Am 24.08.2018 um 20:51 schrieb Mike Horvath:
> On 8/24/2018 9:51 AM, William F Pokorny wrote:


> 
> Interesting. I would have expected the bottom CPU to perform better due
> to more threads and higher clock speed.

i7-4770 has a max clock of 3.9 GHz,

Despite being rated at 2.8 GHz, the i5-8400 can actually go up to 4.0
GHz, given adequate cooling. The i7-4770 can only go as high as 3.9 GHz.

The i5-8400 also has more cores, which is more important than the number
of concurrent threads. Each thread beyond the number of cores only
translates to about 20% to 25% a core's worth of added computing power,
but only about 1/5 to 1/4 a core's worth, so the i7-4770 is effectively
worth about 5 threads.

In addition, the i5-8400 is four generations newer than the i7-4770,
which presumably translates to some additional performance improvements
here and there from miscellaneous optimizations.

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