Intel Xeon E3 1270L v4 's Advantages
Released 5 years and 3 months late
Higher specification of memory (DDR3-1866 vs DDR3)
Newer PCIe version (3 vs 2)
Higher base frequency (3GHz vs 2GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (45W vs 60W)
Intel Xeon L5638 's Advantages
Larger L3 cache size (12MB vs 6MB)