Both models
i3-9100 and
i7-8700k are based on
Coffee Lake architecture.
Coffee Lake is the second refinement of Intel’s 14nm (Tri-Gate) technology. While it uses LGA1151 socket, it is incompatible with previous generations due to electrical changes in socket’s pins so these CPUs require Z370 chipset. This kind of generation introduced more cores in every range to compete with new AMD’s architecture. Coffee Lake uses DDR4 memory at 2400MHz for i3 and at 2666MHz for i5, i7 CPUs plus iGPU frequency has been increased 50MHz with respect to previous generation.
Using the multithread performance as a reference, the i3-9100 gets a score of
229.2 k points while the i7-8700k gets
443.8 k points.
Summarizing, the
i7-8700k is
1.9 times faster than the
i3-9100. To get a proper comparison between both models, take a look to the data shown below.