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Processor Families: Pentium Dual Core and Core Duo

Dear forum users,

I purchased my Dell E1705 around 2 years ago with a Core Duo technology (note that it is not Core 2 Duo). Certainly, Core Duo was eliminated from the mobile market and Core 2 Duo is currently being sold. Recently I noticed that Pentium Dual Core processors became an option. Would anyone please be able to tell me, what is the difference between Core Duo and Pentium Dual Core? My processor is 1.86 GHz T2350, I believe codename Yonah. It appears Pentium Dual Core is also based on Yonah. And could you also tell me how the two compare in terms of performance? (Of course, if we compare two processors of similar clock speeds)

Thank you!

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