Hello friend I am planning to buy a new laptop for very high performance and for multipurpose reason. I want this laptop entertainment, for student research program and for gaming also. Normally I will use my laptop for 3D modeling, Physics research, simulation, Quantum Mechanics Data crunching, Algorithms, and Programming and also audio/video analyzing editing. Itís very hard to explain my all work detail. I don't want any fire wars, but I wanted to do my own investigate. I know my work is very heavy but if someone has any solution then please tell me here with high CPU and GPU performance. I will also use some kind of other software like: ABAQUS ADAMS Software, Adobe Acrobat ANSYS ASPEN HYSYS, C/C++ Carleton Site License Software CES4, Mathematica MATLAB MSC SOFTWARE, STK Tecplot Technical Support, LABVIEW LINUX Loftsman. So please tell me that which CPU (intel i7 920XM (extreme) vs. 720QM vs. i5 520M vs. i5 540M) will be better for me? And also tell me tht which will be better that nvidia Quadroís or ATI fire pro?