Intel Xeon E5 2420 's Advantages
Lower TDP (95W vs 205W)
Intel Xeon Platinum 8268 's Advantages
Released 6 years and 7 months late
Higher specification of memory (DDR4 vs DDR3)
Higher base frequency (2.9GHz vs 1.9GHz)
Larger L3 cache size (35.75MB vs 15MB)
More modern manufacturing process (14nm vs 32nm)