The ideal temperature for a GPU depends on the specific model and manufacturer, but generally, anything under 80°C is considered ideal/good, 80-90°C is okay, and 90+°C requires checking the case/fan setup. According to another source, ideal GPU temperatures range from 65 to 85°C under gaming, although GPUs are made to run at 105°C, so this temperature limit must not be exceeded. Maintaining temperatures below these levels should give you peace of mind that your GPU is operating at its maximum potential. However, its important to note that the ambient temperature of the room and the season can also affect the GPU temperature, so context is needed when considering what is a good temperature.