AMD Polaris in 13 inch rMBP

Aditya_S

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Since supposedly the Polaris GPUs will be running cooler than the previous gen GPUs by AMD, is it possible Apple will include one of the mobile GPUs in the 13 inch rMBP?
 

PTLove

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Sep 12, 2014
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Very unlikely. I wont say impossible because.. well, who knows. But ill say very unlikely.

Apple uses ~35Watt discrete GPUs in the Macbook Pro 15". The fact that polaris is "cooler" is irrelevant, they would still use the same TDP thermal headroom in the design of the chasis. Given what they have to work with, and the fact that a polaris GPU under 35 watt is A) Unlikely to exist and B) wouldnt perform that well anyway, it simply doesnt make much sense.
 

Aditya_S

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Very unlikely. I wont say impossible because.. well, who knows. But ill say very unlikely.

Apple uses ~35Watt discrete GPUs in the Macbook Pro 15". The fact that polaris is "cooler" is irrelevant, they would still use the same TDP thermal headroom in the design of the chasis. Given what they have to work with, and the fact that a polaris GPU under 35 watt is A) Unlikely to exist and B) wouldnt perform that well anyway, it simply doesnt make much sense.
Thanks for the explanation, but, if that is the case, will the integrated graphics be Iris Pro 530, 550, or maybe even 580?
 

PTLove

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Sep 12, 2014
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Thanks for the explanation, but, if that is the case, will the integrated graphics be Iris Pro 530, 550, or maybe even 580?
The 13" will almost certainly come with the Iris 550 (all models) and the 15" will almost certainly come with the Iris 580 (all models), with some also coming with Polaris (higher end models).
 
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treekram

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Nov 9, 2015
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Thanks for the explanation, but, if that is the case, will the integrated graphics be Iris Pro 530, 550, or maybe even 580?
The available Skylake mobile chips with the Iris Pro 580 GPU are all 45W so unless Apple has a new thermal design (very unlikely), you won't see them in the new 13" MBP.
 
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gpat

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Don't count on it. An external graphics card would be nice though, Thunderbolt 3 allows it.
 

Samuelsan2001

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Yep no discrete GPU (you only have to look at the dGPU record to realise that even if they can put one in they almost certainly won't, as it's just another part to go wrong, and be drain on the battery) the 550 graphics will have a 64mb eDRAM cache though so should see some significant graphics increases on the 13 inch skylake.
 

Count Blah

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will not happen. a dGPU is one of the main upsells Apple holds over people's heads, to spend more on a 15"

Putting a dGPU in a 13" would break their financial models for the MBP. Finances > customer satisfaction.
 

Aditya_S

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- No, they didn't. 2010/320M and 2009/9400M were both integrated solutions.
I'm not sure what you mean, are you talking about the nvidia 320M and 9400M because I thought those were GPUs and not integrated.
 

JTToft

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I'm not sure what you mean, are you talking about the nvidia 320M and 9400M because I thought those were GPUs and not integrated.
- Yes, I am. 320M on 2010 13" and 9400M on 2009 13". Both are integrated GPUs, as can be read, respectively, in the second sentence of the graphics section of this Anandtech review and in the first sentence of this Notebookcheck review.
 
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Samuelsan2001

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I'm not sure what you mean, are you talking about the nvidia 320M and 9400M because I thought those were GPUs and not integrated.
They were NVIDIAS silicon integrated onto the main Intel chip and using system RAM, by all measures they were an integrated chip.
 

fat jez

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They were NVIDIAS silicon integrated onto the main Intel chip and using system RAM, by all measures they were an integrated chip.
No, they were a discrete GPU design integrated into an nVidia chipset. They were not part of the Intel CPU. It's why the Core 2 Duo hung around so long instead of transitioning to an i3 or i5.
 

Samuelsan2001

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No, they were a discrete GPU design integrated into an nVidia chipset. They were not part of the Intel CPU. It's why the Core 2 Duo hung around so long instead of transitioning to an i3 or i5.
No they were an integrated chip as a previous poster showed in their links to anandtech and notebook check reviews. They used system memory they are an integrated solution albeit using someone else's silicon. But believe what you like it makes little difference they were fairly rubbish and used very little power or thermal headroom and were a lot worse than current iGPU's.
 
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JTToft

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No, they were a discrete GPU design integrated into an nVidia chipset. They were not part of the Intel CPU. It's why the Core 2 Duo hung around so long instead of transitioning to an i3 or i5.
- Whether or not they were a part of the Intel CPU makes not a little bit of difference. The definitional difference between a discrete graphics solution and an integrated graphics solution is that the discrete has its own (discrete) memory, whereas the memory for an integrated solution has to be shared (integrated) with system RAM.
The GPUs in question shared their memory with system RAM; hence they are integrated. Since you seem a little stubborn, I'm including even more references (I would have thought the previous ones were sufficient, but whatever):

The term "dedicated" refers to the fact that dedicated graphics cards have RAM that is dedicated to the card's use
https://en.wikipedia.org/wiki/Graphics_processing_unit#Dedicated_graphics_cards

Integrated graphics solutions, shared graphics solutions, or integrated graphics processors (IGP) utilize a portion of a computer's system RAM rather than dedicated graphics memory. IGPs can be integrated onto the motherboard as part of the chipset, or within the same die as CPU (like AMD APU or Intel HD Graphics).
https://en.wikipedia.org/wiki/Graphics_processing_unit#Integrated_graphics_solutions
 
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