Intel Xeon W3670 's Advantages
Released 3 years and 6 months late
Newer PCIe version (2 vs 1)
Higher base frequency (3.2GHz vs 2.8GHz)
More modern manufacturing process (32nm vs 90nm)
Opteron 8220 's Advantages
Higher specification of memory (667 vs 3)
Lower TDP (95W vs 130W)