The RAM I already have in my machine is the stock 2x1g FB-DIMM 800. I heard that getting 4 equal RAM sticks increases the speed more than just buying a larger RAM stick. I will use this extra RAM mostly for gaming on Windows and OS. Using http://www.newegg.ca/Store/SubCategory.aspx?SubCategory=551&name=Mac-Memory as a guide, what would be the best way to increase my speed for about $70-$150? Thanks in advance. Sorry if I'm asking for much, I'm just confused on this subject. Merry Christmas!