AMD Ryzen 3 4300U 's Advantages
Lower TDP (10W vs 15W)
AMD Ryzen 7 6800U 's Advantages
Released 2 years late
Higher specification of memory (LPDDR5-6400 vs LPDDR4-4266)
Larger memory bandwidth (76.8GB/s vs 68.27GB/s)
Newer PCIe version (4.0 vs 3.0)
Larger L3 cache size (16MB vs 4MB)
More modern manufacturing process (6nm vs 7nm)