Intel Xeon E5 2440 's Advantages
Released 2 years and 2 months late
Higher base frequency (2.4GHz vs 2GHz)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (95W vs 105W)
Xeon E6540 's Advantages
Higher specification of memory (1333 vs 3)
Larger L3 cache size (18MB vs 15MB)