Intel Xeon E5 2658 's Advantages
Higher base frequency (2.1GHz vs 2GHz)
Larger L3 cache size (20MB vs 1.5MB)
Intel Xeon D 1548 's Advantages
Released 3 years and 8 months late
Higher specification of memory (4 vs 3)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (45W vs 95W)