AMD: RDNA 3 Speculation, Rumours and Discussion

[Bondrewd]

I mean, is the cellphone experience really improving that dramatically to justify the immense pressure it places on our silicon capacity?

Yes but also no.
Phones live and die on yearly product cycle.

 

[PSman1700]

I bought an iphone xs 3 years back and I feel zero need to upgrade it. But I suppose I'm in the minority.

Apple/iphones never slow down, you can have your XS for another 7 years without a need to upgrade. Even the 6s is suffice for just about anything today.

 

[Krteq]

I'm kinda lost. Are we still discussing RDNA 3 or TSMC capacity reports or Switch?

 

[Bondrewd]

Apple/iphones never slow down

Well that's just bullshit.

Are we still discussing RDNA 3 or TSMC capacity reports or Switch?

All of it.
This place needs a generic %hardware for x year% thunderdome tbh.

Not much to talk about RDNA3 anyway.
AMD won't say a word until it hard launches so good luck waiting 1 more y.

 

[CarstenS]

 

[Deleted member 13524]

But I suppose I'm in the minority. People must have the latest and greatest (and have tons of disposable income).

You're not in the minority, you're in the majority. The company that sells the most smartphones is now Xiaomi who are mostly known for their great price/performance offerings. Samsung's Galaxy Sx used to be their top-selling line but the S21 family sold around one third of the S10 family and their budget-conscious A series are now the most popular.
The performance difference between the Snapdragon 7xx and 8xx is irrelevant for 99% of the time because most people don't play demanding 3D games in their smartphones anyway, and the latest release of the Snapdragon 870 as a "premium mid-range" blurred the lines between 500€ and 1000€ phones even more. Same thing with the newer Mediatek Dimensity vs. Snapdragon 8xx.
Nowadays, the only really discernible difference IMO between a 500€ phone and a 1000€ one is the latter getting those gigantic ~1-inch camera sensors, but it's probably not worth paying almost double for it unless you plan on taking lots of photos at night.

At the same time, people are taking longer to upgrade their smartphones. Nowadays it's just normal to hold on to the same smartphone for 3+ years, as long as there are security and OS updates.
On Android, halting the software updates after 1 or 2 years was a means to implement planned obsolescence, but the companies playing that game either became irrelevant (like HTC) or closed down their smartphone business (e.g. LG) due to terrible sales.

All this to say that smartphone SoC volume are probably going to become stale or decrease, leaving out more wafers to APUs, CPUs and GPUs.
There's a rise in SoC demand for automotive and IIoT, but I doubt it's going to be very relevant in the grand scheme of things.



All this to say I have no reason to believe N5 is going to be more problematic than N7 in terms of availability, unless crypto-crap e-waste ASICs keep getting pumped.

 

[PSman1700]

Well that's just bullshit.

I wasn't serious there Its just that many seem to be in the believe that Iphones are so much more capable than anything else....

 

[Bondrewd]

Its just that many seem to be in the believe that Iphones are so much more capable than anything else....

SoC-wise they are and they do provide some 5y of software updates.
But updates suck etc etc.

 

[PSman1700]

SoC-wise they are and they do provide some 5y of software updates.
But updates suck etc etc.

While true with the updates, i think its not a like-for-like comparison, googleplay updates the system components while with IOS you usually get updates to these once a year. Also difference in app support, usually apps require a higher ios version as opposed to android.
Apple's ahead in the SoC department, atleast in benchmarks. Still, the 888 seems to cope just aswell in heavy apps/games as the A14 does. It probably depends on what your doing aswell.

 

[Granath]

What kind of GDDR6 memory would it have ? Standard or X ? And what about speed ?

 

[Bondrewd]

Standard

This.

And what about speed ?

16-18Gbps and all.

 

[Granath]

https://videocardz.com/newz/amd-adds-rdna3-navi-31-and-navi-33-gpus-to-its-rocm-dev-tools

ModEdit: Fixed URL

 

[AlphaWolf]

https://videocardz.com/newz/amd-adds-rdna3-navi-31-and-navi-33-gpus-to-its-rocm-dev-toolsa

404

 

[BRiT]

404

Try link without the final A character. I corrected the original link.

 

[Deleted member 90741]

https://www.phoronix.com/scan.php?page=news_item&px=AMDGPU-DP-SST-UHBR10

AMD Posts Linux Patches In Preparing For DisplayPort 2.0 Radeon GPU Support
Since RDNA2 is DP 1.4 this is for RDNA3 likely (not sure if there will be a RDNA2 refresh)
4K @144Hz?
Seems RDNA3 will go with DCN3.1??
I read somewhere the VCN will have a new upgrade, VCN4

 

[CarstenS]

An AV1 encoder would be nice.

 

[Deleted member 13524]

Is AV1 more efficient than HEVC/H265?
Or is it really just a matter of licensing costs?

 

[Bondrewd]

Is AV1 more efficient than HEVC/H265?

Yes

Or is it really just a matter of licensing costs?

of fucking course; fuck MPEG.

 

[Rootax]

Is AV1 more efficient than HEVC/H265?
Or is it really just a matter of licensing costs?

Av1 can produce smaller files / use less bandwitdh than h265 at equal quality. But it needs more compute power. It reminds me 264 vs 265. If you value encoding time, it's not that efficient imo. But yeah if you prioritize size / bw, it's better.


Edit : for the time problème, of course things will evolve. Intel encoder with avx 512 support already offers a big perf boost. Avx 2 too.

 

[Leoneazzurro5]

https://videocardz.com/newz/next-ge...ies-could-be-using-refreshed-6nm-navi-2x-gpus

So, according to some leakers the very lower end of RX7xxx cards will consist of 6nm "refreshes" of the RDNA2 parts. Videocardz speculates about direct Navi22 and 23 ports, but I have my doubts due to the memory interfaces. So far we have as rumors and what @Bondrewd told us:

- Navi 31, 30WGP (120 "CU") per GCD 2 GCDs (15360 SP total), 4(?) 64-bit memory dies with 128 Mbytes of cache each (up to 512 Mbytes total) - targets 4K and higher - 5nm GCDs, 6nm memory dies (7800-7900 series)
- Navi 32, 20 WGP (80 "CU") per GCD, 2 GCDs (10240 SP total). 3(?) 64-bit memory dies with 128 Mbytes of cache each (up to 384 Mbytes total) - targets 1440p, 4K - 5nm GCDs, 6nm memory dies (7700 series)
- Navi 33, monolithic, 20 WGP (80 "CU" - 5120 SP total), 128 bit memory interface with up to 128 Mbytes of cache each - targets 1080p and 1440p - 6nm (7600 series)

Now the question is: do really these "lower end" 6nm cards do exist at all, and how many models there would be?. Maybe for mobile? We had rumors for a Navi 24, but it seems it did not materialize yet.
What configuration could have such lower-end card(s) - possibly a 7500 and a 7300?
Moreover, a 6nm shrink would not be so small, either.
I.e. if we shrink directly the Navi22, we'd get around 10% less area, that is, still more than 300 mm^2. it is possible that a lower end card would get even a smaller bus and less cache than N22, so we could have 36-40CU, 96 bit bus and 32-64 Mbytes of IC and this could be near the size of a N23/Navi10. Workable but a bit big for a "7500" even in this market. Dunno. It seems more speculation than actual leaks.