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

 

[marees]

N44(RX 7600 sucessor)

I expect N44 to sell alongside 7600. This is because 7600 is on a discounted 6nm node whereas N44 is on a premium 4nm node

 

[static shock]

Nevermind.

 

[marees]

Not N3E?

Again i say: I have no NDA to say this.

At N4X? Man more chances of the N48 full being 399. All i know is the focus on perf/w and perf/$.

Should be N4. Even the regular zen 5 (not the dense zen 5c) & strix point (not the strix halo) are on 4nm

RDNA 5 could be 3nm. Basically there could be a monolithic RDNA 5 that costs $500 & is the successor for 7900 xtx

 

[marees]

Navi 44 seems much bigger than polaris 14 / navi 24.

Seems more comparable to navi 23 🤔

https://twitter.com/x/status/1845710789950484950

Via Wccftech

@Olrak29_ revealed in an X post that the AMD Navi 44 "RDNA 4" GPU will have a package size of just 29 x 29 mm as mentioned in the NBD.LTD shipping manifestos.

 

[SolidQ]

Basically there could be a monolithic RDNA 5 that costs $500 & is the successor for 7900 xtx

We don't know about final perfomance N48, RDNA5 should be higher

 

[static shock]

Nevermind.

 

[static shock]

I expect N44 to sell alongside 7600. This is because 7600 is on a discounted 6nm node whereas N44 is on a premium 4nm node

But 4nm and Its evolutions are not that cheap too. But yields better.

 

[branch_suggestion]

https://twitter.com/x/status/1847113528596889925

So, are we continuing with 'A' stars of increasing mass, or sticking to red stars of increasing radii?
Both are possible with Canis Majoris.

 

[soresu]

Both are possible with Canis Majoris.

I think they would probably stick to one word names.

 

[branch_suggestion]

I think they would probably stick to one word names.

Both sorts of candidate stars are in the constellation, that is what I mean.
Could be what is after Navi with UDNA or whatever too.

 

[soresu]

Both sorts of candidate stars are in the constellation, that is what I mean.
Could be what is after Navi with UDNA or whatever too.

Almost certainly.

Navi started with RDNA1 which introduced both wave32 and the WGP/dual CU µArch features.

I'd imagine that whatever successor there is will do more than just add matrix units from CDNA to it, probably some fundamental new µArch feature(s).

Sirius is a great name, and I'm sure all the Potter heads will get behind it.

 

[Mahboi]

Nevermind.

Can you stop doing this trolling crap?
That's 4 messages in a row, I don't think anyone finds the joke funny.

 

[soresu]

But 4nm and Its evolutions are not that cheap too. But yields better.

TSMC 4nm nodes are 5nm with moar improvements like N8 and N6.

 

[static shock]

I have some confd. info so that's why I erase it.

 

[static shock]

TSMC 4nm nodes are 5nm with moar improvements like N8 and N6.

Oh yea sometimes is the half node shrink from the past we know.

 

[marees]

Kyle Bennett from hardocp insisted right after an early quarterly results (where for the first time console sales started to tank & Lisa gave further bad guidance for rest of 2024) that we won't see stock on shelves until 2025

This was confirmed officially by power color rep in computex & unofficially by other board partners in same event

(It was after below guidance that it set tongues wagging that there will not be a RDNA 4 release this year)


Earlier this year, AMD revealed that its overall gaming revenue in the first quarter of 2024 was down by 48% year-over-year. AMD only expected things to get worse in the second half of 2024.

This leaves Nvidia sitting pretty with 88% of the GPU market in its hands.

If AMD lets Nvidia run rampant, we're all in trouble | Digital Trends

A healthy rivalry between AMD and Nvidia might be the only thing that protects Nvidia enthusiasts from disastrous prices.

www.digitaltrends.com

 

[Hitman928]

(It was after below guidance that it set tongues wagging that there will not be a RDNA 4 release this year)


Earlier this year, AMD revealed that its overall gaming revenue in the first quarter of 2024 was down by 48% year-over-year. AMD only expected things to get worse in the second half of 2024.

This leaves Nvidia sitting pretty with 88% of the GPU market in its hands.

If AMD lets Nvidia run rampant, we're all in trouble | Digital Trends

A healthy rivalry between AMD and Nvidia might be the only thing that protects Nvidia enthusiasts from disastrous prices.

www.digitaltrends.com

Gaming being down was entirely on console sales, GPU sales were up.

 

[marees]

Gaming being down was entirely on console sales, GPU sales were up.

That is true. But the guidance of H2 being worse than H1 indicated no new launches in H2, I think

 

[SolidQ]

Gaming being down was entirely on console sales

GTA6 will give insane boost
SteamDeck 2 is RDNA5 going?

 

[marees]

GTA6 will give insane boost
SteamDeck 2 is RDNA5 going?

RDNA 5 is probably xbox (series S) handheld

RDNA 3.5 (along with zen 5 — ex: kraken point) is good enough for a steam deck refresh, imo.

 

[static shock]

RDNA 5 is probably xbox (series S) handheld

Probably the nextgen xbox.

 

[marees]

Probably the nextgen xbox.

Both

 

[Glo.]

https://twitter.com/x/status/1847113528596889925

So, are we continuing with 'A' stars of increasing mass, or sticking to red stars of increasing radii?
Both are possible with Canis Majoris.

Caroline Cluster.

That would be an epic name for... a person working in adult industry, not a GPU arch.

 

[SolidQ]

Spider Man 2 PS5 pro
NEW GRAPHICAL TOGGLES

RT Key Light Shadows : Off (Performance) / On (Fidelity default)
Use ray-tracing to calculate sun shadows at mid- to far-distance, replacing cascaded shadow maps. This improvement is most impactful on city views. Only available in the “Fidelity Pro” graphics mode.



RT Reflections & Interiors : Medium (Performance) / High (Fidelity default)
Set the quality level for ray-traced reflections and building window interiors. The “Medium” setting ray-traces at half render resolution, and the “High” setting ray-traces at full render resolution. The “High” setting will also improve smoothness of animation in reflections and interiors. Only available in the “Fidelity Pro” graphics mode.



RT Ambient Occlusion : Off (Performance) / Medium / High (Fidelity default)
Use ray-tracing to compute additional ambient occlusion lighting information. The “Medium” setting uses that information to augment screen-space ambient occlusion. The “High” setting also adds a screen-space GI bounce for additional ambient lighting information. The visual impact of this feature will vary greatly based on the scene.

Seems RDNA4 RT allow multi effects instead only Reflections.

F1 24 also add to race RT Reflections/DDGI/RTAO, base PS5 have RT only in replays

 

[gdansk]

Console games have graphical toggles now?