Intel Xeon E5 4640 's Advantages
Higher base frequency (2.4GHz vs 2.2GHz)
Lower TDP (95W vs 100W)
Intel Xeon E5 2692 v2 's Advantages
Released 1 years and 4 months late
Larger L3 cache size (30MB vs 20MB)
More modern manufacturing process (22nm vs 32nm)