Intel Xeon E5 2690 's Advantages
Released 3 years late
Newer PCIe version (3 vs 2)
Larger L3 cache size (20MB vs 8MB)
More modern manufacturing process (32nm vs 45nm)
Xeon X5570 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (2.933GHz vs 2.9GHz)
Lower TDP (95W vs 135W)