carr251

Can this disable the iGPU, and only run on the 660m, or is the Graphic device setting only to disable the GTX 660M?

I am looking for a Lenovo Y580 for my laptop, and I am wondering if it fulfills a few requirements: (a) 4 hours of battery life in office ( Crysis 2 on max at 768p (30 fps or better ) © durable enough to be brought to and from school without the screen/computer breaking (d) able to replace ram and hdd without voiding warranty...(Are these Customer Replaceable Unit's?)(Not a requirements) My budget is $900, so what other laptops are comparable.