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ManuelGomes

macrumors 68000
Dec 4, 2014
1,617
354
Aveiro, Portugal
I'm not sure Polaris has integrated HBM2 mem controller. Targeting mainstream and having an HBM2 controller hardly seems reasonable, both concerning power and die space. But maybe AMD has that surprised up their sleeve.
 

Zarniwoop

macrumors 65816
Aug 12, 2009
1,038
760
West coast, Finland
It could be Apple only solution, or Firepro only.

You see, there's just 10% difference on theoretical speed between D300 and D500, but latter has 384-bit bus. So it can take better advantage of the raw power.

But GDDR5/X should be enough, at least theoretically it should double the data rate. Maybe that is enough for Polaris 10.
 
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ManuelGomes

macrumors 68000
Dec 4, 2014
1,617
354
Aveiro, Portugal
That's a good reason :)

But I don't see AMD doing a special die for Apple, specially for the nMP with such low volume. Unless it's not exclusive and at a later stage AMD can also use it for regular cards.
But I find it doubtful that it even exists.
And if it does, the performance improvement would warrant the 700 moniker? All models based on the same GPU? How much would be gained in terms of performance? Another 10%?
Unless it also boasts higher DP performance, but that would now be Vega, right? :)
 

Zarniwoop

macrumors 65816
Aug 12, 2009
1,038
760
West coast, Finland
You're right again. I forgot that. D500 has 4.1x more DP power than D300. SP difference was just 1.1x. And 1.5x in the memory bus.

So, going full Polaris is not comparable with Pitcairn and Tahiti differences. Polaris wont bring that big change to DP performance I suppose, but this is an area AMD has been quiet about.

Update: Ellesmere (Polaris 10) will have new L2 Cache (critical for GPGPU). It should help with memory bus limitations.
 
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ManuelGomes

macrumors 68000
Dec 4, 2014
1,617
354
Aveiro, Portugal
I'm betting on waiting on macOS.
Or indeed wait for another year (or more with all the delaying) for Skylake-W, which would be a great platform but another year of waiting :-(
 

koyoot

macrumors 603
Jun 5, 2012
5,939
1,853
Polaris does not have HBM2 memory controller, however their IMC is compatible with both GDDR5 and GDDR5X.
Why is everyone going about with the Gx00 naming scheme? Any leaks in that front? No more Dx10?
No, I suppose everyone took my prediction as point of view and it started living its own life :p. However it would be hilarious if the next gen. FirePro cards in Mac Pro would be named that way :D.
 

loby

macrumors 68000
Jul 1, 2010
1,883
1,515
Yes, it depends if MP 2016 needs macOS or it can be run on OS X 10.11.

Yes, this is the question...especially in video editing which the "can" is geared for. I have had to stay with OS X Yosemite for Final Cut Pro X due to reliability (believe it or not).

Since every new mac is not backward compatible in its OS X (or OSMac), "if" the new Mac Pro comes out this year, it has to come out now or soon so professionals can have a some-what stable OS and workflow to work during the transition to the New macOS build later this fall.

Me "thinks" this is why Apple is working hard lately to get El Cap finished so the new Mac Pro 2016 (and other new macs) can launch first with a stable OS, then gear for the next. Better to birth the new macs now at the tail end of the OS build for stability instead of a launch during the new OS and deal with the first generation bugs etc.

Spending this kind of money on a Mac Pro is not justifiable if we have to wait until 2017 for stability if the mac pro 2016 is birthed during the next MacOS cycle in the fall.

Would not be good business to do so...but logic is not used when you have achieved the money coffins that Apple has now.
 

Zarniwoop

macrumors 65816
Aug 12, 2009
1,038
760
West coast, Finland
That's more like it! Minimum requirements for Oculus Rift is 12034p and this Ellesmere Pro scored 14436p. With one GPU and regular GDDR5. Not bad for a $200 card. This means, that MP 2016 starts from ~9-10 TFLOPs configuration with basic dual D310/G300. D510/G500 would be ~11-12 TFLOPs.

D310/G300 is really going to be 2.5x faster than previous generation. Remember that this is what AMD promised? The sweet-spot being at nMP's' 100-125W category. If only Apple give the tools to use this dual GPU power properly.

Metal v2 has to come with openCL 2.1 or equivalent. We'll learn more about this next week too, I suppose.
 
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Zarniwoop

macrumors 65816
Aug 12, 2009
1,038
760
West coast, Finland
It is very likely that Ellesmere XT will reach Fury Nano in 3Dmark 11. We'll see.

GTX1080 sure is in it own class with 24000p. AMD and Nvidia are playing with different cards. AMD wants to take over the low and middle class market, Nvidia high end.
 

koyoot

macrumors 603
Jun 5, 2012
5,939
1,853
In 3dMark 11 benchmark Polaris 10(67DF:C7 from the RX 480) is on the same level as Fury GPU.
 

pat500000

Suspended
Jun 3, 2015
8,523
7,515
In other news: Apple is gonna wait for zen chip for Mac Pro which is likely in 2017.
 
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