Intel Xeon X5660 's Advantages
Larger L3 cache size (12MB vs 8MB)
Intel Xeon E3 1285 v3 's Advantages
Released 3 years and 3 months late
Higher specification of memory (4 vs 3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.6GHz vs 2.8GHz)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (84W vs 95W)