Intel Xeon E3 1565L v5 's Advantages
Released 1 years and 8 months late
More modern manufacturing process (14nm vs 22nm)
Lower TDP (35W vs 105W)
Intel Xeon E5 2663 v3 's Advantages
Higher specification of memory (2133 vs 2133)
Higher base frequency (2.8GHz vs 2.5GHz)
Larger L3 cache size (25MB vs 8MB)