If I disable the RTX 3090 in device manager, does it still use power?

[Origami Cactus]

So i am in europe, so want to save as much power as possible. The RTX 3090 fluctuates between 30-100w just to show the desktop, which is not very cashmoney.

I have an i5 13500 cpu, and the I-GPU on it is really decent.

So If I connect both my monitors to the Igpu and disable the 3090 in device manager, nothing should be able to use the GPU, meaning it should be in deep sleep right, using far less than 30w right?

 

Games and professional programs still allow me to choose the rtx 3090, even thought it has no direct connection to the monitor 

(windows 11), so that shouldn't be an issue.

[Kilrah]

Yes it will, and might even use more because there won't be a connection to the driver telling it to idle.

You'll need to use a meter plug to check, not much you can assume.

[Origami Cactus]

3 minutes ago, Kilrah said:

Yes it will, and might even use more because there won't be a connection to the driver telling it to idle.

You'll need to use a meter plug to check, not much you can assume.

Okay, I did it, connected both of my monitors to the Intel IGPU, it is even nicer than i thought, both monitors still have adaptive sync, my main monitor is still 4k 144hz, and the RTX 3090 is sitting at a stable 9w of power usage. So I won't disable the RTX 3090 in device manager, as 9w is good enough, and as you say, it can cause different issues, thanks.