I just got a laptop with 1 gig or ram, core 2 duo 1.6 ghz, nvidia geforce go 7400. I am now aware that the only thing i can change on a laptop is ram. If i got another 1 gb of ram or even 500 mb of ram Would i notice a big difference and if yes then in what ways? also how much money does ram usually cost? i play a lot of games on my computer another question i have is about 32 and 64 bit. Whats the difference and is one better than the other one.