The AMD Ryzen 7 8700G wins in 8 out of 14 comparable specs, with 4 ties. Its biggest advantage is L2 Cache (100% better).
Ryzen 7 3800X wins in 2 specs (L3 Cache: 100% better).
Recommendation
Choose Ryzen 7 8700G if you want the best overall performance — especially l2 cache.
Choose Ryzen 7 3800X if l3 cache matters more to you.
