AMD EPYC 7643P 's Advantages
Newer PCIe version (4 vs 3)
Higher base frequency (2.3GHz vs 2GHz)
Larger L3 cache size (256MB vs 6MB)
More modern manufacturing process (7nm vs 10nm)
Intel Atom x7809C 's Advantages
Released 7 months late
Higher specification of memory (4800 vs 3200)
Lower TDP (25W vs 225W)