Intel Xeon E3 1225 's Advantages
Released 2 years and 1 months late
Newer PCIe version (3 vs 2)
Higher base frequency (3.1GHz vs 2.533GHz)
More modern manufacturing process (32nm vs 45nm)
Xeon E5540 's Advantages
Higher specification of memory (1066 vs 3)
Larger L3 cache size (8MB vs 6MB)
Lower TDP (80W vs 95W)