Intel Xeon E3 1280 v2 's Advantages
Higher base frequency (3.6GHz vs 3.2GHz)
Intel Xeon W 11855M 's Advantages
Released 9 years late
Higher specification of memory (DDR4-3200 vs DDR3)
Newer PCIe version (4 vs 3)
Larger L3 cache size (18MB vs 8MB)
More modern manufacturing process (10nm vs 22nm)
Lower TDP (35W vs 69W)