Intel Xeon W3690 's Advantages
Higher base frequency (3.466GHz vs 1.1GHz)
Larger L3 cache size (12MB vs 4MB)
Intel Xeon E3 1220L v3 's Advantages
Released 2 years and 7 months late
Higher specification of memory (1600 vs 3)
Newer PCIe version (3 vs 2)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (13W vs 130W)