a flop. The flop sales I suspect are due to derp pricing on their systems. The salient point is that those are cards not in retail circulation, and that's only two companies. There are many more.

AMD gamed the tech press well for a change. Those launch reviews are out there now. Shoppers aren't going to dig into these rage bait follow ups. Again, pulling pages from the Nvidia playbook. Steve says they can't do that by using Nvidia as a shield to do the same 💩 but AMD said "Oh yeah? Hold my beer!"

It is also erroneous to pull data from normal market conditions to compare to times of madness like the present. The 6700XT MSRP was $479, the 6900XT $999 unadjusted for inflation, which has been rampant since the start of the decade. That's your point of comparison - madness vs madness. Complaining about the markup on premium models is also odd. Why explain how EVGA was only making $4 a card if you are going to get spicy about AIBs upcharging to make a buck? They are under no obligation to adhere to the old pricing and market paradigms. Demand is much higher than supply, welcome to year 2 math class. I remember they used lemonade stands as the model for it.

The evangelizing tech bro stuff Steve opined, is largely horse💩. It's laughable really. AMD has to win our hearts and minds so we will jump up on a soapbox and be free sales reps for them? GTFO. Nvidia has been wearing the blackhat so long, AMD look like the white hats by comparison alone. No need to get all preachy about how AMD needs to give us all 🫦 ✋ behind the bookstore or else. FFS 🤣 Suggesting that is why Ryzen took off is also weak. We were all typing our fingers off for years about how AMD was superior back in the 2000s, it did nothing to change Intel market dominance. It didn't matter this time around either. Intel has fallen apart, and yet they still dominate the market. It'll take years of continued collapse for AMD to even get to 50%. It amounts to reddit and forum dwellers engaging in some self aggrandizing nonsense inflating our importance in the success or failure of these corpos.

Complaints real and exaggerated is all this hobby does anymore. I am reduced to complaining about the complaining. This timeline sucks.