well would like to put the most ram in it. but have three gigs in it now. one single stick and two stick for three gigs. it only reads three gigs? and was wondering if i could put 4 gigs in it? is it a wast of money. nobody seems to know? dose anybody know if?let me know please. Thank You. its for a 2.33 Ghz Intel Core 2 duo. has any body put 4gigs in there's? and what happened.LET ME KNOW PLEASE.