Intel Xeon E3 1275 v5 's Advantages
Higher base frequency (3.6GHz vs 3.5GHz)
Lower TDP (80W vs 150W)
Xeon 6507P 's Advantages
Released 9 years and 4 months late
Higher specification of memory (6400 vs 2133)
Newer PCIe version (5 vs 3)
Larger L3 cache size (48MB vs 8MB)
More modern manufacturing process (5nm vs 14nm)