Intel Xeon D 1548 's Advantages
Released 5 years and 8 months late
Newer PCIe version (3 vs 2)
Higher base frequency (2GHz vs 1.9GHz)
Lower TDP (45W vs 115W)
Opteron 6168 's Advantages
Higher specification of memory (DDR3 vs DDR3)
Larger L3 cache size (12MB vs 1.5MB)