How to disable GPU

Question

is it possible to disable GPU ? Let's say you have one PC (keyboard,mouse and monitor are connected) and you can see everything on your monitor. If you remove keyboard and mouse AND you don't need monitor,you would remove everything from PC, but STILL GPU works (does it ?)

I ask this because I think there is power consumption that I don't need (it's waste), so is it possible to do something like this ?

If it is relevant, I use Linux.

Answer 1

If you don't need a GPU use onboard. Power consumption is very low especially on newer boards that have graphics processing built into the CPU (such as the Intel HD series).

And to answer your question, no. It's a necessary device.