Intel Xeon E5 2420 's Advantages
Larger L3 cache size (15MB vs 6MB)
Intel Xeon E3 1285L v4 's Advantages
Released 3 years and 1 months late
Higher specification of memory (1866 vs 3)
Higher base frequency (3.4GHz vs 1.9GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (65W vs 95W)