What graphic card should i go with for laptop?

I guess the best right now is the gtx 880m and 780m, but they are very expensive i wanna know would the gtx 860m or 870 do the job for me or not.
i'm an architect i use alot of autocad. Sketchup, lumion, revit, 3d max.
i want to play games also on the laptop games like call of duty and battle field, crysis,

please advice me if its worth it for the 880m i will try to save money and buy it

my secont question is should i go for asus or msi or lenovo for the gaming laptop?

Guest

Laptops are not the way to go for gaming, a very high end laptop GPU like the 880m performs similar or worse than a GTX 670, and it will be pretty hot and won't have any room to overclock. But in general, the 880m or the 870m are pretty good for average gaming and they will get the job done if it comes to rendering too. Don't expect crysis 3 or BF4 to run at max settings, at 60fps.

Paul