The main ideas of dual-channel DDR?

[Jingleheimer]

I've searched the web some on the topic of dual-channel DDR and I
haven't found a concise description of what it is and how it works, or
an answer to the practical question of how much good it is.

I guess it is a motherboard feature and you can use the same RAM sticks
in either type of mobo. Is that right?

Is it simply a doubling of the width of the data word fetched during
each cycle, hence a doubling of memory throughput? Minus the waste due
to branching or what?

What are the measurable performance gains of dual-channel DDR over
ordinary DDR?

 

[ToolPackinMama]

I've searched the web some on the topic of dual-channel DDR and I
haven't found a concise description of what it is and how it works

http://www.nvidia.com/view.asp?IO=feature_dualddr

 

[tmack3]

Its a way to sell more memory sticks.