Intel Xeon E5640 's Advantages
Larger L3 cache size (12MB vs 8MB)
Xeon E 2144G 's Advantages
Released 8 years and 4 months late
Higher specification of memory (2666 vs 3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.6GHz vs 2.666GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (71W vs 80W)