Opteron 6344 's Advantages
Higher base frequency (2.6GHz vs 2.1GHz)
Xeon W 11955M 's Advantages
Released 8 years and 6 months late
Higher specification of memory (3200 vs 1866)
Newer PCIe version (4 vs 2)
Larger L3 cache size (24MB vs 8MB)
More modern manufacturing process (10nm vs 32nm)
Lower TDP (35W vs 115W)