Opteron 2212 (F3) 's Advantages
Lower TDP (95W vs 140W)
Intel Xeon W 2155 's Advantages
Released 11 years late
Higher specification of memory (2666 vs 2)
Newer PCIe version (3 vs 1)
Higher base frequency (3.3GHz vs 2GHz)
More modern manufacturing process (14nm vs 90nm)