Discussion RDNA 5 / UDNA (CDNA Next) speculation

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del42sa

Member
May 28, 2013
177
299
136
https://wccftech.com/next-gen-hbm-a...gb-capacity-per-24-hi-stack-embedded-cooling/

Looking at the details for HBM4, the memory aims to offer a data rate of 8 Gbps with a 2048-bit IO, 2.0 TB/s of memory bandwidth per stack, 24 Gb capacity per die for up to 36-48 GB memory capacity, and a per-stack power package of 75W. HBM4 goes with the standard direct-to-chip (D2C) Liquid cooling and employs a custom HBM-based die (HBM-LPDDR).

Interestingly, AMD's Instinct MI400, which launches next year too, takes things up a notch versus Rubin and is aiming to offer 432 GB of HBM4 capacity with memory bandwidth of up to 19.6 TB/s.


 

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soresu

Diamond Member
Dec 19, 2014
3,866
3,270
136
https://wccftech.com/next-gen-hbm-a...gb-capacity-per-24-hi-stack-embedded-cooling/

Looking at the details for HBM4, the memory aims to offer a data rate of 8 Gbps with a 2048-bit IO, 2.0 TB/s of memory bandwidth per stack, 24 Gb capacity per die for up to 36-48 GB memory capacity, and a per-stack power package of 75W. HBM4 goes with the standard direct-to-chip (D2C) Liquid cooling and employs a custom HBM-based die (HBM-LPDDR).

Interestingly, AMD's Instinct MI400, which launches next year too, takes things up a notch versus Rubin and is aiming to offer 432 GB of HBM4 capacity with memory bandwidth of up to 19.6 TB/s.


View attachment 125570
Embedded cooling, aka DARPA ICEcool.
 
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branch_suggestion

Senior member
Aug 4, 2023
682
1,445
96
You know, AMD could change their client GPU roadmap to something like 2 mainstream parts every 2 years or so, and 1 halo tier part every 3-4 years.
Surely they can occasionally pull people off the hellscape that is GPGPU.
 
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ToTTenTranz

Senior member
Feb 4, 2021
418
799
136
Ryzen AI with RDNA5?
I don't get this.

On one side we have leakers claiming AMD's mobile APUs will start watering down their iGPUs because the market isn't interesting enough. On the other side we see Microsoft claiming their next gaming consoles are basically Windows handhelds running on present and future mobile APUs from AMD.


Which one is it?
 
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inquiss

Senior member
Oct 13, 2010
458
676
136
I don't get this.

On one side we have leakers claiming AMD's mobile APUs will start watering down their iGPUs because the market isn't interesting enough. On the other side we see Microsoft claiming their next gaming consoles are basically Windows handhelds running on present and future mobile APUs from AMD.


Which one is it?
I can explain this. Semicustom parts with high volume vs off the shelf parts with low volume.
 

eek2121

Diamond Member
Aug 2, 2005
3,373
4,992
136
I don't get this.

On one side we have leakers claiming AMD's mobile APUs will start watering down their iGPUs because the market isn't interesting enough. On the other side we see Microsoft claiming their next gaming consoles are basically Windows handhelds running on present and future mobile APUs from AMD.


Which one is it?
You misunderstand the announcement.
 

soresu

Diamond Member
Dec 19, 2014
3,866
3,270
136
AMD and Xbox have become long-term partners
I mean, console wise they already were.

The last Xbox with nVidia gfx was the OG Xbox, and the last Xbox with a non AMD/x86 CPU was Xbox 360.

Even without next gen or the rest of this gen that's already 12 years of consistent partnership on consoles, 2.5 generations worth when you count the XB1 mid cycle.

Honestly I'm surprised that they aren't more in sync on the Surface side of things.
 

marees

Golden Member
Apr 28, 2024
1,187
1,699
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Honestly I'm surprised that they aren't more in sync on the Surface side of things.
Surface is like a company of its own.

They partner only with intel/Qualcomm

The danger for AMD was that it was the surface team which was working on the first party handheld

Now that Verge's tom warren says that the surface handheld is essentially cancelled, AMD can breathe easy
 

soresu

Diamond Member
Dec 19, 2014
3,866
3,270
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I would be shocked if UDNA being implemented in XBox earlier than regular platform APUs.
Actually that's pretty par for the course.

The first PC APU with RDNA2 (Rembrandt IIRC) was announced in Jan 2022, over a year after PS5 and XSX/XSS launched in 2020.

Then Steam Deck with Van Gogh/Aerith was announced just a month later in Feb 2022.
 
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soresu

Diamond Member
Dec 19, 2014
3,866
3,270
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Xbox Series X was released 10th november.
6800XT(RDNA2 uarch) - 18th november
So i assume RDNA5/Xbox next gonna be same route
Oh ye RDNA5/UDNA/woteva dGPUs will likely launch pretty close to at least one console.

Be interesting to see where Valve lands in terms of what semi custom stuff they have next on their roadmap with AMD.
 

poke01

Diamond Member
Mar 8, 2022
3,528
4,856
106
For what reason?

Does Steam Deck not sell well enough to justify the VG production and AMD/TSMC are bitter about this?

Or is Valve delinquent on paying chip royalties?
Steam Deck in terms of volume is sad. Even the pathetic Wii u sold more
 

soresu

Diamond Member
Dec 19, 2014
3,866
3,270
136
Update on HIP RT/RDNA4 performance, I scoured the GitHub repo and found this:


We will address optimizations for RDNA 4 in future releases, trying to align with the HIP SDK release.

Evidently they are likely updating it to the nu HIP 7, with optimisations likely to be included along the way.
 
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