Both models
i5-7500 and
i3-7100 are based on
Kaby Lake architecture.
The first Kaby Lake CPU was released in August 2016. It uses a 14 nm process and was the first architecture in breaking the previous tick-tock model. Actually, it is not that different from the preceding Skylake: it has 64kB of L1 cache and 256kB L2 cache per core.
Using the multithread performance as a reference, the i5-7500 gets a score of
191.7 k points while the i3-7100 gets
126.5 k points.
Summarizing, the
i5-7500 is
1.5 times faster than the
i3-7100. To get a proper comparison between both models, take a look to the data shown below.