The latest revision to Dell's flagship line, the massive XPS M1730 features a redesigned case that combines familiar touches, such as flashing LEDs beneath the speaker grills, with newer elements, such as the integrated Logitech GamePanel LCD and 10-key numeric keypad. But, as with any gaming-oriented system, the most important features are inside the case. Like its predecessors, the XPS M1730 offers the highest-end components available--in the case of our review unit, a top-of-the-line Intel Core 2 Extreme processor, Nvidia SLI graphics, the first mobile PhysX processor, and two massive 7,200rpm...