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

 

[maddie]

They clearly missed the main clock target, but they could not have missed it by THAT much and we know the difference on release is low.

Pushing on a string?

 

[gaav87]

900W???

This msut be fake i dont believe this please tell me its fake for lolz

 

[eek2121]

I see on canada computers 5080 prices are ~19% above msrp this would mean 599$ for the XT would align more with the rumored 499$+100$ iv been hearing.

$479*

Not sure what you mean by this, that "MSRP" will be $499 but AIBs sell for an extra $100? Or that AMD shifted MSRP up $100 from their original plan to $599?

There are some MSRP models for 5080's as well, the vast majority are just 20% over MSRP.

https://www.canadacomputers.com/en/powered-by-nvidia/268152/zotac-gaming-geforce-rtx-5080-solid-16gb-gddr7-zt-b50800d-10p.html

Similar to Newegg (canada and US), where there are US$1000 MSRP 5080's, but they're 18th and 21st sorted by best sellers. All the ones selling ahead of them are 30%+ over MSRP.

Possible that none of these 9070XT's are MSRP, but the Reaper is Powercolor's base model.

Leaked prices are always higher.

Price for XT poor edition was suppose to be 499$ at least in late december.

$479* Also, that pricing is out the window thanks to current political climate. Here in the U.S., tariffs were announced. The 5070/5070ti will also very likely not be available at MSRP unless NVIDIA can avoid the tariffs.

It wasn't for those chips that were not scrapped - nobody is going to put dual mem controllers into low end that is going for value

They don’t need an extra memory controller to support the two standards and supporting both adds practically nothing.

They went backwards in performance and memory interface. And so also memory too.

They absolutely did not go back. Both IPC and clocks are up. They just chose not to release a high end SKU. Compare it to the 7800XT and you will understand.

Technically this is a successor to the 7800XT.

EDIT: 7800XT specs: https://www.techpowerup.com/gpu-specs/radeon-rx-7800-xt.c3839

Rumored 9070XT specs: https://www.techpowerup.com/gpu-specs/radeon-rx-9070-xt.c4229

Wow why is it so many Euros? I thought this was gonna be under $600...

$479 + 25% tariff is $598.75. Add in early pricing nonsense, etc. and prices just about check out.

EDIT:
Also note that, if rumors are any indication, the 9070 XT will compete (and beat) the 5070 Ti, and the 9070 will compete (and beat) the 9070.

 

[eek2121]

This msut be fake i dont believe this please tell me its fake for lolz

Why would it be fake? What do you think is wrong with it anyway?

 

[gaav87]

Why would it be fake? What do you think is wrong with it anyway?

I know its not fake asked around its red devil 9070xt....

 

[MrTeal]

AMD recommends 800W for the 7900XTX, so an extra 100W on top of that is hard to believe. The 7900XTX is already a 350W card.

 

[gaav87]

Why would it be fake? What do you think is wrong with it anyway?

Also why would europe have 25% tarrifs ?? AIB aint shipping them to US and back to EU also we dont have tarrifs

AMD recommends 800W for the 7900XTX, so an extra 100W on top of that is hard to believe. The 7900XTX is already a 350W card.

Its 100% real but only 1 model

 

[MrTeal]

Also why would europe have 25% tarrifs ?? AIB aint shipping them to US and back to EU also we dont have tarrifs

Its 100% real but only 1 model

Yeah it looked like an AMD display, but if it is the Red Devil that makes sense. They always turn those to ludicrous mode from the get go.

 

[eek2121]

I think I know the info behind that 32gb leak and AMD’s response. Call it an educated guess:

I have suspected for a while now that AMD is holding back a SKU. Certain leaks were in conflict and some were from credible folks. The answer is simple: the 32gb SKU will be an XTX model with faster clocks that is designed to compete with the inevitable 5070 super.

AMD recommends 800W for the 7900XTX, so an extra 100W on top of that is hard to believe. The 7900XTX is already a 350W card.

It is for an “OC” aftermarket card. It is in line with previous cards and makes sense.

Also why would europe have 25% tarrifs ?? AIB aint shipping them to US and back to EU also we dont have tarrifs

Its 100% real but only 1 model

This is what most folks don’t get. It doesn’t matter. Th whole world will be affected, which is why tariffs are a bad idea.

1) AMD is subject to tariffs in the U.S. If the cards or components cross the border at any point (say, for assembly), a tariff will apply. Even if the possibility exists. AMD has to factor that in.

2) For accounting purposes, AMD likely sets the MSRP in USD and creates regional pricing based off that. They also don’t want people trying to game the system. It is also simpler for accounting.

