AMD EPYC 7261 's Advantages
Released 8 years and 9 months late
Higher specification of memory (2666 vs 1333)
Newer PCIe version (3 vs 2)
Larger L3 cache size (32MB vs 8MB)
More modern manufacturing process (14nm vs 45nm)
Xeon X3440 's Advantages
Higher base frequency (2.533GHz vs 2.5GHz)
Lower TDP (95W vs 170W)