AMD EPYC 7663P 's Advantages
Larger L3 cache size (256MB vs 128MB)
AMD EPYC 8434PN 's Advantages
Higher specification of memory (DDR5-4800 vs DDR4-3200)
Newer PCIe version (5 vs 4)
More modern manufacturing process (5nm vs 7nm)
Lower TDP (155W vs 240W)