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Windows 7: Does a Video Card Still 'Run' when Computer is Locked?

06 Aug 2016   #1
TDKMate

Win 7 Pro 64 SP1
 
 
Does a Video Card Still 'Run' when Computer is Locked?

I'm thinking of heat generation here. Say I'm going to video record something with a capture card for later viewing and won't be using the computer for hours. If I lock the computer and turn off the monitor, is the system smart enough to know that nothing is being displayed on screen and therefor deactivate the 'work' the video card does to send data to the screen (thus reducing heat generated)?
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My System SpecsSystem Spec
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06 Aug 2016   #2
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot
 
 

Yes, and no.

If you put the system to sleep, then it definitely will go into a sleeping, zero power mode.

Just locking the computer and turning off the monitor will leave the GPU running, until it reaches the point in the power plan where it has been specified to turn the screen off. Then the GPU will go into low power idle mode. So if you lock the computer and turn off the monitor, it may take 15 to 30 minutes (or whatever you have it set to) to turn off the GPU output. Just because the monitor is off, doesn't mean that the GPU isn't working.

If you want your GPU to rest while you're away from the PC, put the computer into sleep.
My System SpecsSystem Spec
06 Aug 2016   #3
TDKMate

Win 7 Pro 64 SP1
 
 

Thanks Mellon Head. Yes, I have the Power Options set to turn off the Monitor in 15 minutes, so I should be good then.
My System SpecsSystem Spec
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 Does a Video Card Still 'Run' when Computer is Locked?




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