What is the difference between LED lamp beads RGB and RGBW?

rgb, red, green and blue, rad green blue. rgbw, red, green and blue + white, white. Red, green and blue can be mixed with different proportions, but some specific whites may not be so positive. For example, there are specific requirements that white must be 4000k, 4500k, 6000k. So I added a white color. The difference is not easy to tell with the naked eye. Pay attention to the chips. Rgb generally has three chips, and rgbw generally has four chips. But this method of judgment cannot be generalized. Some lamps cannot be used with frosted surfaces, and the chip cannot be seen. It can be observed by controlling the lighting, which is the safest way.

rgb means red, green and blue, rgbw means red, green, blue and white. The difference is that rgb has sometimes mixed colors that are not pure, while rgbw, white light can do various color temperatures