Xeon L5639 's Advantages
Larger L3 cache size (12MB vs 8MB)
Lower TDP (60W vs 84W)
Intel Xeon E3 1225 v3 's Advantages
Released 2 years and 4 months late
Higher specification of memory (1600 vs 1333)
Newer PCIe version (3 vs 2)
Higher base frequency (3.2GHz vs 2.133GHz)
More modern manufacturing process (22nm vs 32nm)