A sub-three-pound laptop? Been there, done that -- at least if you're MSI. Three years after bringing netbooks and other cute things to CES, the company is focusing on more robust machines -- so much so that while other OEMs are launching me-too Ultrabooks, it's trotting out a gaming box instead. The latest addition to the family is the GT783, a 17-inch beast of a portable rig we saw while making the rounds at CES. Chief among the specs is NVIDIA's top-shelf