There are other reasons as well.

 

[gaav87]

I think I know the info behind that 32gb leak and AMD’s response. Call it an educated guess:

I have suspected for a while now that AMD is holding back a SKU. Certain leaks were in conflict and some were from credible folks. The answer is simple: the 32gb SKU will be an XTX model with faster clocks that is designed to compete with the inevitable 5070 super.


It is for an “OC” aftermarket card. It is in line with previous cards and makes sense.

This is what most folks don’t get. It doesn’t matter. Th whole world will be affected, which is why tariffs are a bad idea.

1) AMD is subject to tariffs in the U.S. If the cards or components cross the border at any point (say, for assembly), a tariff will apply. Even if the possibility exists. AMD has to factor that in.

2) For accounting purposes, AMD likely sets the MSRP in USD and creates regional pricing based off that. They also don’t want people trying to game the system. It is also simpler for accounting.

There are other reasons as well.

Guess u mean this on samsung instead of hynix ?

 

[blckgrffn]

$479 + 25% tariff is $598.75. Add in early pricing nonsense, etc. and prices just about check out.

Being pedantic - the tariffs will be applied to the cost of the good, not the MSRP. So, if they are declared to be worth (making up numbers for ease) $300 (because retailers buy them for less than MSRP, obviously) the 25% would be $75. So that wouldn't raise the cost to the end user by 25% of the original MSRP necessarily.

That said - most retailers will do everything they can to maintain their margins - which are usually done in terms of percentage vs absolute dollars. In that case, the MSRP is likely to slide up ~25%, but its going to be more or less depending on the market elasticity for the good. Some markets might see zero pass through, especially as they work through existing stocks. Cars, for example, probably won't go up 25% because that would kill the ecosystem.

Video cards though? We've got recent history saying MSRPs don't matter and enthusiasts see a lot of value in new GPUs so... I bet we see at least a 25% increase.

Yay.

(has a full container of aluminum goods on order and just did the math. ouch.)

 

[Bryo4321]

i wonder where an “xtx” 32gb variant would land compared to a 7900xtx

 

[GodisanAtheist]

Being pedantic - the tariffs will be applied to the cost of the good, not the MSRP. So, if they are declared to be worth (making up numbers for ease) $300 (because retailers buy them for less than MSRP, obviously) the 25% would be $75. So that wouldn't raise the cost to the end user by 25% of the original MSRP necessarily.

That said - most retailers will do everything they can to maintain their margins - which are usually done in terms of percentage vs absolute dollars. In that case, the MSRP is likely to slide up ~25%, but its going to be more or less depending on the market elasticity for the good. Some markets might see zero pass through, especially as they work through existing stocks. Cars, for example, probably won't go up 25% because that would kill the ecosystem.

Video cards though? We've got recent history saying MSRPs don't matter and enthusiasts see a lot of value in new GPUs so... I bet we see at least a 25% increase.

Yay.

(has a full container of aluminum goods on order and just did the math. ouch.)

-Never forget corpos factoring in human ignorance too...

If they can get away with saying 25% Tarrifs means we had to increase the price of goods 25% most people won't think too critically about that and just say 25%=25%, math checks out and go on their Merry way.

Essentially how greedflation worked out the last couple years (Oh inflation is up 10%? But the cost of OUR inputs didn't go up 10%... Whatever jack up the price 10% and tell people it was inflation!)

 

[SolidQ]

Interesting that XTX perf or 32GB XTX referring?

https://twitter.com/x/status/1890407693866631607

This msut be fake i dont believe this please tell me its fake for lolz

1000W

 

[reaperrr3]

I know its not fake asked around its red devil 9070xt....

PSU recommendations have to account for those "chinese firecracker" type cheap PSUs that can handle only about 2/3 of their paper spec without exploding at some point.

 

[blckgrffn]

-Never forget corpos factoring in human ignorance too...

If they can get away with saying 25% Tarrifs means we had to increase the price of goods 25% most people won't think too critically about that and just say 25%=25%, math checks out and go on their Merry way.

Essentially how greedflation worked out the last couple years (Oh inflation is up 10%? But the cost of OUR inputs didn't go up 10%... Whatever jack up the price 10% and tell people it was inflation!)

Yup.

Also, lost in this how payment processors (skimming all the pennies Office Space style, but we all agree to it) and Marketplaces like Amazon (charging fees based on final sale price) are fine with everyone else paying more in the supply chain because it makes numbers go up as the numbers must for public companies. It's fairly perverse/unhealthy.

It's fine.

