AMD EPYC 9734 's Advantages
Higher specification of memory (DDR5-4800 vs DDR4-3200)
Newer PCIe version (5 vs 4)
More modern manufacturing process (5nm vs 7nm)
AMD EPYC 7643P 's Advantages
Higher base frequency (2.3GHz vs 2.2GHz)
Lower TDP (225W vs 340W)