Intel Xeon E5649 's Advantages
Larger L3 cache size (12MB vs 8MB)
Xeon E 2104G 's Advantages
Released 7 years and 5 months late
Higher specification of memory (DDR4-2666 vs DDR3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.2GHz vs 2.533GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (65W vs 80W)