Intel Xeon W 2102 's Advantages
Released 6 years and 6 months late
Higher specification of memory (2666 vs 1333)
Newer PCIe version (3 vs 2)
Higher base frequency (2.9GHz vs 2.133GHz)
More modern manufacturing process (14nm vs 32nm)
Xeon L5639 's Advantages
Larger L3 cache size (12MB vs 8.25MB)
Lower TDP (60W vs 120W)