So about 8 months ago I got the alienware m15x with the nvidia gt 240m, thinking it would be sufficient. It was sufficicient, but now I want more performance. So after looking at my options, I could either get the Nvidia GeForce GTX 260M or the ATI Mobility Radeon 5850. Both will run crysis about 2x as fast as my current one. If anyone could give me some advice that would be really great. And I have checked to see if I can upgrade and I can.