Dell XPS series top video GPU is the GT 435M.
That is 'almost a gaming' video card. Roughly in the same class as a Radeon Mobility HD 5730.
Thats a bit less 3D gaming performance than a GT 240 or Radeon HD 5570 in desktop graphics card.
Gaming at 'max settings' is probably going to take something like a GT 460M which is in the same ballpark as a desktop Radeon HD 5750 or Nvidia GTS 450.
The top choice at Dell in your price range would be the XPS 15 with GT 435M.
I think your location is India and Lenono is very common brand their other than HP, so get Lenovo Y560 with (i7 720qm or 740qm and ATI Radeon HD5730), you will be very satisfied with its performance. Its available in US market for around 900$, so it will suit your budget. Or if you want to spend more than go with Dell XPS 15 or 14 configured with (i5 and GT425) = will cost you same as Lenovo, or (i7 and GT435) = will cost you much more than similar specs Lenovo.
I want to download some games for my dell xps 15.
I want dirt 2 ,far cry, crysis warhead,COD and more games having good graphics.
Can i play these games on max setting on my xps?
Please can somebody provide me link to download this games.
just buy a MSI GX660, it is available in india as i bought it a few days ago. you can play almost any game in max settings and is in your range,costs exactly Rs. 70000. its the best option out there ,way better than a dell xps with GT420M OR 435M, lenovo YPAD with radeon 5730 or with HP envy HD4770.