Xeon X3480 's Advantages
Higher base frequency (3.066GHz vs 2.9GHz)
Lower TDP (95W vs 120W)
Intel Xeon W 2102 's Advantages
Released 7 years and 3 months late
Higher specification of memory (2666 vs 1333)
Newer PCIe version (3 vs 2)
Larger L3 cache size (8.25MB vs 8MB)
More modern manufacturing process (14nm vs 45nm)