Intel Xeon E3 1220L 's Advantages
Released 2 years and 1 months late
Newer PCIe version (3 vs 2)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (20W vs 95W)
Xeon X5570 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (2.933GHz vs 2.2GHz)
Larger L3 cache size (8MB vs 3MB)