so if i were to put, say two gigs of ram in a laptop and the laptop maxes out at 2 gig (as in, core duo pro), would it be better to get two 1gb sticks, or just one 2 gb stick? is the performance any different?
All Intel Core Macs support dual channel memory access if matching modules are installed. The customary estimate is that this gives a 6% - 8% real world performance benefit.