Intel Xeon E5640 's Advantages
Lower TDP (80W vs 95W)
Xeon E 2486 's Advantages
Released 13 years and 9 months late
Higher specification of memory (4800 vs 3)
Newer PCIe version (5 vs 2)
Higher base frequency (3.5GHz vs 2.666GHz)
Larger L3 cache size (18MB vs 12MB)
More modern manufacturing process (10nm vs 32nm)