iXBT Labs posted an Intel Core Generations Comparison

For tests, we shall have only Intel Core i7 processors, since the 1st Gen Core i5 had larger L3 cache than those of the 2nd and 3rd generations. Also, in our tests, clock rate should not exceed 2.4 GHz, this being the uncore limit for the 1st Gen quad-core Intel Core processors for the LGA1156 platform (we're dealing with a lot of cores here, verily). Why do we need that? Becuase the memory configuration is the same as that in LGA1155: both platforms are designed for dual-channel controllers. The second 'iteration' of LGA1155 gained support for DDR3-1600, but it's obviously not needed for today's tests.

  Intel Core Generations Comparison