Pentium 1405 V2 's Advantages
Released 3 years and 10 months late
Higher specification of memory (1333 vs 3)
Newer PCIe version (3 vs 2)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (40W vs 80W)
Intel Xeon E5640 's Advantages
Higher base frequency (2.666GHz vs 1.4GHz)
Larger L3 cache size (12MB vs 6MB)