Xeon E6510 's Advantages
Higher specification of memory (1333 vs 3)
Larger L3 cache size (12MB vs 8MB)
Opteron 4386 's Advantages
Released 2 years and 9 months late
Higher base frequency (3.1GHz vs 1.733GHz)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (95W vs 105W)