AMD EPYC 9474F 's Advantages
Newer PCIe version (5 vs 4)
Higher base frequency (3.6GHz vs 3.5GHz)
Larger L3 cache size (256MB vs 16MB)
AMD Ryzen Embedded 8640U 's Advantages
Released 1 years and 5 months late
Higher specification of memory (5600 vs 4800)
More modern manufacturing process (4nm vs 5nm)
Lower TDP (28W vs 360W)