Intel Xeon X5670 's Advantages
Larger L3 cache size (12MB vs 8MB)
Intel Xeon E3 1270 v3 's Advantages
Released 3 years and 3 months late
Higher specification of memory (DDR3 vs DDR3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.5GHz vs 2.933GHz)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (80W vs 95W)