Best for Cad and 3d applications ??

Any of the quadro's would be better for the programs you are running, but cannot play games at all. Basically if you want to play games and don't mind a slower card for your programs then get the asus, but if you will only use those programs then get a laptop with a quadro.

http://www.notebookcheck.net/Mobile-Graphics-Cards-Benc...

Id say #2 comes out on top.

1 2 and 3 basically have the same CPU (dual core at around 3 ghz) and also their cards are from the same lineup so the 3700M is better than the 2700 and 700.

As for #4 compared to #2... 4 is a quad but only at 1.6ghz while 2 is a dual at 3.06ghz, im mostly going to assume you will benefit more from the higher clock rate rather than having an additional 2 more cores. And the 5870Mobility Its hard to say how exatically it will perform in 3D rendering. In the chart ive posted above you can look up the 3DMark scores of your GPUs the 5870Mobility gets roughly 17% more score in the 06 version, but the 3700M has something the 5870M dose not, and thats optimized drivers with 3Dmax, maya, and solidworks. That will mostlikely make up the difference and more.


Id also like to ask you why you wanted a laptop exatically. You could build your own i7 920 with 12GB RAM and a desktop version of a workstation card for $1800, and it would be more than three times faster than any of the workstation laptops you have chosen above.

and if #2 (w700) is with 4GB ram and #4 (asus) is with 8GB ram
is it will change the "picture" ?

It’s kind of hard to say, yes more ram will help out, cad is ram hungry, but the more you use the more graphic intensive the task. If you did/can use more than 4 gb with the 5870M it would perform that much more slowly because of the complexity/size of the task it has to render. I’d still pick #2 for smoother performance.

Did you look at the Eurocom Panther? It is similar to the W700 in design, but contains all desktop components. The battery life isn't good, but everything else about it is amazing.