Intel Xeon E3 1220L 's Advantages
Newer PCIe version (3 vs 2)
Higher base frequency (2.2GHz vs 2GHz)
Lower TDP (20W vs 99W)
Opteron 6370P 's Advantages
Released 2 years and 9 months late
Higher specification of memory (1600 vs 3)
Larger L3 cache size (8MB vs 3MB)