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If I turn my extra monitor off manually will it improve my GPU performance

Kickflapper
By Kickflapper
in Graphics Cards
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If I turn my extra monitor off manually will it improve my GPU performance, or do I need to disable it?

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It doesn't really matter.

As long as the 2nd monitor is just showing the desktop or something that isn't gpu intensive it won't matter.

I would just leave it, or maybe turn it off with the power button to save some electricity but that's it.

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Unless Windows is actually sending the signal to turn the display off, no. The GPU will still render the image and send out the signal.

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the second monitor will pull power from the gpu, you have to tell it not to use the monitor manually because it will still pull power even if you turn it off at the power button

 

my laptop with a 7670M gpu loses about 5% of power when I'm gaming with the second monitor on idle

 

Tomb Raider, when played on normal settings is about 40fps, with the second monitor enabled and 45-50fps when disabled, so for older gpu's it makes sense

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6 minutes ago, samcool55 said:

It doesn't really matter.

As long as the 2nd monitor is just showing the desktop or something that isn't gpu intensive it won't matter.

I would just leave it, or maybe turn it off with the power button to save some electricity but that's it.

thanks kinda figured

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1 minute ago, Ratchetman42 said:

the second monitor will pull power from the gpu, you have to tell it not to use the monitor manually because it will still pull power even if you turn it off at the power button

 

my laptop with a 7670M gpu loses about 5% of power when I'm gaming with the second monitor on idle

 

Tomb Raider, when played on normal settings is about 40fps, with the second monitor enabled and 45-50fps when disabled, so for older gpu's it makes sense

Speaking from the other end of the specturm based upon your post

Using an R9 290 4GB dual screen doesn't even phase the GPU as just the desktop requires so little really for todays hardware.

I do agree though on older hardware it could be an issue depending on screen reso.

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Turning the power off to the display will not change anything, the GPU will send out information for the monitor anyways. If you unplug the monitor from the wall or from your GPU then obviously not though. As long as it's not like a GeForce GT 210 it really won't have a tangible impact

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If you unplug the cable from the GPU to the monitor, then yes. If you simply turn it off, no. This is because the GPU will still send a signal nonetheless. 

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42 minutes ago, Kickflapper said:

If I turn my extra monitor off manually will it improve my GPU performance, or do I need to disable it?

Just truning it off will be fine. Only if you have it on your desktop,

i like trains 🙂

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Depends on your monitor. Some will not return a signal to verify a connection, thus the GPU will assume it isn't there and not output a video signal.

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4 hours ago, XDroidie626 said:

Speaking from the other end of the specturm based upon your post

Using an R9 290 4GB dual screen doesn't even phase the GPU as just the desktop requires so little really for todays hardware.

I do agree though on older hardware it could be an issue depending on screen reso.

Maybe something AMD is better at... I'm using a gtx 970 and just a single YouTube video on the 2nd panel drops Overwatch & Rocket League (max settings @ 1080p) from 144Fps (144hz panel) to mid 70fps.

Closing the window & only showing desktop boosts me to mid 90fps. Disabling the 2nd panel and I'm back to max 144fps.

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5 hours ago, Cereal5 said:

Turning the power off to the display will not change anything, the GPU will send out information for the monitor anyways. If you unplug the monitor from the wall or from your GPU then obviously not though. As long as it's not like a GeForce GT 210 it really won't have a tangible impact

It will have an impact, I have had two 900p displays and a 1080p display with both a 390, and a 970 I was seeing a significant drop with the two 900p monitors connected, this is with the two 900p displays just idling.

 

 

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Gotta disable it. Turning it off won't stop the signal unless you hear the sound that says a device was disconnected, assume it still is. 

 

I I had to start turning mine off. Taking to much resources.  

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