A gaming laptop, for the far majority of people, is a silly idea. If you do not absolutely need to have the ability to play games while mobile and instead can have a dedicated desktop for gaming and then a separate laptop for mobility, not only will you save money, battery life, and have a much faster gaming system with the desktop, but whatever you purchase in the laptop for a graphics card won't be anywhere near a decent desktop card, so it won't take long for new games to go far beyond what your laptop can handle (and there are plenty of games now that are beyond what a laptop can handle).
Instead of spending $1500 on a "gaming" laptop, you would be much further ahead spending $750 on a desktop and $750 on a laptop, even if the only thing you use the desktop for is gaming.