Intel Xeon D 1571 's Advantages
Released 5 years and 11 months late
Newer PCIe version (3 vs 2)
More modern manufacturing process (14nm vs 45nm)
Lower TDP (45W vs 105W)
Xeon E6540 's Advantages
Higher specification of memory (1333 vs 4)
Higher base frequency (2GHz vs 1.3GHz)
Larger L3 cache size (18MB vs 1.5MB)