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

 

[Joe NYC]

Taiwan commercial times just reported 5070 and 5060 might be delayed due to performance issues after taiwan earthquake and need extra time for debuging.
Guess we see 9070 in april

It will just slip to February 29.

 

[Dezii90]

Yeah would be interesting, what is MB

https://videocardz.com/newz/amd-radeon-rx-9070-xt-confirmed-as-304w-card-rx-9070-non-xt-is-220w

AMD Radeon RX 9070 XT & RX 9070 GPU Performance Leaks Out: Comparable To RX 7900 GRE & RX 7800 XT​

AMD Radeon RX 9070 XT & RX 9070 GPU Performance Leaks Out: Comparable To RX 7900 GRE & RX 7800 XT

The first performance benchmarks of AMD's RDNA 4-based Radeon RX 9070 XT & 9070 GPUs have leaked out at Geekbench.

wccftech.com

another same repeat story about 7900GRE

They're reducing expectations. This doesn't even make sense, Frank said final performance is higher than the leaks we have.

 

[Josh128]

Eh, nope.
They have a massive cost advantage over anything GB203.

Evidence of that??

 

[Jan Olšan]

They're reducing expectations. This doesn't even make sense, Frank said final performance is higher than the leaks we have.

What the title states is just leaked opencl/vulkan synthetic scores in geekbench. It probably understates the real difference in gaming performance, RX 9070 XT is faster than RX 7900 GRE.

Geekbench is hugely unreliable for GPU comparisons, huge error margin. Not as useless as GFXbench or how it was called but getting there.

 

[gaav87]

Guys i found this
9070 xt = 4080s in openGL furmark
48% faster than 7800xt with thous bad chinese drivers xD

 

[Tuna-Fish]

Furmark is not a very representative benchmark for games, possibly the iC being closer and lower latency gives it more of a boost than it would see in a workload with more scene complexity?

 

[gaav87]

Highest 9070xt furmark score i found is 8000

 

[SolidQ]

Highest 9070xt furmark score i found is 8000

Very different results

 

[gaav87]

Very different results

I found 5 total benches so far all are reporting 2030-2150mhz clock i know its 99% wrong. But if it aint

 

[gaav87]

Lol this furmark result use the same beta chinese drivers that are flooting around since january that were said too have lower PERF.
What the heck is AMD ploting ?

 

[Josh128]

I found 5 total benches so far all are reporting 2030-2150mhz clock i know its 99% wrong. But if it aint

Whats the purpose of all these 7900XT benchmarks?

 

[SolidQ]

What the heck is AMD ploting ?

hidden 4090 power!

 

[MrTeal]

What the heck is AMD ploting ?

hidden 4090 power!

They realized that Nvidia was shipping a tiny quantity of burning cards that are sometimes missing specs and are selling for hundreds over MSRP at retail, and if they didn't do something quick they were going to have an absolute winner on their hands.

Don't worry, prices and market segments have been adjusted and they've steered back into their lane of Nvidia raster - $50 where they can comfortably lord over their 8% market share.

 

[Hail The Brain Slug]

I found 5 total benches so far all are reporting 2030-2150mhz clock i know its 99% wrong. But if it aint

Come on, you have to know by now what furmark does. These clockspeeds are meaningless.

 

[gaav87]

Come on, you have to know by now what furmark does. These clockspeeds are meaningless.

Stop bringing me back to reality Still they are using thous chinese hacked beta drivers (breaths in copiumD)

 

[gaav87]

Highest 9070xt score i found till date.

 

[SolidQ]

Seems Ancient already got cards

 

[gaav87]

Seems Ancient already got cards

Benchmarks are already flying behind the sceenes not from fabio thou.

 

[SolidQ]

Benchmarks are already flying behind the sceenes not from fabio thou.

at least he will review at day1, because he's one who testing for AMD testing drivers publicly for bugs etc

 

[GodisanAtheist]

Seems Ancient already got cards

Hype train is in a deep state of confusion.

 

[Kepler_L2]

40% faster than GRE is the claim from AMD apparently

 

[adroc_thurston]

40% faster than GRE is the claim from AMD apparently

yeah, it's 7900XTX plus or minus 5%.
Do you know the MBA wattage?

 

[Hitman928]

40% faster than GRE is the claim from AMD apparently

If true, it should basically match the 7900XTX, at least up to 1440p. Maybe it falls a little behind at 4K as the bandwidth requirements go up. We'll see.

 

[adroc_thurston]

Maybe it falls a little behind at 4K as the bandwidth requirements go up.

All I can say is "depends on the title".

 

[Hitman928]

All I can say is "depends on the title".

Of course