Before all the friends crawl out of the crevasses of this forum and start yelling desktop, maybe you should ask him if the computer is for mobility.
Having lived with a gaming laptop, I'm trying to persuade people to stay away since they're absolutely stuffe.
The battery power will last you 3 hours with the laptop idling and the brightness set to low. Playing games will bring that down to under an hour (this is on multiple gaming laptops, btw, I've had to do PR for quite a few of these loving things).
Furthermore, the underside gets so hot, there's a risk of leg damage or even sterilisation (it may sound like a joke, but the number of cases is rising).
They're also heavy and I've damaged my shoulder carrying them around in a laptop bag.
If you want mobility, get a Surface or one of those tablets. As crappy as they are, they're a better option on the move than a laptop is.