According to an embodiment of this invention, a print control apparatus which controls a printhead, including a plurality of nozzle arrays each formed from a plurality of nozzles for discharging ink, for executing printing on a print medium by discharging inks of a plurality of colors from the plurality of nozzle arrays executes the following data processing. That is, image data is received from an external apparatus. One of a plurality of ASICs executes at least common data processing for generating print data corresponding to the plurality of colors with respect to the received image data, and another ASIC executes specific data processing related to each of the plurality of colors. Thus, print data to be output to the printhead is generated, and then transmitted to the printhead.