Intel Xeon E5620 's Advantages
Higher base frequency (2.4GHz vs 2.1GHz)
Intel Xeon W 11955M 's Advantages
Released 11 years and 2 months late
Higher specification of memory (DDR4-3200 vs DDR3)
Newer PCIe version (4 vs 2)
Larger L3 cache size (24MB vs 12MB)
More modern manufacturing process (10nm vs 32nm)
Lower TDP (35W vs 80W)