Xeon E7 8837 's Advantages
Higher specification of memory (1333 vs 4)
Higher base frequency (2.667GHz vs 2.5GHz)
Larger L3 cache size (24MB vs 8MB)
Intel Xeon E3 1265L v3 's Advantages
Released 2 years and 2 months late
More modern manufacturing process (22nm vs 32nm)
Lower TDP (45W vs 130W)