I'd really like to see extensive single-threaded benchmarks normalised over clock frequency. The two single thread benchmarks show a 2-3x factor improvement bet

I'd really like to see extensive single-threaded benchmarks normalised over clock frequency. The two single thread benchmarks show a 2-3x factor improvement between the Haswell and the E6600, but that's a 2.4 GHz to 4.0 GHz leap in clock. Power consumption aside, and given that the E6600 could be overclocked to ~4GHz in 2007, how far have we come in single-threaded perf?