Xeon w7 3555 's Advantages
Released 13 years and 4 months late
Higher specification of memory (4800 vs 3)
Newer PCIe version (5 vs 3)
Higher base frequency (2.7GHz vs 2.2GHz)
Larger L3 cache size (75MB vs 3MB)
More modern manufacturing process (10nm vs 32nm)
Intel Xeon E3 1220L 's Advantages
Lower TDP (20W vs 325W)