Intel Xeon E3 1558L v5 's Advantages
Released 2 years late
More modern manufacturing process (14nm vs 22nm)
Intel Xeon E3 1240L v3 's Advantages
Higher specification of memory (DDR3-1600 vs DDR3)
Higher base frequency (2GHz vs 1.9GHz)
Lower TDP (25W vs 45W)