Man, Core i7 laptops just keep coming and coming (kinda like Arnold). The latest in what's sure to be a torrent of companies upgrading their premier products to Intel's finest quad-core battery killer is MSI, with the GT640. Though MSI hasn't yet specified which of the trifecta of Clarksfield chips it has inside the machine, we do know there's a 1GB NVIDIA Geforce GTS 250 taking care of graphics, as well as options for up to 4GB of DDR3 RAM, half a terabyte of storage and a Blu-ray burne