AMD Ryzen 9 5900HX 's Advantages
Released 9 months late
Higher specification of memory (4266 vs 2933)
Larger memory bandwidth (68.27GB/s vs 45.8GB/s)
Higher base frequency (3.3GHz vs 2.6GHz)
Larger L3 cache size (16MB vs 8MB)
More modern manufacturing process (7nm vs 14nm)
Intel Core i5 10400H 's Advantages
Lower TDP (45W vs 54W)