Opteron 6348 's Advantages
Released 2 years and 8 months late
Higher specification of memory (1866 vs 1333)
Higher base frequency (2.8GHz vs 2.666GHz)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (115W vs 130W)
Xeon X7542 's Advantages
Larger L3 cache size (18MB vs 8MB)