Intel Xeon E5620 's Advantages
Lower TDP (80W vs 125W)
Xeon W 1390P 's Advantages
Released 11 years and 2 months late
Higher specification of memory (3200 vs 3)
Newer PCIe version (4 vs 2)
Higher base frequency (3.5GHz vs 2.4GHz)
Larger L3 cache size (16MB vs 12MB)
More modern manufacturing process (14nm vs 32nm)