Is B550 better than B450?

AMD B450 vs AMD B550: PCIe Support For the PCIe interface, the newer AMD B550 has a huge advantage over the AMD B450. The AMD B550 features PCIe 4.0, which is twice as fast as the PCIe 3.0 on the AMD B450. PCIe 4.0 allows a data rate of up to 16GT/s compared to just 8GT/s on the AMD B450.