I've got an Asus G75VW which was 1800$ Canadian, It has a 670m OC'd 755/1655 with after burner which yields 5-10 fps boost over the stock speeds, a i7 3610 (2.3 OC to 3.something ghz on turbo) with 16 gigs RAM and A SSD boot drive and HDD for storage.
I play COD Black ops 2on max at 40+ fps
Stalker COP with the complete mod on DX11 50+ Fps
Star craft 2 60+fps
all maxed at 1080p.
I realize this is a little above the budget but IMO it's worth it. Plus a two year warranty, back lit keyboard and the ASUS brand which in my experience is excellent; and I have used their warranty service had a one week turn around time. (warranty service was on a GPU that was broken)
MSI, ASUS, Alienware, Dell XPS are just a few brands off the top of my head which offer powerful laptops.