Hi, Currently my system consists of two sticks of 256MB DDR333 RAM and seems to be running in dual channel. My question is, I've still got a 3rd RAM slot free, and was wondering if I added another DDR333 RAM stick, would it interfere with the dual channel, or supplement it? Also, I can't run different speed rated RAM in one system correct? Lastly, currently my FSB is @ 133MHz while my RAM is running @ 166MHz. Any dangers or problems running it like that? Thanks, appreciate any guidance.