my buddy has a dell with those same specs, i7/12gb
used to have and amd x2 4400 watercooled sli 7800gts couple years ago, now i use gateway 6860fx, 17' gaming screen keyboard,win7-64x,300gb sata 7.2kRPM,8800gts!,4gb ocz ram, some intel core2duo 2.2ghz , and a bunch of external drives and speakers.. I dont need much power but nice enough for laptop-desktop replacement.