What's the difference between a Core Duo and a Core 2 Duo processor?

I'm totally lost.

What's the difference between a Core Duo and a Core 2 Duo processor?

It's unadulterated simple.

Core 2 Duo is just the second classmates of Core Duo chips.

Core Duo = generation 1

Core 2 Duo = equals 2

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Core Duo behaves close to you would have 2 processors contained by your computer and the second can behave like it have up to 4
http://en.wikipedia.org/wiki/intel_core_... ---- go in that
both are the same man!