4K display


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Would anyone know why a 4K display would always run the Windows desktop at 3840x2160 even when the resolution is set to 1920x1080?  When the graphics driver is set to 1920x1080 the resolution matches that but under the monitor's info screen it says it's still running at 3840x2160.  Even when switching between the resolutions there is no black screen flash while the monitor changes its resolution it just immediately changes between the two.  If I start a game set to 1920x1080 then the monitor blinks and switches to 1920x1080 but never in Windows.  I'm running Windows 10 10049.  Hardware is an AMD R9 270X that shows up as "AMD Radeon R9 200 Series (Engineering Sample - WDDM 2.0)" and the driver version is 15.200.1018.1

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Would anyone know why a 4K display would always run the Windows desktop at 3840x2160 even when the resolution is set to 1920x1080?  When the graphics driver is set to 1920x1080 the resolution matches that but under the monitor's info screen it says it's still running at 3840x2160.  Even when switching between the resolutions there is no black screen flash while the monitor changes its resolution it just immediately changes between the two.  If I start a game set to 1920x1080 then the monitor blinks and switches to 1920x1080 but never in Windows.  I'm running Windows 10 10049.  Hardware is an AMD R9 270X that shows up as "AMD Radeon R9 200 Series (Engineering Sample - WDDM 2.0)" and the driver version is 15.200.1018.1

 

Can I ask why you would want to run a 4k monitor @ 1080 especially in windows?

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It's because there are "that many pixels" in the panel. The monitor simply upscales the 1080p content, just like a TV would.

 

Also, congrats on the engineering sample. Now overclock that chip! :)

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Can I ask why you would want to run a 4k monitor @ 1080 especially in windows?

Well, I don't  This started because I checked the monitor's info screen an noticed I was running 4K at 30Hz.  This monitor supports 60Hz over Displayport or dual HDMI.  So I switched it to 1080p to check.  That's when I noticed it and I thought it was odd...  Checked a game and the game does switch the monitor to 1080p 60Hz.  All other monitors I've seen (although this is the first 4K I play with) switch the monitor to the resolution set by Windows.

 

It's because there are "that many pixels" in the panel. The monitor simply upscales the 1080p content, just like a TV would.

 

Also, congrats on the engineering sample. Now overclock that chip! :)

An engineering sample I bought at Best Buy?  :huh:  :s

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Yeah as mentioned the monitor will accept the incoming resolution and just double it for the 4K. Generally all 4K tvs bring up the source content to native resolution.

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An engineering sample I bought at Best Buy?  :huh:  :s

 

Yep. Unless someone has used the term wrongfully, you've received a near pristine GPU (alternatively a very early sample, but that's less likely). Usually only reviewers, labs and enthusiasts get their hands on those.

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Yep. Unless someone has used the term wrongfully, you've received a near pristine GPU (alternatively a very early sample, but that's less likely). Usually only reviewers, labs and enthusiasts get their hands on those.

Fairly sure this is labeled that way in Windows 10 as it is a beta driver.  The card is likely a normal card...

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Yep. Unless someone has used the term wrongfully, you've received a near pristine GPU (alternatively a very early sample, but that's less likely). Usually only reviewers, labs and enthusiasts get their hands on those.

Well, I'm just grabbing the info from the graphic card details in Windows...  I thought it had more to do with Windows 10.

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