The key difference between RGB LED and Addressable RGB (ARGB) LED lies in their level of customization and control. Here are the main points of distinction:

1. Control: RGB LED typically allows for the adjustment of overall color and brightness across a group of LEDs. However, Addressable RGB LED (ARGB LED) offers independent control of each LED's color and brightness. This means that with ARGB LED, you can achieve more complex and varied lighting effects.

2. Interface: RGB LED often uses a 12V 4-pin interface, while ARGB LED employs a 5V 3-pin interface. This new interface allows for the individual addressing of each LED.

3. Programmability: Due to the individual addressing capability, ARGB LED can be programmed to display different colors and patterns on different LEDs, creating dynamic and unique lighting effects. RGB LED, on the other hand, has a more limited range of customization.

4. Compatibility and Range of Application: RGB LED is more widely compatible and can be found in a variety of devices and applications. ARGB LED, while offering more advanced lighting options, is typically found in higher-end hardware such as gaming components and customized PCs.

5. Cost: Because of the advanced technology and customization options, ARGB LED solutions tend to be more expensive than RGB LED.

In summary, RGB LED provides basic color and brightness adjustment across a group of LEDs, while Addressable RGB LED offers independent control of each LED's color and brightness, enabling more complex and customized lighting effects.