Mainly because it's cheap (second hand)
I can use my fanatic wheel and rims on it to play pcars by hooking it up to my living room TV. As currently my 2 rims and base won't work with consoles until new rims are released.
So it will basically be a project cars machine and maybe a few cheap older games too. I can't afford to build a pc right now as I just dropped £2000 on fanatec gear. I have to do this in stages as I can't drop 4kin over a few months on games lol she will ****in leave me!
So I got my rig a few months ago, as I can use this with consoles etc for now (plus I had an invite and didn't want to waste it) now I can grab a super cheap laptop that I can sit next to my XBO/PS3 in the living room and play Project cars with my 2 existing rims (no need to buy the XBO rim right away), it's not available yet anyway, rumours suggest a March announcement with a sept release/arrival.
So for the price of 1 rim I can buy a laptop, slam on pcars and sone cheap steam sales and use that with my fanatic kit, hooked up to my tv until I save enough for a better pc (Xmas). It'll be my little sim laptop for games like cars, dirt, grid auto sport etc.
According to YouTube some 860ms get 50/60 fps in battlefield 4 high and metro last light high. It'll do tomb raider high and grid auto sport ultra at over 60fps too? So is pcars really that much more demanding than grid autos port ultra?
It seems that the 860m is advertised as being faster than a 750ti by everyone/everywhere... But that 1 benchmark States otherwise? I'm confused lol