AMD Ryzen 7 3700U 's Advantages
Lower TDP (35W vs 45W)
AMD Ryzen 9 5900H 's Advantages
Released 2 years and 3 months late
Higher specification of memory (4266 vs 2400)
Larger memory bandwidth (68.27GB/s vs 35.76GB/s)
Higher base frequency (3.3GHz vs 2.3GHz)
Larger L3 cache size (16MB vs 4MB)
More modern manufacturing process (7nm vs 12nm)