AMD Ryzen 3 Pro 5450U 's Advantages
Lower TDP (15W vs 30W)
AMD Ryzen 7 PRO 7840U 's Advantages
Released 2 years and 3 months late
Higher specification of memory (7500 vs 4266)
Larger memory bandwidth (89.6GB/s vs 51.2GB/s)
Newer PCIe version (4.0 vs 3.0)
Higher base frequency (3.3GHz vs 2.6GHz)
Larger L3 cache size (16MB vs 8MB)
More modern manufacturing process (4nm vs 7nm)