Intel Xeon E5 2420 's Advantages
Lower TDP (95W vs 125W)
Xeon W 1370P 's Advantages
Released 9 years late
Higher specification of memory (DDR4-3200 vs DDR3)
Higher base frequency (3.6GHz vs 1.9GHz)
Larger L3 cache size (16MB vs 15MB)
More modern manufacturing process (14nm vs 32nm)