Best answer: Having RGB installed and running inside your PC won’t cause a huge impact on the environment, especially if your electricity comes from renewable sources. The power draw of LED lighting is minimal at most.
The efficient power of Light Emitting Diodes
Lighting has come a long way over recent years. We’ve moved away from traditional incandescent and fluorescent in favor of light-emitting diodes (LED), the same technology used in displays on your phone and PC monitor. This technology has allowed RGB lighting to come into play for PC builders.
Instead of installing fragile glass tubing inside a chassis, all that’s required to create a light show in the office is an RGB controller (usually included on a motherboard or using a dedicated hub) and an RGB fan or LED strip. All of these energy-efficient lights draw barely any additional power through the PSU.
The same goes for RGB fans and hubs that control everything. The amount of additional power being added to your overall draw from the mains outlet is insignificant unless you value each watt coming from your supplier. It’s perfectly fine to have as many RGB LEDs as you desire inside your PC.
Switch to a renewables-only supply tariff
For instance, my supply of electricity comes from UK-based E.ON, which uses 100% renewable energy. Even with a few PCs running through the day for work and plenty of RGB lighting to create a new major airport hub, it’s peace of mind to know that I’m not having a substantial negative impact on the environment by burning more fossil fuel.