Just finished looking at CPU benchmarks that I've run on some of my computers over the years...
(I didn't save any results from my Core2 Extreme X6800 system or Athlon 64 based systems unfortunately)
Super Pi mod 1.5 XS 1M (lower is better)
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Core2 Q6600 @ 3.6ghz - 14.500s
Core2 Q9650 @ 4ghz - 11.531s
i7 930 @ 4ghz - 10.281s
i7 2600k @ 4.6ghz - 8.171s
i7 7700k @ 4.7ghz - 7.892s
Super Pi mod 1.5 XS 32M (lower is better)
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Core2 Q6600 @ 3.5ghz - 16m 2.875s
Core2 Q9650 @ 4ghz - 12m 15.579s
i7 930 @ 4ghz - 10m 2.302s
i7 2600k @ 4.6ghz - 7m 31.903s
i7 7700k @ 4.7ghz - 6m 48.621s
Cinebench 10 (higher is better)
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Core2 Q9650 @ 3.9ghz - xcpu = 17287 cb
i7 930 @ 4ghz - 1cpu = 5863 cb, xcpu = 23603 cb
i7 2600k @ 4.5ghz - 1cpu = 7405 cb, xcpu = 29112 cb
Cinebench 11.5 (higher is better)
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i7 930 @ 4ghz - 6.83 pts
i7 2600k @ 4.6ghz - 8.9 pts
i7 7700k @ 4.7ghz - 11.42 pts
Cinebench 15 (higher is better)
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i7 2600k @ 4.6ghz - 808 cb
i7 7700k @ 4.7ghz - 1052 cb
CPU-Z benchmark (higher is better)
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i7 2600k @ 4.6ghz - 1741 single-threaded / 7470 multi-threaded
i7 7700k @ 4.7ghz - 2361 single-threaded / 10189 multi-threaded
It's interesting to be able to look back in time and see how much faster cpus have gotten.
I also didn't realize that I had been using quad-cores for so long... every cpu benchmarked here is has 4 cores (some without HT though)