Why these chips matter, their graphics performance is dominating compared to their Intel counterparts. AMD makes graphics cards and CPUs they took that experience and combined them into one great APU. There is a reason Intel teamed up to launch an Intel + AMD Vega chip together. These APUs to me should be marketed towards people trying to dip their toes into gaming at the 1080p level, and not trying to break the bank when starting.

Time Spy benchmark run. From PC World

In the Time Spy benchmark above the 484 points above the i3–7100 and the R5 2400G is 656 points ahead. This test is comparing it to the last generation Intel Chip; an 8th gen chip is analyzed below.

Benchmark from Forbes

In the Fallout 4 benchmark above from Forbes testing article, you can see when the R5 2400G is up against a GPU in most benchmarks; it will trade wins back and forth with the GTX 1030. The built iGPU on the i3 8100 is 18 frames behind the non overclocked R5 2400G.

The question becomes is it worth it, is it cheaper to buy something like the Ryzen 3 1300x and buy a GTX 1050ti? With this scenario, you would be getting better performance, but it would mainly depend on what pricing you can get your parts for.