Intel Xeon E5 2407 's Advantages
Higher base frequency (2.2GHz vs 2GHz)
Larger L3 cache size (10MB vs 1.5MB)
Intel Xeon D 1540 's Advantages
Released 2 years and 10 months late
Higher specification of memory (DDR3 vs DDR3)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (45W vs 80W)