Hi Tech Legion posted a review on the Intel Core i5 661 33nm Dual Core LGA 1156 Clarkdale Processor

I have heard many people say that the Dual Core processor is obsolete, I am going to have to argue that. There is a market for the dual core and that is mainstream, your average user needs a reliable computer platform to perform their everyday tasks and would not notice a difference that two extra cores would provide. It's all about the computing experience and getting the job done be it, surfing the internet, editing photos, watching an HD movie, or listening to music they want a platform that performs effortlessly and the Intel Core i5 Clarkdale Series is a solution.

Intel Core i5 661 33nm Dual Core LGA 1156 Clarkdale Processor Review