So I'm thinking of getting more ram for my computer (fairly old, my older sister had it in high school), and I have a question about bus speed compatibilities. Is it possible to use ram with a faster listed bus speed than my motherboard? to elaborate, My motherboard supports ddr sdram (sodimm) with a speed of 166 mhz. can i use 333mhz ram with it? or does it not work that way?