Intel Xeon E5 4669 v3 's Advantages
Higher specification of memory (2133 vs 4)
Higher base frequency (2.1GHz vs 1.3GHz)
Larger L3 cache size (45MB vs 1.5MB)
Intel Xeon D 1577 's Advantages
Released 8 months late
More modern manufacturing process (14nm vs 22nm)
Lower TDP (45W vs 135W)