No way the 4670k is faster then a i7 2700k. A 4670k at 4.2 will not out perform a 2700k at 4.8ghz. Anyone who says it is owns a 4670 and just wishes there it was as fast as a i7
Here is just one test review
http://www.cpu-world.com/Compare/577/Intel_Core_i5_i5-4670K_vs_Intel_Core_i7_i7-2700K.html