Intel Xeon W 2140B 's Advantages
Released 7 years and 9 months late
Higher specification of memory (2666 vs 3)
Newer PCIe version (3 vs 2)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (120W vs 130W)
Intel Xeon W3680 's Advantages
Higher base frequency (3.333GHz vs 3.2GHz)
Larger L3 cache size (12MB vs 11MB)