Intel Xeon E5 2687W v2 's Advantages
Higher base frequency (3.4GHz vs 3.2GHz)
Larger L3 cache size (20MB vs 8.25MB)
Intel Xeon W 2104 's Advantages
Released 3 years and 11 months late
Higher specification of memory (DDR4-2666 vs DDR3)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (120W vs 130W)