Intel's two new Core i7 CPUs (860 and 870) are mid-range counterparts to its top-of-the-line Core i7 900-series chips, and initial tests (using Intel's new DP55KG motherboard) indicate their performance follows suit. Our early tests also show the new entry-level Core i5 750 is the one to watch when it comes to best bang for your buck.Intel's full processor breakdown--including the axing of its Core i7 940 processor--includes some potentially confusing differences between the chips. So here's what you need to know.
Intel's New Core i7 and Core i5 Processors Explained - PC World