Intel Xeon E5 2689 's Advantages
Released 3 years and 6 months late
Higher specification of memory (1600 vs 667)
Higher base frequency (2.6GHz vs 2.4GHz)
Larger L3 cache size (20MB vs 12MB)
More modern manufacturing process (32nm vs 45nm)
Xeon X7450 's Advantages
Lower TDP (90W vs 115W)