Intel Xeon E5 2603 's Advantages
Released 111 years and 2 months late
Lower TDP (80W vs 160W)
Intel Xeon E5 2693 v3 's Advantages
Higher specification of memory (DDR4-2133 vs DDR3)
Higher base frequency (2.8GHz vs 1.8GHz)
Larger L3 cache size (30MB vs 10MB)
More modern manufacturing process (22nm vs 32nm)