Intel Xeon L5640 's Advantages
Lower TDP (60W vs 120W)
Intel Xeon E5 2680 v3 's Advantages
Released 4 years and 6 months late
Higher specification of memory (2133 vs 3)
Newer PCIe version (3 vs 2)
Higher base frequency (2.5GHz vs 2.266GHz)
Larger L3 cache size (30MB vs 12MB)
More modern manufacturing process (22nm vs 32nm)