AMD Ryzen 7 3700X's Advantages
Lower TDP (65W vs 120W)
AMD Ryzen 7 7800X3D's Advantages
Released 3 years and 6 months late
Integrated graphics card
Higher specification of memory (DDR5-5200 vs DDR4-3200)
Larger memory bandwidth (83.2GB/s vs 47.68GB/s)
Newer PCIe version (5.0 vs 4.0)
Higher base frequency (4.4GHz vs 3.6GHz)
Larger L3 cache size (96MB vs 32MB)
More modern manufacturing process (5nm vs 7nm)