Opteron 2220 's Advantages
Higher base frequency (2.8GHz vs 1.3GHz)
Intel Xeon D 1577 's Advantages
Released 9 years late
Higher specification of memory (4 vs 2)
Newer PCIe version (3 vs 1)
More modern manufacturing process (14nm vs 90nm)
Lower TDP (45W vs 95W)