Intel Core i7 has no particlar meaning

i7 does not have any special meaning per se (after all Nehalem is 4 cores and 8 threads!). So think of i7 as somewhat of a generic identifier for now (there will be other identifiers to come that will make it more clear). It is a way separating the new and improved high end desktop processor brand from other existing brands. It represents a collection of factors and highlights unique attributes of the particular product in the family of processors, including performance and other features.