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]
Out of the box the reference 5700 XT has high burst speeds but under load it overheats and therefore drops frames to the extent that it is more or less unusable for demanding games like PUBG. In order to settle the card it was under volted by 120 mV and the maximum clock was lowered to 1,980 MHz (the stock BIOS and 19.9.1 driver defaulted the card to 2,030 MHz). The fan curve also had to be turned up to around 50% power at 75 degrees (which is a lot noisier than stock). After making these changes the card delivered far more consistent performance albeit with a reduced top speed and unacceptable (hair dryer) levels of noise. There were also incompatibilities with GTAV: enabling reflection MSAA resulted in very poor, almost matt, reflection fidelity (the same bug appeared on several Navi and Vega cards). The reference 5700 XT is great for beating cherry picked benchmarks, but it is not so great for playing games. Thousands of people, duped by sponsored marketing material, purchased the reference card expecting flagship performance, instead they got a shopping trolley with a V6 engine. It appears that the same marketing tactics were employed for the reference Vega 56 and 64 series of graphics cards which we will purchase for our gaming lab and generate effective Fps gaming metrics as soon as possible (results here). AMD appear to have very short term marketing strategists at the helm, they seem more concerned with this years bonuses than the longevity of the brand. [Jul '19GPUPro]
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.