I have an Acer i7 model AM3910-E3122 with 4gb of 1333mhz DDR3 Ram and an old gt320 1024Mb graphics card. I want to upgrade, and the max RAM I can go to is 16gb, which I want to do, and then I plan on obviously upgrading my graphics card to better support online gaming. My question is do I need to stay with the 1333mhz and what do you suggest for best RAM for gaming?