Intel Xeon X5660 's Advantages
Higher base frequency (2.8GHz vs 2GHz)
Intel Xeon E5 2628L v3 's Advantages
Released 4 years and 6 months late
Higher specification of memory (1866 vs 3)
Newer PCIe version (3 vs 2)
Larger L3 cache size (25MB vs 12MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (75W vs 95W)