Buying memory, got a question.

[csdanielson]

I'm buying memory on NewEgg. Currently I have two sticks of Crucial 256mb PC2100 in my system. I want to buy a 512mb piece of the same speed.

Would this have any negative effects? I remember reading somewhere if you mix 256mb with 512mb pieces you cannot have dual channel access or something.

Also: I am thinking about buying another hard drive. Right now I have a maxtor 40gb 7200rpm. I'm thinking of buying a Western Digital 120gb. Is this a bad idea? Also, should I install the new one in the "slave" slot or in its own slot?

 

[Dufrane]

I thought that you had to have the same size, speed, and brand of memory in order for dual channel to work. But I could be wrong.