Discussion RDNA 5 / UDNA (CDNA Next) speculation

[adroc_thurston]

FinFlex my beloved.

Oh no it's a GPU.

 

[Kepler_L2]

Is SE scheduling that much harder than WGP scheduling in each SE to fatten them up that much?

More like they improved SE-level scaling with some trickery: https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2025144455&_cid=P21-MCPWUB-70374-1

 

[branch_suggestion]

Oh no it's a GPU.

Eh even with all dense fins clocks go up.

 

[gdansk]

Well, gamers ought to be happy. If AMD ships this the RTX 6080 they'll pay $1500-1600 for might actually have to be an x80 class card.

 

[RnR_au]

That is the halo config I've been thinking about for some time, would need around 800W or so to hit those clocks I think.

I just can't see AMD releasing a gpu with TDP of ~800W. So either the hydrogen bomb is just a sketch in the AMD lunch room wall, or they have some nice IP that can reduce the joules per gpu-ops.

 

[gdansk]

I just can't see AMD releasing a gpu with TDP of ~800W. So either the hydrogen bomb is just a sketch in the AMD lunch room wall, or they have some nice IP that can reduce the joules per gpu-ops.

I hope - for our sake - Nvidia and AMD come to an agreement to limit client graphics cards to 600W.

 

[adroc_thurston]

I just can't see AMD releasing a gpu with TDP of ~800W

Big boy accelerators are going to 3kW a pop pretty soon.
Client wattage CAGR is very slow relative to that.

I hope - for our sake - Nvidia and AMD come to an agreement to limit client graphics cards to 600W.

well, PCIe AIC FF is the limiter, really.

 

[branch_suggestion]

More like they improved SE-level scaling with some trickery: https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2025144455&_cid=P21-MCPWUB-70374-1

The Venn diagram between AMDs shader cores and what defines a CPU core is getting closer to a circle.

I just can't see AMD releasing a gpu with TDP of ~800W. So either the hydrogen bomb is just a sketch in the AMD lunch room wall, or they have some nice IP that can reduce the joules per gpu-ops.

Good 5090 air coolers can handle 800W right now without too much trouble.
Just need to sort out the power connector situation.

I hope - for our sake - Nvidia and AMD come to an agreement to limit client graphics cards to 600W.

I can see it, 600W hardlock with a 'secret' OC BIOS that voids warranty.
Or just do what the Japanese did with the 276hp limit, lie.

 

[branch_suggestion]

well, PCIe AIC FF is the limiter, really.

Pretty much, when do we get the babby version of OAM on desktop?

 

[gdansk]

Or just do what the Japanese did with the 276hp limit, lie.

We can call it the 0.8hp limit. 😂

 

[adroc_thurston]

Pretty much, when do we get the babby version of OAM on desktop?

When ATX dies by the way of a bloodied hammer (i.e. never).

Good 5090 air coolers can handle 800W right now without too much trouble.

see the issue here is dumping 800W into the case of some no-good gamer(tm) idiot.

More like they improved SE-level scaling with some trickery: https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2025144455&_cid=P21-MCPWUB-70374-1

eyyy that's for chiplet graphics.
neat.

 

[511]

Oh no it's a GPU.

Sticking to 2-2 Fin I see than

 

[adroc_thurston]

Sticking to 2-2 Fin I see than

AMD loves the zoomzoom, but GPUs are throughput machines so 3-2 is unwarranted.

This actually makes me wonder if poverty Medusa big cores would be 3-2 or 2-2.
No nanoflex there, d'oh.

 

[511]

AMD loves the zoomzoom, but GPUs are throughput machines so 3-2 is unwarranted.

This actually makes me wonder if poverty Medusa big cores would be 3-2 or 2-2.
No nanoflex there, d'oh.

Have finflex

 

[gdansk]

But gamers buy upscaling technology and that wasn't outlined on the chart. Why not leak the important information that gamers need?

 

[adroc_thurston]

But gamers buy upscaling technology and that wasn't outlined on the chart

FSR Redstone is public.

Why not leak the important information that gamers need?

Cuz it's public already lmao.

 

[gdansk]

Cuz it's public already lmao.

Oh it doesn't have DLSS? I think it'll be hard to sell.

 

[adroc_thurston]

Oh it doesn't have DLSS? I think it'll be hard to sell.

FSR4 reception was so good they plastered it front and center on 9060XT marketing.

 

[ToTTenTranz]

So there a halo RDNA5 after all? Weren't you guys saying it didn't exist?

Like.. for 7 months at least?

nope.

Well yeah. They've surrendered.
Just gave up.

 

[adroc_thurston]

So there a halo RDNA5 after all? Weren't you guys saying it didn't exist?

Like.. for 7 months at least?

Roadmaps are not set in stone.
Any gotcha against me doesn't work.

 

[ToTTenTranz]

Roadmaps are not set in stone.

The roadmaps changed last week?

If you mean a 6090 competitor there isn't

Any gotcha against me doesn't work.

I'm not interested in "gotchas". I'm more interested in knowing what led to this change (assuming there was a change from late '24 roadmaps).

 

[adroc_thurston]

The roadmaps changed last week?

They could've changed yesterday.

 

[marees]

The roadmaps changed last week?


View attachment 127684





I'm not interested in "gotchas". I'm more interested in knowing what led to this change (assuming there was a change from late '24 roadmaps).

The halo may not be a "gaming" GPU. I don't think AMD can sell a $2000 gaming GPU . Its primary purpose could be something else. Something like the Radeon VII

 

[adroc_thurston]

I don't think AMD can sell a $2000 gaming GPU

Yeah they can.
But that's baby stuff.
They need to like real real flex and ship a $2999 tiled part.
$3499 even.

Everything is forgiven in victory.
But first, you gotta win.

 

[gdansk]

Is that really to be a 6090 competitor? Presumably, Jensen is staying near reticle limit, near 600W, and still 512-bit GDDR7 but now 3nm and with 24gbit memory chips.
If the table is accurate a 380W 384-bit card doesn't seem like it could be targeting it.