TechpowerupPolaris 10@ 2048sp 5.5 TFLOP/sPolaris 11@896sp 2.5 TFLOP/s TDP 50W)

[Armsdealer]

Rumored performance numbers? Core counts for the GPUs are precisely correct.

Correct me if I'm wrong, but doesn't this website's confirmation of the rumored units being the M485x increase the probability that we will see an uncut silicon with more compute units in the desktop lineup?

If so, obviously we can take the performance of the M485X as a lower bound, in which case the likelihood of seeing a part that is more powerful, and perhaps sufficiently powerful enough to justify G5X, becomes a possibility.

 

[Glo.]

This is NOT Polaris GPU. Those are rebranded previous gen. GPUs.

 

[JDG1980]

Then they're lasering off almost 30% of the cores for the mobile variant?

While atypical, this would not be unprecedented. The FirePro W5000 (a first-gen Pitcairn release) had only 768 active cores, out of a total of 1280 on-die. This is the most severely cut GPU that I know of. Radeon 7870 XT had only 1536 out of 2048 cores active (25% cut) and only a 256-bit memory bus (33% cut).

The same is true on the green team. Even though yields were surely much better by then, Nvidia's GTX 980M had a full 25% of the chip disabled - not just shaders, but ROPs and memory bus as well. It was basically three-quarters of a GM204 in every way.

 

[JDG1980]

http://www.amd.com/en-gb/products/graphics/notebook/r9-m200

We have an answer what was that 2048 GCN core, and 896 core GPU for mobile .

So, for the mobile market, AMD is going to be rebranding full Tonga, and two Bonaire SKUs. We know these are rebrands, firstly because AMD published them when Polaris hasn't been released yet, and secondly because the stats shown on that page match the 28nm parts exactly.

We can draw some tentative conclusions about AMD's upcoming Polaris mobile lineup from this. If R9 M485X is Tonga, and R9 M470/X is Bonaire, then that leaves two obvious slots for the new chips. Presumably, Polaris 11 will be R9 M480/X, and Polaris 10 will be R9 M490/X. That also implies that, at least on the mobile side, Polaris 11 will likely be weaker than full Tonga - otherwise, why rebrand Tonga again at all? And Polaris 10 should be more powerful than Tonga - no surprise there.

It still seems odd that they're bringing back Tonga for another round, rather than using a severely cut-down Polaris 10. Tonga is bigger than any of the Polaris chips, and must have a considerably higher TDP, which is a big deal in mobile. Bonaire is more understandable, since there is probably some market for a low-end dGPU, and Bonaire is at least not as embarrassingly out of date as Cape Verde or Pitcairn.

 

[William Gaatjes]

So, for the mobile market, AMD is going to be rebranding full Tonga, and two Bonaire SKUs. We know these are rebrands, firstly because AMD published them when Polaris hasn't been released yet, and secondly because the stats shown on that page match the 28nm parts exactly.

We can draw some tentative conclusions about AMD's upcoming Polaris mobile lineup from this. If R9 M485X is Tonga, and R9 M470/X is Bonaire, then that leaves two obvious slots for the new chips. Presumably, Polaris 11 will be R9 M480/X, and Polaris 10 will be R9 M490/X. That also implies that, at least on the mobile side, Polaris 11 will likely be weaker than full Tonga - otherwise, why rebrand Tonga again at all? And Polaris 10 should be more powerful than Tonga - no surprise there.

It still seems odd that they're bringing back Tonga for another round, rather than using a severely cut-down Polaris 10. Tonga is bigger than any of the Polaris chips, and must have a considerably higher TDP, which is a big deal in mobile. Bonaire is more understandable, since there is probably some market for a low-end dGPU, and Bonaire is at least not as embarrassingly out of date as Cape Verde or Pitcairn.

I doubt that AMD will go for the old gcn 1.1 and 1.2 again on 28nm, especially for mobile. They talk all the time about performance/watt and performance/dollar. With 28nm that is not going to happen. And i read somewhere that just transferring an existing design to a new smaller process is really expensive. AMD will never be able to earn that back. They made it clear that polaris is where they have hopes for. So, that 480 lookes more like the a "tonga" 380x (but is not) but with the number crunching capabilities of a 390 (x) at a much lower power consumption and price. That would sell. Otherwise, nvidia will be having the last laugh again.

 

[airfathaaaaa]

https://www.youtube.com/watch?v=FvAW5UaRG_4

 

[Vaporizer]

Nice Video. I am really looking forward to Polaris Launch.

 

[Paul98]

Given the names of these we can see polaris 10 being the 49x series. Also the polaris 11 being between the 470x and 485x for performance. I am guessing the performance numbers in this rumor were made up.

 

[dark zero]

There are 2 untouched spots... R7 450 and 455. So maybe Polaris 11 will go there.

 

[USER8000]

If people dig a bit deeper,they will realise that AMD has not stated what cores are used in any of the parts.