CINEBENCH R15 is a cross-platform testing suite that measures hardware performance and is the de facto standard benchmarking tool for leading companies and trade journals for conducting real-world hardware performance tests. With the new Release 15, systems with up to 256 threads can be tested.
CINEBENCH is available for both Windows and OS X and is used by almost all hardware manufacturers and trade journals for comparing CPUs and graphics cards.
As a general rule, Cinebench favours more cores and threads over clockspeed (though clockspeed still plays a significant role), which is why the overclocked i5-7600K can't quite match the i7-6700 or the i7-6700K. It does take a lead over the i5-6600K, though, thanks to its bigger overclock.
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