Intel Xeon X5677 's Advantages
Higher base frequency (3.466GHz vs 1.7GHz)
Larger L3 cache size (12MB vs 8MB)
Opteron A1120 's Advantages
Released 5 years and 10 months late
Higher specification of memory (DDR3 vs DDR3)
Newer PCIe version (3 vs 2)
Lower TDP (25W vs 130W)