Intel Xeon E3 1290 's Advantages
Higher base frequency (3.6GHz vs 1.4GHz)
Larger L3 cache size (8MB vs 6MB)
Pentium 1405 V2 's Advantages
Released 2 years and 8 months late
Higher specification of memory (DDR3-1333 vs DDR3)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (40W vs 95W)