Hi all,I was thinking of adding another stick 512k ram to my existing x02 512k (for a total of 1.5gb ram). I currently have 02 sticks of kingston infenion rams running at 400mhz (dual channel). I play games and surf the net mostly with my pc,will it make a significant difference if I were to add it another stick of 512k ram? If so,must only be kingston infenion rams or I could use other brands with the same speed? Thks in advance.