AMD Ryzen 3 2300U 's Advantages
Lower TDP (15W vs 25W)
AMD Ryzen 3 5300U 's Advantages
Released 3 years late
Higher specification of memory (4266 vs 2400)
Larger memory bandwidth (51.2GB/s vs 35.76GB/s)
Higher base frequency (2.6GHz vs 2.0GHz)
More modern manufacturing process (7nm vs 14nm)