Xeon X3440 's Advantages
Lower TDP (95W vs 250W)
Xeon w7 2575X 's Advantages
Released 14 years and 11 months late
Higher specification of memory (4800 vs 1333)
Newer PCIe version (5 vs 2)
Higher base frequency (3GHz vs 2.533GHz)
Larger L3 cache size (45MB vs 8MB)
More modern manufacturing process (10nm vs 45nm)