Intel Xeon L5640 's Advantages
Released 1 years late
Larger L3 cache size (12MB vs 8MB)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (60W vs 95W)
Xeon X5570 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (2.933GHz vs 2.266GHz)