Intel Xeon E3 1280 's Advantages
Higher base frequency (3.5GHz vs 2.9GHz)
Larger L3 cache size (8MB vs 6MB)
Intel Xeon E3 1283L v4 's Advantages
Released 4 years and 2 months late
Higher specification of memory (DDR3-1866 vs DDR3)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (47W vs 95W)