On notebooks where efficiency matters much more due to the heat dissipation limitations going for the 20 series is obviously smarter than going for the older 10 series.
TechSpot, a website known for its reviews on hardware such as CPUs and GPUs, investigated Nvidia's new RTX technology known as DLSS, an advanced form of super sampling that is similar to anti aliasing. The website found that DLSS can improve the image quality of a 1440p image to look like an 1800p image.