The M1 iMac and M4 iMac have some differences in terms of performance and options. The design of the 24-inch iMac remains largely unchanged, with minor alterations.
Both versions have a 23.5-inch 4.5K Retina display, with no significant differences in brightness, color support, and True Tone.
The M4 chip in the iMac is claimed to be 1.7 times faster in CPU performance and 2.1 times faster in GPU, offering improved gaming capabilities.
Overall, the M4 iMac offers enhanced performance compared to the M1 iMac model.