Intel Xeon D 1548 's Advantages
Released 5 years and 8 months late
Newer PCIe version (3 vs 2)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (45W vs 80W)
Intel Xeon E5630 's Advantages
Higher specification of memory (DDR3 vs DDR3)
Higher base frequency (2.533GHz vs 2GHz)
Larger L3 cache size (12MB vs 1.5MB)