Xeon E7 2830 's Advantages
Larger L3 cache size (24MB vs 13.75MB)
Lower TDP (105W vs 120W)
Intel Xeon W 2150B 's Advantages
Released 6 years and 8 months late
Higher specification of memory (2666 vs 1333)
Higher base frequency (3GHz vs 2.133GHz)
More modern manufacturing process (14nm vs 32nm)