Opteron 13QS HE 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (2.4GHz vs 2GHz)
Intel Xeon L5638 's Advantages
Released 11 months late
Larger L3 cache size (12MB vs 6MB)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (60W vs 71W)