AMD Ryzen 9 7900 's Advantages
Integrated graphics card
Higher base frequency (3.7GHz vs 3.2GHz)
Lower TDP (65W vs 350W)
AMD Ryzen Threadripper 7980X 's Advantages
Released 9 months late
Larger memory bandwidth (166.4GB/s vs 83.2GB/s)
Newer PCIe version (5 vs 5.0)
Larger L3 cache size (256MB vs 64MB)