Xeon E 2176M 's Advantages
Released 11 years and 2 months late
Higher specification of memory (2666 vs 2)
Newer PCIe version (3 vs 1)
More modern manufacturing process (14nm vs 90nm)
Lower TDP (45W vs 95W)
Opteron 2220 's Advantages
Higher base frequency (2.8GHz vs 2.7GHz)