How accurate are the power analysis results?
A. The accuracy of power estimation depends on the stage of the design. For a partially completed design or in the concept phase, use the PowerPlay early power estimator to obtain an initial power estimate. For designs that are completed, simulation-based power estimation generated from the PowerPlay power analyzer provides an accurate power estimation compared to early power estimates. Altera’s Quartus II PowerPlay 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 Quartus II PowerPlay power analyzer estimates, assuming perfect toggle-rate entry.
A. The accuracy of power estimation depends on the stage of the design. For a partially completed design or in the concept phase, use the PowerPlay EPE to obtain an initial power estimate. For designs that are completed, simulation-based power estimation generated from the PowerPlay power analyzer provides an accurate power estimation compared to early power estimates. Altera’s Quartus II PowerPlay 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 Quartus II PowerPlay power analyzer estimates, assuming perfect toggle-rate entry.
