Intel Xeon D 1557 's Advantages
Released 8 months late
More modern manufacturing process (14nm vs 22nm)
Lower TDP (45W vs 135W)
Intel Xeon E5 4667 v3 's Advantages
Higher specification of memory (DDR4-2133 vs DDR3)
Higher base frequency (2GHz vs 1.5GHz)
Larger L3 cache size (40MB vs 1.5MB)