AMD Ryzen 7 2700's Advantages
Lower TDP (65W vs 120W)
AMD Ryzen 7 7800X3D's Advantages
Released 4 years and 9 months late
Integrated graphics card
Higher specification of memory (DDR5-5200 vs DDR4-2933)
Larger memory bandwidth (83.2GB/s vs 43.71GB/s)
Newer PCIe version (5.0 vs 3.0)
Higher base frequency (4.4GHz vs 3.2GHz)
Larger L3 cache size (96MB vs 16MB)
More modern manufacturing process (5nm vs 12nm)