Intel Xeon E5 2689 's Advantages
Higher specification of memory (1600 vs 4)
Larger L3 cache size (20MB vs 8MB)
Intel Xeon E 2124G 's Advantages
Released 6 years and 2 months late
Higher base frequency (3.4GHz vs 2.6GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (72W vs 115W)