AMD Ryzen Embedded 8640U 's Advantages
More modern manufacturing process (4nm vs 5nm)
Lower TDP (28W vs 150W)
Xeon 6507P 's Advantages
Released 10 months late
Higher specification of memory (6400 vs 5600)
Newer PCIe version (5 vs 4)
Larger L3 cache size (48MB vs 16MB)