Opteron 8220 's Advantages
Higher specification of memory (667 vs 4)
Higher base frequency (2.8GHz vs 1.7GHz)
Intel Xeon D 1537 's Advantages
Released 8 years and 9 months late
Newer PCIe version (3 vs 1)
More modern manufacturing process (14nm vs 90nm)
Lower TDP (35W vs 95W)