I haven't stressed it much so far. Just a couple videos and web browsing, but site rendering is much better on the Chromebook. I'm really just a web PC person so this is great (especially since Chrome is my browser of choice). Screen is much better on the Prime, but performance, so far, seems to be better on the Chromebook. With the docking station, I spent $500 on the Prime. This cost half. You do the math.
Also, it's lighter, the keyboard is better and it isn't as top heavy as the Prime.