Intel Xeon E3 1558L v5 's Advantages
Released 11 months late
Higher specification of memory (2133 vs 1866)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (45W vs 115W)
Intel Xeon E7 4809 v3 's Advantages
Higher base frequency (2GHz vs 1.9GHz)
Larger L3 cache size (20MB vs 8MB)