Xeon E 2456 's Advantages
Released 12 years and 8 months late
Higher specification of memory (4800 vs 1333)
Higher base frequency (3.3GHz vs 2.133GHz)
More modern manufacturing process (10nm vs 32nm)
Lower TDP (80W vs 105W)
Xeon E7 4830 's Advantages
Larger L3 cache size (24MB vs 18MB)