Opteron 6344 's Advantages
Higher base frequency (2.6GHz vs 2.5GHz)
Lower TDP (115W vs 335W)
Xeon w7 3565X 's Advantages
Released 11 years and 9 months late
Higher specification of memory (4800 vs 1866)
Newer PCIe version (5 vs 2)
Larger L3 cache size (82.5MB vs 8MB)
More modern manufacturing process (10nm vs 32nm)