Hi, I'm currently using MacBook 13.3 unibody (MacBook5,1). And I plan to upgrade the ram becuase 2gb is really not enough to run vmware. I found OWC and they claim that 6gb is ok to run in MacBook5,1. I'm not sure is this really work cause Apple said 6gb(4gb+2gb) which is not in pair will not help in the performance. So, I would like to know is there anyone tried to upgrade to 6gb in their MacBook5,1? Is it really work well?? Thank You.