AMD Ryzen 9 7900 's Advantages
Lower TDP (65W vs 170W)
AMD Ryzen 9 9950X 's Advantages
Released 1 years and 5 months late
Higher specification of memory (DDR5-5600 vs DDR5-5200)
Larger memory bandwidth (89.6GB/s vs 83.2GB/s)
Higher base frequency (4.3GHz vs 3.7GHz)
More modern manufacturing process (4nm vs 5nm)