How long way would 3GB of VRAM go?

I’ve decided of buying a laptop with gtx1060, which has two main variants - one with 3gb of dedicated ram, and one with 6gb. The latter is noticeably costlier for me at this point and can’t afford to wait much longer, so I’d like to know of how much use would the additional 3gb be? I’ll be using blender for photorealistic rendering, sculpting and animation, initially at 480p, but later at HD and maybe even more. Scenes could potentially become quite hi-poly later on (200k? 300k? more? don’t know). If this is of relevance, when 2.8 comes out I’m thinking of mainly using eevee.