New
#11
Typically the entire amout IS mapped, though you may be able to make the viewport smaller, it's typically not done. If you have a 512meg card, you'll be 4gig - 0.5 gig - a little more for other hardware. A 1 gig card means 4-1-a smidge, 2x768 means 4-1.5-a smidge and two 1 gig means 4-2-a smidge. Been that way for a long time.