You guy forget that these people are out for money. Less ram = lower building prices even it is like 10 bucks... think of how many consoles they make. All the systems need to do is be able to compare to its "brother" systems. M$ knows what they're doing. If they feel that games would need more ram, then they would supply. As for Doom3, your pc is continuesly running background programs, lagging your computer, those specs are the norm. Xbox runs no other programs while games are playing, therefore the need for uber amounts of ram isn't needed.