In dolphin, if you overclock, the two CPUs will perform almost identically, with the exception that the i7's smidge of extra cache will give it a 1-4% edge. At stock clocks, the i7 will have a larger lead as it's clocked a little higher by default. They should both overclock as high (maybe slightly more for the i5, even, but that's speculation and I've yet to see it confirmed).
In heavily multi-threaded applications such as rendering, video editing and image processing (i.e. high-end content creation) the i7 will have a significant edge as hyperthreading allows the OS to schedule instructions more effectively for the CPU's ALUs. It only tends to be these few apps which benefit, and most people won't do them to a level where further investment is a good idea. Either way, the i5 will easily beat anything AMD have on offer, so it's not like you're getting a bad CPU in any way.
In heavily multi-threaded applications such as rendering, video editing and image processing (i.e. high-end content creation) the i7 will have a significant edge as hyperthreading allows the OS to schedule instructions more effectively for the CPU's ALUs. It only tends to be these few apps which benefit, and most people won't do them to a level where further investment is a good idea. Either way, the i5 will easily beat anything AMD have on offer, so it's not like you're getting a bad CPU in any way.
OS: Windows 10 64 bit Professional
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56