I'm entertaining the idea of a new build (first one) but curious as to how much DDR3 will gain for me in PC power. I'm a console gamer so I don't need a super power PC, but I do enjoy HD videos and the like. My wife will most likely continue with her Facebook games so flash capabilities would be needed, but I don't think that is too high of a demand. As I understand it, there is a nominal difference between DDR2 and DDR3. Mainly power consumption and the transfer rate is twice as high, but tech specs aside; is there a big real world difference? Given the price diff. and my low budget am I shooting myself in the foot by going w/ a DDR2 setup?