Xeon E 2488 's Advantages
Released 8 years and 6 months late
Higher specification of memory (4800 vs 1866)
Newer PCIe version (5 vs 3)
Higher base frequency (3.2GHz vs 1.9GHz)
More modern manufacturing process (10nm vs 22nm)
Lower TDP (95W vs 105W)
Intel Xeon E5 4640 v3 's Advantages
Larger L3 cache size (30MB vs 24MB)