Still, CityEngine runs only on NVIDIA and ATI hardware. Intel will fail.
I recommend NVIDIA.
Also note that many laptops usually have 2 graphics cards. 1 onboard ( on the main board ) and 1 'main' card to save power. So I've seen cases where CE did not want to start because the power options were set to 'save power' and thus, the OS fell back to the builtin graphics card, which was an Intel one.