Intel Xeon E3 1275 v3 's Advantages
Released 2 years and 10 months late
Higher specification of memory (4 vs 3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.5GHz vs 3.2GHz)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (84W vs 130W)
Intel Xeon W3670 's Advantages
Larger L3 cache size (12MB vs 8MB)