Intel Xeon E7 8880 v3 's Advantages
Released 5 years and 3 months late
Newer PCIe version (3 vs 2)
Larger L3 cache size (45MB vs 12MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon W3680 's Advantages
Higher specification of memory (DDR3 vs DDR3)
Higher base frequency (3.333GHz vs 2.3GHz)
Lower TDP (130W vs 150W)