Intel Xeon X5647 's Advantages
Higher base frequency (2.933GHz vs 1.6GHz)
Intel Xeon E5 2603 v3 's Advantages
Released 3 years and 7 months late
Higher specification of memory (DDR4-1600 vs DDR3)
Newer PCIe version (3 vs 2)
Larger L3 cache size (15MB vs 12MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (85W vs 130W)