I'm thinking about upgrading the memory on my Dell Inspiron 6000 laptop from 512 MB to 1 gig. The question I have is, should I get a single 1 gig stick or two 512 MB sticks. I recall reading somewhere that the two stick configuration is faster because a single chip has much denser circuitry and thus takes longer for the electrical signals to propagate through all the gates in the memory.

Also 533 Mhz RAM will run fine on a system that supports only 400 Mhz RAM right?

Sorry if these questios have been asked before, just link me to the post. Thanks!