Intel Xeon E3 1225 v3 's Advantages
Released 3 years and 3 months late
Higher specification of memory (1600 vs 3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.2GHz vs 2GHz)
Larger L3 cache size (8MB vs 4MB)
More modern manufacturing process (22nm vs 45nm)
Intel Xeon E5503 's Advantages
Lower TDP (80W vs 84W)