It says 3 gigs because Windows XP 32bit is limited to 3 gigs. 32bit systems cant really see much beyond 3 gigs. So you have a gig of memory wasted. Given, the new OS would probably use that, but that leaves 3 gigs for your apps.
http://www.eurogamer.net/articles/2012-08-14-gamescom-claims-half-life-3-and-dragon-age-3-will-be-at-show Update: Dragon Age 3 and Half-Life 3 appearing on the Gamescom-compiled list of games at the show was "a mistake", the organisers have told Eurogamer. So who knows.
OOOOoh, so shiny! This forum harbors some of the best artists I know of. Thank you for letting me contribute. <3 <3 <3 Josh Singh, JFletcher, my jaw is at the floor.