Intel Xeon E5 4640 's Advantages
Lower TDP (95W vs 270W)
Intel Xeon Gold 6544Y 's Advantages
Released 11 years and 7 months late
Higher specification of memory (DDR5-5200 vs DDR3)
Newer PCIe version (5 vs 3)
Higher base frequency (3.6GHz vs 2.4GHz)
Larger L3 cache size (45MB vs 20MB)
More modern manufacturing process (10nm vs 32nm)