I have done some research here in the forums about 3 gb vs 4 gb ram installation in the C2D Macbook. I have a gig and currently facing over thousands of page-outs so time for new RAM for me , to mention I will also be running parallels. So I have narrowed down my options to two choices-: 1) 3 gb (2X1,1X1) - This looks like a good choice, but I am worried about the dual channel mode? Some people say the dual channel mode will be disabled and the RAM will be running slower than it deserved. Also, the Intel GMA gfx performance will take a hit. I still have to see any benchmark supporting or refuting this claim! Btw, I don't play any games or use any graphics heavy app, as i prefer to fire up my 360 for that! 2) 4 gb(2X2) Matched - This looks good also but I am thinking of the waste of 700 mb it will be as the system will recognize only 3.3 gb. I know some people had luck recognizing it to 4 gb but I am in no mood or have the money to play Russian Roulette! Now, I am not looking for some exhilarating performance in exchange for loads of ca$h in my hand, just mainly looking at the Cost Benefit Ratio. Which option is better in that term?