Intel Xeon E3 1558L v5 's Advantages
Released 1 years and 8 months late
Higher specification of memory (2133 vs 1866)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (45W vs 90W)
Intel Xeon E5 2640 v3 's Advantages
Higher base frequency (2.6GHz vs 1.9GHz)
Larger L3 cache size (20MB vs 8MB)