Intel Xeon Platinum 9221 's Advantages
Released 6 years and 11 months late
Higher specification of memory (DDR4-2933 vs DDR3)
Higher base frequency (2.1GHz vs 2GHz)
Larger L3 cache size (71.5MB vs 8MB)
More modern manufacturing process (14nm vs 32nm)
Intel Xeon E3 1125C 's Advantages
Lower TDP (40W vs 250W)