AMD Ryzen Threadripper Pro 3955WX 's Advantages
Larger memory bandwidth (204.8GB/s vs 83.2GB/s)
Higher base frequency (3.9GHz vs 3.7GHz)
AMD Ryzen 9 7900 's Advantages
Released 2 years and 6 months late
Integrated graphics card
Higher specification of memory (5200 vs 3200)
Newer PCIe version (5.0 vs 4.0)
More modern manufacturing process (5nm vs 7nm)
Lower TDP (65W vs 280W)