It is totally worth it. Since I am in Chian right now I have only my laptop. It's price was 760€ 16 months ago (should be around 500 now) and runs the game on high settings with around 30 fps in outside terrain. I also have some mods installed that gave me some performance hit (lush grass, lush trees and flora overhaul mainly), but with Skyboost that is fine. I run about 71 mods right now. This includes many minor things like new textures but also bigger mods such as the named above and "sixy villages and towns", "realistic lighting", as well as "realistic water textures". I don't use the official Highres dlc.
Runs fine and hell, I won't ever go back to vanilla

.