Remember that Intel is up for consolidating and clearing up the confusions behind the processor’s naming and cores with its branding restructure by moving it to a single naming umbrella Intel® Core™ Processor family. Therefore, the naming goes on like inline with the Core i7, Core i5 and Core i3.
The three new chips under the 800-series is just like a down-graded counterpart of the previous high-end 900-series.The new Core i7’s include the 2.93GHz Core i7 870 at $562, the $284 Core i7 860 at 2.8GHz, as well as the 2.6GHz Core i5 750 chip at $196. However, the Core-i5 is somehow same with these versions, although the Hyperthreading capability is stripped out.
CNET has put Core i7 860 over-clocked from 2.8GHz to 3.39GHz against Core i7 920-based PCs that cost about $500 more, on a comparison and benchmarking test of Falcon Northwest Talon gaming PC. Then the result tells that the much cheaper Core i7 860 is closely matched with Core i7 920, leaving only a small difference in performance.