Xeon E7 4830 's Advantages
Lower TDP (105W vs 325W)
Xeon w7 3555 's Advantages
Released 13 years and 4 months late
Higher specification of memory (4800 vs 1333)
Higher base frequency (2.7GHz vs 2.133GHz)
Larger L3 cache size (75MB vs 24MB)
More modern manufacturing process (10nm vs 32nm)