AMD EPYC 9334 's Advantages
Higher specification of memory (DDR5-4800 vs DDR4-3200)
Newer PCIe version (5 vs 4)
Higher base frequency (2.7GHz vs 2.3GHz)
More modern manufacturing process (5nm vs 7nm)
Lower TDP (210W vs 225W)
AMD EPYC 7643P 's Advantages
Released 10 months late
Larger L3 cache size (256MB vs 128MB)