Intel i7 2700k Processor - New Sandy Bridge

Intel i7 2700k is the latest and new Intel Sandy Bridge processor with Intel socket 1155 motherboard, Intel i7 2700k processor has 3.5 Ghz of default clock and claimed has 3.9 Ghz of turbo clock, i7 2700k also comes with unlocked clock multiplier, 8mb of L3 cache, 4 cores with 8 threads. Is it better than another quad cores processor of Sandy Bridge with K series? well let see the previous top