Cinebench R15 is more than 10 years old, why are you using it to gauge processor performance? Also it does not test the APU performance of the Radeon Vega 6 IGP so again why are you using it?
If you are questioning graphics performance try using a graphics benchmark like 3DMark. The free version includes a test specific to APU called Night Raid.
https://benchmarks.ul.com/3dmark?
Ryzen R7 5700X | B550 Gaming X | 2x16GB G.Skill 3600 | Radeon RX 7900XT
Ryzen R7 5700G | B550 Gaming X | 2x8GB G.Skill 4000 | Radeon Vega 8 IGP
Ryzen R5 5600 | B550 Gaming Edge | 4x8GB G.Skill 3600 | Radeon RX 6800XT