the New 2010 Intel® Core™ i5,i7 Processor

The new Core i5 processors...... As the name would suggest, these processors do not represent a new architecture but rather a mainstream release of processors based on the Nehalem architecture, which were previously available only as part of the Core i7 line.
Of course, the marketing of the new products indicates that they are intended to be seen as less capable products than the existing Core i7 processors. But marketing often sacrifices truth for simplicity. For example, Intel currently offers numerous products under the Pentium name, but these products are in fact Core 2 Duos and very similar to the Core 2 Duo branded products. Is Core i5 simply a marketing term, or does it indicate fundamental differences in the processor?
Intel has said this will be enhanced with the new Core i5 products as well as with the new Core i7 860 and 870. The Core i5 750, for example, should be able to accelerate from its stock speed of 2.66Ghz to speeds as high as 3.2Ghz. This is a substantial improvement, and it allows new Core i5 processors to perform as well as current Core i7 processors in applications that only use one or two cores. For more in-depth information, read a full review of the Core i5's performance.