Intel Xeon E3 1280 v2 's Advantages
Higher base frequency (3.6GHz vs 3.2GHz)
Lower TDP (69W vs 80W)
Intel Xeon E 2356G 's Advantages
Released 9 years and 4 months late
Higher specification of memory (3200 vs 3)
Newer PCIe version (4 vs 3)
Larger L3 cache size (12MB vs 8MB)
More modern manufacturing process (14nm vs 22nm)