Sorta on topic, feeling fine about the 7900XTX now.

 

[gaav87]

PSU recommendations have to account for those "chinese firecracker" type cheap PSUs that can handle only about 2/3 of their paper spec without exploding at some point.

Nah... They are pretty accurate for bronze psu's...

I have 6800xt phantom d oc + oced 9800x3d + 420 aio + pump + 7 140fans + 5ssd + 1shdd
bequiet! 750w straight power 11 platinum it was top tier when i bought it.
Anything above 10% power limit and im blackscreening.
When i had my 5800x3d on air -2ssd i could do more power tools 380-388W no problems... no black screens.
Now im tripping at 330W...
What does my gpu recommend ? 800W
So yeah i will be blackscreening like crazy on 9070xt red devil i need to swap...

 

[soresu]

Interesting that XTX perf or 32GB XTX referring?

https://twitter.com/x/status/1890407693866631607

1000W

Oh come on Everest, the guy goes to the trouble of making a Bluesky account and never uses it!

 

[PJVol]

Sure, my point was that it seems to me having desynced clocks was bringing in marginal benefits at best (at 10% ain't going to do loads) and it looks more desperate than planned - or perhaps more likely the other clock did not hit target level, which is why desyncing happened.

Technically they're not desynced.
SE and non-SE logic still have the same clock source from the clock mesh. But both having their own dividers with control signal input from the common controller, that set their frequency based on corresponding measured activity data of SE and non-SE, hence FIFO doesn't need to sync data traffic inbetween.
Perhaps the idea was to balance power by separate clocking within an architectural clock domain, in this case GFX.

 

[Z O X]

...
EDIT:
Also note that, if rumors are any indication, the 9070 XT will compete (and beat) the 5070 Ti, and the 9070 will compete (and beat) the 9070.

IMHO, we deserved a sub 500$ 144Hz 1440p card after years of disappointments from both sides ...

Nah... They are pretty accurate for bronze psu's...

I have 6800xt phantom d oc + oced 9800x3d + 420 aio + pump + 7 140fans + 5ssd + 1shdd
bequiet! 750w straight power 11 platinum it was top tier when i bought it.
Anything above 10% power limit and im blackscreening.
When i had my 5800x3d on air -2ssd i could do more power tools 380-388W no problems... no black screens.
Now im tripping at 330W...
What does my gpu recommend ? 800W
So yeah i will be blackscreening like crazy on 9070xt red devil i need to swap...

There is no way to push such wattage on that cooler. If you didn't tweak the voltages, no power headroom will give meaningful performance boost ...

 

[CastleBravo]

Microcenter posted prices for 12 different 5070 Ti models. Average is $937. Anyone want to take some new guesses on what retail price of 9070 XT will be? I'm pretty sure ~$600 is out the window.

 

[gdansk]

Microcenter posted prices for 12 different 5070 Ti models. Average is $937. Anyone want to take some new guesses on what retail price of 9070 XT will be? I'm pretty sure ~$600 is out the window.

Even average price is misleading because you know AIB are mainly producing the higher price ones to start.

 

[Hans Gruber]

Nah... They are pretty accurate for bronze psu's...

I have 6800xt phantom d oc + oced 9800x3d + 420 aio + pump + 7 140fans + 5ssd + 1shdd
bequiet! 750w straight power 11 platinum it was top tier when i bought it.
Anything above 10% power limit and im blackscreening.
When i had my 5800x3d on air -2ssd i could do more power tools 380-388W no problems... no black screens.
Now im tripping at 330W...
What does my gpu recommend ? 800W
So yeah i will be blackscreening like crazy on 9070xt red devil i need to swap...

Plug a watt meter into the wall and run your system through it. See how many watts you are pulling under load. If you do not have one, buy a cheap one on Amazon for $10-15. I know a few things about pushing power supplies. 750w power supply should be fine. If you are truly pulling 700+ watts. The first thing to go would be a couple of those 140mm fans. Then get bigger SSD's to cut down on the SSD's.

 

[gaav87]

In other news some guy bought 9070xt off of scalpers.
Also he got drivers from somewhere tmr benchmarks

 

[gaav87]

Plug a watt meter into the wall and run your system through it. See how many watts you are pulling under load. If you do not have one, buy a cheap one on Amazon for $10-15. I know a few things about pushing power supplies. 750w power supply should be fine. If you are truly pulling 700+ watts. The first thing to go would be a couple of those 140mm fans. Then get bigger SSD's to cut down on the SSD's.

Nah im buying nzxt c1200 tmr xD I like my fans and ssd's xD