1070 Max-Q better card than 1080 Max-Q for many reasons.
Here are some facts.
1060 Max-Q is 11% slower than 1060 Mobile but 53% faster than 1050ti Mobile.
1070 Max-Q is 18% slower than 1070 Mobile but 25% faster than 1060 Mobile.
1080 Max-Q is 12% slower than 1080 Mobile but 0% faster than 1070 Mobile.
1080 Max-Q is only GPU that is not faster than its lower tier mobile GPU.
1080 Max-Q is 18% faster than 1070 Max-Q
1070 Max-Q is 52% faster than 1060 Max-Q
1070 Max-Q has much higher performance jump from its lower tier Max-Q card.
Based on Asus Zephyrus GX501VI and GX501VS reviews,
1080 Max-Q temperature goes up to 80°C on load, whereas
1070 Max-Q temperature goes up to 70°C on load.
In which it gives 1070 Max-Q a headroom to overclock, reducing performance difference with 1070 mobile and 1080 Max-Q, while
1080 Max-Q will throttle if overclocked.
To conclude
Due to the nature of 1080's high TGP, Max-Q version of 1080 has worst efficiency, performing much like a 1070 card.
1070 Max-Q a smarter choice for the Max-Q Laptop for its performance efficiency and better acoustic. [Jan '18nday76]
The new GTX 980 Ti shares the same board as the more expensive Titan-X but with various restrictions including a reduced number of CUDA cores (3072 to 2816, -8.3%). Although the 980 Ti has the same 384-bit memory bandwidth as the Titan-X it only has 6GB of GDDR5 vs. 12GB in the Titan-X. So far we only have one user benchmark from a pre-release unit of the GTX 980 Ti so the following benchmarks are provisional. Comparing the Titan-X and 980 Ti shows that the Ti only lags by around 8%, which is in line with the CUDA core counts on the two cards. On the other hand comparing the GTX 980 and GTX 980 Ti shows that the Ti is around 16% faster. We don't have reliable prices for the GTX 980 Ti yet so a precise value rating isn't possible but as a card aimed at resolutions greater than 1080p it will struggle to match the GTX 970 for the vast majority of users. [May '15GPUPro]
We calculate effective 3D speed which estimates gaming performance for the top 12 games. Effective speed is adjusted by current prices to yield value for money. Our figures are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top GPUs. [GPUPro]
Welcome to our PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best value for money upgrades.