Intel Xeon E5 4640 's Advantages
Larger L3 cache size (20MB vs 12MB)
Lower TDP (95W vs 125W)
Xeon W 1350P 's Advantages
Released 9 years late
Higher specification of memory (3200 vs 3)
Newer PCIe version (4 vs 3)
Higher base frequency (4GHz vs 2.4GHz)
More modern manufacturing process (14nm vs 32nm)