Dual core is a generic name used for systems having 2 processors. But Core 2 Duo is a branded product of Intel.
Intel Dual Core vs Core 2 Duo :-
We can now check the difference between Dual Core and Core 2 Duo.
All processor manufacturer’s can use the term dual core for their product having two cores (CPU). But only Intel can use the term core 2 Duo.
Example : AMD has Dual Core processors.
Also Core 2 Duo Dual Core difference exists in their performance. I think Core 2 Duo is much more faster than dual core.