Intel Xeon E5 2689 's Advantages
Higher specification of memory (DDR3-1600 vs DDR3)
Higher base frequency (2.6GHz vs 2.5GHz)
Larger L3 cache size (20MB vs 8MB)
Intel Xeon E3 1265L v2 's Advantages
More modern manufacturing process (22nm vs 32nm)
Lower TDP (45W vs 115W)