Intel Xeon E5 2658 's Advantages
Larger L3 cache size (20MB vs 1.5MB)
Intel Xeon D 1518 's Advantages
Released 3 years late
Higher specification of memory (4 vs 3)
Higher base frequency (2.2GHz vs 2.1GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (35W vs 95W)