Xeon E6540 's Advantages
Lower TDP (105W vs 240W)
Xeon w7 2565X 's Advantages
Released 14 years and 5 months late
Higher specification of memory (4800 vs 1333)
Newer PCIe version (5 vs 2)
Higher base frequency (3.2GHz vs 2GHz)
Larger L3 cache size (37.5MB vs 18MB)
More modern manufacturing process (10nm vs 45nm)