Intel Xeon E5503 's Advantages
Released 3 years and 7 months late
Higher specification of memory (3 vs 2)
Newer PCIe version (2 vs 1)
Higher base frequency (2GHz vs 1.8GHz)
More modern manufacturing process (45nm vs 90nm)
Opteron 2210 EE 's Advantages
Lower TDP (45W vs 80W)