Intel Xeon E5 2643 's Advantages
Higher base frequency (3.3GHz vs 2.1GHz)
Larger L3 cache size (10MB vs 8MB)
Intel Xeon E3 1240L v5 's Advantages
Released 3 years and 7 months late
Higher specification of memory (2133 vs 3)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (25W vs 130W)