Intel Xeon E5 4640 's Advantages
Released 3 years and 1 months late
Newer PCIe version (3 vs 2)
Larger L3 cache size (20MB vs 6MB)
More modern manufacturing process (32nm vs 45nm)
Opteron 13QS HE 's Advantages
Higher specification of memory (1333 vs 3)
Lower TDP (71W vs 95W)