Duo is a part of the whole name - Core2Duo. So when you are talking about a single processor, no matter that there are two cores inside it, you should say: "My Core2Duo IS faster..."

stiller and Mera

My sister and I were playing a romantic duo.

The Latin word for two is "duo".

The Latin word for two is "duo".

The Latin word for two is "duo".

The Latin word for two is "duo".

The Latin word for two is "duo".

The Latin word for two is "duo".

The Latin word for two is "duo".

The Latin word for two is "duo".

The Latin word for two is "duo".

There's just two in a duo. A duo is a group of two, or a pair.