Intel Xeon D 1577 's Advantages
Released 2 years and 8 months late
More modern manufacturing process (14nm vs 22nm)
Lower TDP (45W vs 84W)
Intel Xeon E3 1275 v3 's Advantages
Higher base frequency (3.5GHz vs 1.3GHz)
Larger L3 cache size (8MB vs 1.5MB)