Hey, since new applications are requiring more ram I thought i might step my PC up a notch. Right now I have 1gig and i would like to get 2more gigs so all togeather I will have 3 gigs. So I want your opinions on these two companies "Azen" and "COMSTAR". Also I wanna know what the difference is between 400mhz and 533mhz and if i should buy a gig stick thats 400mhz or spend a extra money for a 533mhz stick. And I like to play lots of games. Thanks for the help