Attached Link: http://tinyurl.com/c57gj

There is no extra cost to run a dual core CPU with CS, just as there is no extra cost to run a Dual CPU computer. I don't know if the extra CPU (dual processor or dual core) will count as 2 render nodes, but you don't need to purchase an additional license (node or otherwise) to run CS on a dual core CPU. I do know that a dual CPU machine will show up as 2 "gray boxes" on the host if the dual cpu machine is set up as a node.

For more information on the speed of a dual core vs a dual cpu machine refer to the post by charlesb in the attached link.

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