Opteron 8220 SE (F2) 's Advantages
Higher specification of memory (667 vs 4)
Higher base frequency (2.8GHz vs 1.5GHz)
Intel Xeon D 1557 's Advantages
Released 9 years and 6 months late
Newer PCIe version (3 vs 1)
More modern manufacturing process (14nm vs 90nm)
Lower TDP (45W vs 120W)