Intel Xeon E3 1558L v5 's Advantages
Released 4 years late
More modern manufacturing process (14nm vs 32nm)
Lower TDP (45W vs 80W)
Intel Xeon E5 2407 's Advantages
Higher specification of memory (DDR3 vs DDR3)
Higher base frequency (2.2GHz vs 1.9GHz)
Larger L3 cache size (10MB vs 8MB)