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 130W)
Xeon W5580 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (3.2GHz vs 2.4GHz)