Intel Xeon E5 4640 's Advantages
Lower TDP (95W vs 210W)
Xeon w5 2545 's Advantages
Released 12 years and 3 months late
Higher specification of memory (4800 vs 3)
Newer PCIe version (5 vs 3)
Higher base frequency (3.5GHz vs 2.4GHz)
Larger L3 cache size (30MB vs 20MB)
More modern manufacturing process (10nm vs 32nm)