Intel Xeon D 1548 's Advantages
Released 3 years and 8 months late
More modern manufacturing process (14nm vs 32nm)
Lower TDP (45W vs 95W)
Intel Xeon E5 2660 's Advantages
Higher specification of memory (DDR3 vs DDR3)
Higher base frequency (2.2GHz vs 2GHz)
Larger L3 cache size (20MB vs 1.5MB)