Intel Xeon E5 2643 's Advantages
Larger L3 cache size (10MB vs 8MB)
Intel Xeon E 2124G 's Advantages
Released 6 years and 2 months late
Higher specification of memory (DDR4 vs DDR3)
Higher base frequency (3.4GHz vs 3.3GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (72W vs 130W)