Intel Xeon E3 1220L v2 's Advantages
Newer PCIe version (3 vs 2)
Higher base frequency (2.3GHz vs 2.2GHz)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (17W vs 35W)
Opteron 4310 EE 's Advantages
Released 7 months late
Higher specification of memory (1600 vs 3)