Why does the FPGA Power and Thermal Calculator underestimate the power consumption of RAM resources when importing a .qptc file?

Due to a problem in FPGA Power and Thermal Calculator (PTC), the power estimation in the RAM tab might not be accurate when ROM mode is being used in the design when importing a .qptc file generated from Quartus® Prime Pro Edition Software version 23.1 and later into the PTC.

For more accurate power estimation,  either refer to power estimation reported in Quartus® Power Analyzer or ensure that the Read Enable % is set accordingly for the ROM instances on the RAM page once the .qptc file is imported.

This problem will be fixed in FPGA Power and Thermal Calculator version 24.1.