I want to upgrade my TouchSmart tm2t from 4gb RAM to 8gb. I am a Firefox tab freak, I have up to 40 open everyday to check several sites while running three or four programs at a time and I am feeling the pain. My I would like to go from 4gb to 8gb. I have always had good luck at Crucial and ran their scanner on my system. I have three choices. Which would be best?