Do we need VR ready laptop to create VR game in unreal 4.17
You need a powerful enough video card to render for VR. Whatever you have on the screen will be rendered twice with slight offset for each eye so you can see it properly in HMD. At my experience, people usually complain if a game is below 90-60 FPS. Also, you need to make sure that your laptop has all necessary/enough outputs to connect HMD and receivers.
So if a laptop says VR ready - it is a good sign that this is what you need 