Xeon L7555 's Advantages
Higher specification of memory (1333 vs 3)
Larger L3 cache size (18MB vs 15MB)
Intel Xeon E5 4607 's Advantages
Released 2 years and 2 months late
Newer PCIe version (3 vs 2)
Higher base frequency (2.2GHz vs 1.866GHz)
More modern manufacturing process (32nm vs 45nm)