Intel Xeon E3 1225 's Advantages
Higher base frequency (3.1GHz vs 2.2GHz)
Lower TDP (95W vs 135W)
Xeon D 2899NT 's Advantages
Released 12 years and 8 months late
Higher specification of memory (3200 vs 3)
Newer PCIe version (4 vs 3)
Larger L3 cache size (30MB vs 6MB)
More modern manufacturing process (10nm vs 32nm)