Intel Xeon E3 1275 v2 's Advantages
Higher base frequency (3.5GHz vs 2GHz)
Larger L3 cache size (8MB vs 1.5MB)
Intel Xeon D 1548 's Advantages
Released 3 years and 6 months late
Higher specification of memory (DDR3 vs DDR3)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (45W vs 77W)