I’m tossing up between the HP spectre and the surface book. The HP spectre doesn’t seem to have a GPU: http://store.hp.com/us/en/mdp/Laptops/spectre-x360-211501--1#! in any of its models. The Surface Book does though. Though I have watched the HP specter play video games like League of Legends and WOW before. Is the HP specter able to play games?
well as the surface book has a dedicated GPU it should have better performance then the HP, intel graphics don’t usually handle UE4 very well although if you have one of the higher end intel chips then then UE4 runs ok so if your you only going to be developing a smallish game and your not aiming at the higher end of the graphics scale you should be alright, but I would never recommend intel graphics over a proper GPU.