> The GP104 Pascal GPU Features 2x the performance per watt of Maxwell.
And
> The GTX 1080 is 3x more power efficient than the Maxwell Architecture.
I think that someone get carried away by imagination.
I found that 980 has 4.6 TFLOPs (Single precision)
And assuming that 1080 performance (9 TFLOPs) is also for single precision and new card has the same TDP, this is 1.95x increase, so it is ~2x
EDIT: I found that 1080 will have 180W TDP, where 980 has 165W, so correction it will be 1.79x increase
And
> The GTX 1080 is 3x more power efficient than the Maxwell Architecture.
I think that someone get carried away by imagination.
I found that 980 has 4.6 TFLOPs (Single precision) And assuming that 1080 performance (9 TFLOPs) is also for single precision and new card has the same TDP, this is 1.95x increase, so it is ~2x
EDIT: I found that 1080 will have 180W TDP, where 980 has 165W, so correction it will be 1.79x increase