Intel Xeon E5 2640 v3 's Advantages
Higher base frequency (2.6GHz vs 2.5GHz)
Lower TDP (90W vs 225W)
Intel Xeon w7 2495X 's Advantages
Released 8 years and 5 months late
Higher specification of memory (DDR5-4800 vs DDR4-1866)
Newer PCIe version (5 vs 3)
Larger L3 cache size (45MB vs 20MB)
More modern manufacturing process (10nm vs 22nm)