Opteron 6274 's Advantages
Released 2 years and 2 months late
Larger L3 cache size (16MB vs 8MB)
More modern manufacturing process (32nm vs 45nm)
Xeon X3430 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (2.4GHz vs 2.2GHz)
Lower TDP (95W vs 115W)