Intel Xeon E3 1270 's Advantages
Higher base frequency (3.4GHz vs 2.6GHz)
Larger L3 cache size (8MB vs 6MB)
Pentium 1403 V2 's Advantages
Released 2 years and 9 months late
Higher specification of memory (DDR3-1600 vs DDR3)
More modern manufacturing process (22nm vs 32nm)