Xeon 6756E 's Advantages
Released 14 years and 3 months late
Higher specification of memory (6400 vs 3)
Newer PCIe version (5 vs 2)
Larger L3 cache size (96MB vs 4MB)
More modern manufacturing process (5nm vs 45nm)
Intel Xeon E5507 's Advantages
Higher base frequency (2.266GHz vs 1.8GHz)
Lower TDP (80W vs 225W)