AMD EPYC 9554 's Advantages
Newer PCIe version (5 vs 4)
Larger L3 cache size (256MB vs 16MB)
AMD Ryzen Embedded 8840U 's Advantages
Released 1 years and 5 months late
Higher specification of memory (5600 vs 4800)
Higher base frequency (3.3GHz vs 3.1GHz)
More modern manufacturing process (4nm vs 5nm)
Lower TDP (28W vs 360W)