Xeon X5570 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (2.933GHz vs 2.4GHz)
Intel Xeon E3 1260L 's Advantages
Released 2 years and 1 months late
Newer PCIe version (3 vs 2)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (45W vs 95W)