Xeon E6540 's Advantages
Lower TDP (105W vs 280W)
AMD Ryzen Threadripper PRO 5955WX 's Advantages
Released 12 years late
Higher specification of memory (3200 vs 1333)
Newer PCIe version (4 vs 2)
Higher base frequency (4GHz vs 2GHz)
Larger L3 cache size (64MB vs 18MB)
More modern manufacturing process (7nm vs 45nm)