Intel Xeon W3530 's Advantages
Higher base frequency (2.8GHz vs 2.6GHz)
Intel Xeon E5 2689 's Advantages
Released 2 years late
Higher specification of memory (1600 vs 3)
Newer PCIe version (3 vs 2)
Larger L3 cache size (20MB vs 8MB)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (115W vs 130W)