AMD Ryzen 7 5700U 's Advantages
Integrated graphics card
Lower TDP (25W vs 28W)
AMD Ryzen 5 PRO 8640U 's Advantages
Released 3 years and 3 months late
Higher specification of memory (5600 vs 4266)
Newer PCIe version (4 vs 3.0)
Higher base frequency (3.5GHz vs 1.8GHz)
Larger L3 cache size (16MB vs 8MB)
More modern manufacturing process (4nm vs 7nm)