I am just wondering. I cannot play Half Life 2 with my zx5000, so I am going to get a 1 gb stick to upgrade it from 512 mb to 1256 mb. Right now the game bluescreens even before I get to the main menu with the newest HP video drivers. I want dependable RAM that won't break and will be best for gaming. I have read on here and many other places to get either Crucial or Kingston. I can get both for about the same price, so which would you recommend? Thank you for the help!