Intel Xeon E5649 's Advantages
Higher base frequency (2.533GHz vs 2GHz)
Lower TDP (80W vs 350W)
Xeon Platinum 8481C 's Advantages
Released 11 years and 11 months late
Higher specification of memory (4800 vs 3)
Newer PCIe version (5 vs 2)
Larger L3 cache size (105MB vs 12MB)
More modern manufacturing process (10nm vs 32nm)