Intel Xeon E5 2640 's Advantages
Lower TDP (95W vs 250W)
Intel Xeon W 3345 's Advantages
Released 9 years and 4 months late
Higher specification of memory (3200 vs 3)
Newer PCIe version (4 vs 3)
Higher base frequency (3GHz vs 2.5GHz)
Larger L3 cache size (36MB vs 15MB)
More modern manufacturing process (10nm vs 32nm)