The accuracy of power estimation depends on the stage of the design. For a partially completed design or in the concept phase, use the PTC or EPE (as applicable) to obtain an initial power estimate. For designs that are completed, simulation-based power estimation generated from the power analyzer provides an accurate power estimation compared to early power estimates.
For Intel® Stratix® 10, Agilex and newer, the accuracy of the power model is determined on a per-power-rail basis for the Intel Quartus Prime Power Analyzer.
For most Intel® Stratix® 10 designs, the Intel Quartus Prime Power Analyzer has the following accuracy, assuming final power models: Within 10% of silicon for the majority of power rails with higher power, assuming accurate inputs and toggle rates.
For most Intel Agilex designs, the Intel Quartus Prime Power Analyzer has the following accuracy, assuming final power models: Within 10% of silicon for all power rails, assuming accurate inputs and toggle rates.
For Intel® Arria® 10 and before, the power analyzer tool is accurate (to within ±20%) of actual device power consumption, provided that supplied input vectors are representative of typical design operation. The accuracy of the results of the early power estimator is generally within ±20% of the power analyzer estimates, assuming perfect toggle-rate entry.