Question about a turned off monitor

jimppi6

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Feb 14, 2013
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Does it lower my gaming fps or put strain on the GPU if I have another 1920x1080 monitor turned off but still plugged in to the graphics card when gaming, as my computer still recognizes it? Or should I always unplug the other monitor when gaming? I don't want any fps loss. My GPU is HD6970. Thanks for your help!
 
Solution
No. I am assuming that all of your game content is showing on the 1 screen that is on. There will be a slow down if the graphics card is creating game content for the 2nd screen, but you just don't see it because you are just turning the screen off. In fact a lot of games won't run across two screens hence 1 will "go black" when you are playing a game.

Just simply having a 2nd screen connected will not slow down your fps. The graphics card must be creating game content for the 2nd screen (aka more pixels) to cause a slow down.

ShadeTreeTech

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Jun 23, 2011
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No. I am assuming that all of your game content is showing on the 1 screen that is on. There will be a slow down if the graphics card is creating game content for the 2nd screen, but you just don't see it because you are just turning the screen off. In fact a lot of games won't run across two screens hence 1 will "go black" when you are playing a game.

Just simply having a 2nd screen connected will not slow down your fps. The graphics card must be creating game content for the 2nd screen (aka more pixels) to cause a slow down.
 
Solution

jimppi6

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Feb 14, 2013
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Okay thanks! But if the second monitor is turned on too and only showing the desktop, does that slow down fps or anything?
 

ShadeTreeTech

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It may have a minor effect on your FPS. What you are asking is no longer a simple "A + B = C" question. Some of these factors are: what is happening on the second screen, what version of windows, how much memory does your video card have, how much memory (video and system) does the program need? This is not a complete list, there are many other factors that will effect this new equation. If the video is "being delivered" by the video card, it doesn't matter if the screen is on or not. Kind of like purchasing Pay-Per-View on cable/satellite, they are going to charge your credit card whether you watched it or not.

If you must know a definitive answer, use FRAPs to do a FPS capture with the second monitor connected, and then again without the second monitor connected. Make sure you do at least 5 runs doing the same thing for each test. Make a save point then run from point A to point B following the same path each time. Then you will have a clear answer to your question, "Does having a second monitor connected to my computer make a noticeable difference in playing <name of your game>?"

To sum it up (pardon the verbose answer), if the second screen is not blank there will be an impact on the system. How much of an impact? I highly doubt that the impact is significant or noticeable.