Intel Xeon E5 2676 v3 's Advantages
Higher specification of memory (2133 vs 4)
Higher base frequency (2.4GHz vs 1.5GHz)
Larger L3 cache size (30MB vs 1.5MB)
Intel Xeon D 1557 's Advantages
Released 8 months late
More modern manufacturing process (14nm vs 22nm)
Lower TDP (45W vs 120W)