The total performance of the HBM solution depends on multiple factors such as the HBM stack operating frequency, frequency of the AXI ports in the user application, HBM address map selection, the HBM stack temperature, etc.
One of the most important factors is how the user application logic accesses the HBM through the AXI ports. System architects must consider how all of these factors interact when evaluating the performance of the HBM memory solution in their design.