But this: http://ubuntuforums.org/showthread.php?t=2008824 and 1000's of other users, wth many posts similar are gambling whether or not this or that newer model can switch it properly ?
Linux on a new Laptop, especially a powerful one with an expen$ive Nvidia-gpu, should NOT be a gamble for new users.
Until Nvidia provides a "proper" Optimus driver solution for Linux, this will always remain an Nvidia/Intel/WinBlowz party only. They are basically saying NO to a powerful Linux Laptop-Worstation choice for Linux users.
.... hence, Nvidia <- fu_k you!
A couple years ago, only a handful of these incorporated Optimess, but those days are long gone, because all the newer laptops,... will have it, whether we want it, or not.
I actually just picked up a cheap-used Dell Precision M90 purposely (with nvidia Quadro-FX2500M) -Lol. Everthing is just there though -Linux, (or any of the *BSD's), X with 3d glx nvidia driver... all working smoothly.