Intel Xeon L5640 's Advantages
Higher base frequency (2.266GHz 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 (1866 vs 3)
Newer PCIe version (3 vs 2)
More modern manufacturing process (28nm vs 32nm)
Lower TDP (25W vs 60W)