Ya, I've using the 550M for about five months, it's okay to perform the necessary functions. I've also got another laptop using the 540m, it's okay too.
But please don't compare it with the Alienware laptops or the quadro cards systems.
Another workstation just arrive my office, i think it's the entry level workstation, with intel Xeon and a quadro 2000. Yet to test it out, will update you guys next week. I also wanna know how complex the model the system can handle. It's my first quadro tho. Hopefully the coming system would be a dual Xeon with a quadro 4000. Pretty costly from dell tho.
Guys, please share your experience if any one running the SLI system on Archicad 15, thanks!