Opteron 6348 's Advantages
Released 2 years and 8 months late
Higher specification of memory (1866 vs 1333)
Higher base frequency (2.8GHz vs 2GHz)
More modern manufacturing process (32nm vs 45nm)
Xeon E7540 's Advantages
Larger L3 cache size (18MB vs 8MB)
Lower TDP (105W vs 115W)