Memory

[wharfshrimp]

Many DDR and all DDR2 desktops and motherboards have a built-in feature called dual channel that allows you to utilize the bandwidth of two modules at the same time. For these systems, you need to install modules in pairs for maximum performance, so if you’re going to be adding 512MB of memory, you are better off buying two 256MB modules, as opposed to one 512MB one.

Is the true .

[DIrvine]

Hello

Yes it is true, if you do not have modules in each bank then the system will only be using one channel. Therefore you will not get the added benefit of DDR or DDR2

Regards