Intel Xeon E3 1280 v5 's Advantages
Released 2 years and 1 months late
Higher specification of memory (4 vs 3)
Higher base frequency (3.7GHz vs 3.5GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (80W vs 130W)
Intel Xeon E5 2643 v2 's Advantages
Larger L3 cache size (15MB vs 8MB)