Intel Xeon E3 1558L v5 's Advantages
Released 4 years and 2 months late
Higher specification of memory (2133 vs 3)
Larger L3 cache size (8MB vs 5MB)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (45W vs 80W)
Intel Xeon E5 2637 's Advantages
Higher base frequency (3GHz vs 1.9GHz)