I learned about the pageins/outs after reading through the previously posted RAM threads. I guess what im asking for are recommendations. I have a MBP C2D 2.16 1GB Ram... I have seen a lot of people buy 2 1GB sticks even though they already have 1GB in. Is there a need to have matched pairs by manufacture as well? Given that my pre-SR MBP will only pick up 3GB, if i do put 4GB can i still get the benefits of having a matched pair, minus the use of the extra GB for memory purposes? I do quite a bit of gaming, as well as keeping 20-30 tabs worth of web pages open for research that i do(plus iTunes iPhoto etc..). Would the speed increase of a matched pair be more beneficial for me, or the 3GB? Here is a link to what NewEgg has, good stuff? http://www.newegg.com/Product/Produ...FG=CFG003MacBook Pro 15.4-inch 2.16GHz&DEPA=0 Who sells reliable 2GB sticks at less than Apple prices?