Hi, I need a laptop with fast processor for working with such 3D software as AutoCAD, Microstation, ArchiCAD, BIM, photoshop etc. I think about following configuration: i7 2630qm (or i7 2720qm) - what is the best for my purpose?; RAM 8gb DDR3 (or more?), HDD 750gb (or 1tb)/7200 rpm, NVidia 1gb or 2 gb (is it good graphics?), screen resolution 1900x1080, blu-ray burner, 9 cell battery. Also I would like to have laptop as light as possible, and with good cooling system - does it depend on brand? I was looking for customizable Dell xps15 or hp dv6t (by the way, quite expensive), and also was looking for Asus in canadacomputers, but can't make a decision. Was reading comments and found that people had problems with Dell, other were not happy with hp (produces too much heat), and some users were criticizing NVidia. Asus had not bad specs, but too heavy. It is difficult to find in the store required configuration. Will appreciate so much your advices. Romanna