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[NC] Review Nvidia GeForce GTX 860M Maxwell vs. Kepler

post #1 of 22
Thread Starter 
Quote:
The unequal duel. Nvidia offers two different versions of its latest high-end GPU GeForce GTX 860M. Besides a version based on the Maxwell architecture, there is also a GPU from the old Kepler generation. We compared the performance of the two DirectX 11 chips and found a winner.

Source

Same memory bandwidth, same ROPs, Kepler has 140% more TMUs and 80% more Cuda cores. Maxwell is clocked higher. Interesting comparison, I think being able to beat a kepler part with 80% more cuda cores shows the strengths of maxwell.
 
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post #2 of 22
Bodes well for Maxwell on the desktop, Please big Maxwell GTX 880 Nvidia.

Edit: This is quite interesting in more ways, think of this, Nvidia would not need to go to 20nm with Maxwell for sufficient performance increase e.g. A gtx 880 with either the same core count as the GTX 780 (Ti or non Ti) but with the Maxwell architecture would supply the neccesary performance increase.
Edited by Razor 116 - 4/18/14 at 12:10pm
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post #3 of 22
You cant directly compare their cuda cores. Less more powerfull cores vs more less powerful cores
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post #4 of 22
Quote:
Originally Posted by sugarhell View Post

You cant directly compare their cuda cores. Less more powerfull cores vs more less powerful cores

This would be the whole point of this data, yes. To demonstrate this. Exactly.

Significantly more powerful cores is a very, very good thing.
post #5 of 22
Thread Starter 
Quote:
Originally Posted by sugarhell View Post

You cant directly compare their cuda cores. Less more powerfull cores vs more less powerful cores

The entire point of the comparison is that the architecture/cores are different... Comparing chips like this highlights the differences.

The size of the cores btw should be similar. Each Maxwell SMM is supposed to give 90% of the performance of a Kepler SMX but at a much smaller size. We don't actually know if the cores themselves have any changes, just that the architectural changes to the SMX ( -> SMM) caused each maxwell core to perform 35% better than each kepler core.

And since that's not enough to account for the performance differences we see here it might be maxwell's L2 cache helping out with that memory bandwidth.
 
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post #6 of 22
The problem i see is that Memory bandwidth is holding back the Kepler core. Essentially the gab will be close in memory intensive games.
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post #7 of 22
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Originally Posted by ZealotKi11er View Post

The problem i see is that Memory bandwidth is holding back the Kepler core. Essentially the gab will be close in memory intensive games.

But that's the thing here, it's not Maxwell being close to kepler, and kepler running away in shader heavy games with the gap closing in memory bandwidth heavy scenarios.

The situation you have is that maxwell is actually winning. Almost across the board.
 
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post #8 of 22
I'm looking out if the 845m gets released to get an apples to apples comparison between it and the 750m/755m. So many spec differences between what out now to do more than guesstimate.
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post #9 of 22
Quote:
Originally Posted by Razor 116 View Post

Bodes well for Maxwell on the desktop, Please big Maxwell GTX 880 Nvidia.
That's what I'm talking about!
post #10 of 22
I would like a XPS 15 with a Maxwell 860M smile.gif
    
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