Overclockers Club published a review on the Lenovo Legion Y720 Laptoped
A quote from the article:
Starting with DX11 data, when running at 1080p plugged in or not had some impact, but not too much. The average FPS while charging, so there should not be any throttling for power, was 150.5 FPS (6.65 ms), and when on the battery it was 145.2 FPS (6.89 ms). The percentile data starts showing a difference, with the 0.1% having a frame rate of 110.95 FPS (9.01 ms) while charging and 71.35 FPS (14.01 ms) when on the battery. The amount of time spent below 60 FPS (frame time longer than 16.7 ms) is fractions of a percent for both states and the frame time difference between consecutive frames for both were with +/-2 ms, when looking at 1% to 99% of the data. The even more outlier difference data of 0.1% and 99.9% shows the on-battery test being less smooth, but the greater of these two was 7.43 ms, which still leaves plenty of time (for this game) to render the frame before the display cycles.Lenovo Legion Y720 Laptop Reviewed @ OCC