Now no longer available from Dell as a new system purchase, but is in factory outlet. This desktop at one time filled the gap between the media-oriented XPS 420/430 and the high-end XPS 730x. There is no physical difference(s) between the 630 and the 630i.
Nearby & related entries: 1  inert filling. 2  inert gas. 3  inert gas narcosis. 4  inert mine. 5  inerted. 6  inertia beverage group. 7  inertia creeps. 8  inertia welding. 9  inertia, electro-magnetic. 10  inertial.
Inertia: tendency of an object to resist changes in its velocity. An object at rest has zero velocity - and (in the absence of an unbalanced force) will remain with a zero velocity. Such an object will not change its state of motion (i.e., velocity) unless acted upon by an unbalanced force. An object in motion with a velocity of 2 m/s, East will (in the absence of an unbalanced force) remain in motion with a velocity of 2 m/s, East.  Objects resist changes in their velocity.