Intel Xeon E5503 's Advantages
Lower TDP (80W vs 140W)
Intel Xeon E7 8860 v3 's Advantages
Released 5 years and 3 months late
Higher specification of memory (DDR3 vs DDR3)
Newer PCIe version (3 vs 2)
Higher base frequency (2.2GHz vs 2GHz)
Larger L3 cache size (40MB vs 4MB)
More modern manufacturing process (22nm vs 45nm)