Opteron 6282 SE 's Advantages
Higher base frequency (2.6GHz vs 1.8GHz)
Larger L3 cache size (8MB vs 1.5MB)
Intel Xeon D 1581 's Advantages
Released 4 years and 3 months late
Higher specification of memory (DDR3 vs DDR3)
Newer PCIe version (3 vs 2)
Lower TDP (65W vs 140W)