Intel Xeon E5649 's Advantages
Higher base frequency (2.533GHz vs 2.4GHz)
Larger L3 cache size (12MB vs 10MB)
Xeon D 1715TER 's Advantages
Released 11 years late
Higher specification of memory (2667 vs 3)
Newer PCIe version (4 vs 2)
More modern manufacturing process (10nm vs 32nm)
Lower TDP (50W vs 80W)