Intel Xeon E3 1280 's Advantages
Higher base frequency (3.5GHz vs 2.3GHz)
Lower TDP (95W vs 140W)
Intel Xeon W 2195 's Advantages
Released 6 years and 4 months late
Higher specification of memory (2666 vs 3)
Larger L3 cache size (24.75MB vs 8MB)
More modern manufacturing process (14nm vs 32nm)