Ultra HD on 1080p monitor??

[jayhayjay]

Is it possible for a 1080p full HD (1920 x 1080) monitor that supports DisplayPort 1.2 to view Ultra HD resolutions such as 1440p or 2160p (4K)? Since DP 1.2 is able to reproduce 4K resolutions of 120HZ or more, I've always believed that instead of buying an Ultra HD monitor, you could instead buy a 1080p monitor and change its resolution to 2160p through DisplayPort, using either Personalization options or NVIDIA's GeForceEX dynamic resolution. Is this even possible???

I'm using Windows 10 Home 64-bit.

 

[CBender]

Nope. The resolution is depended on your monitor's panel. Meaning it is a physical quality of the monitor. You can scale down because the pixels are already there, bt you cant scale up.

What you can do though is to use what is called super-resolution. By changing the resolution as you said, some content (like gaming) is displayed a bit better. The resolution would still 1920x1080 but because the rendering happens in a larger than that resolution when it is scaled to 1080p it is a bit crispier. Of course it is not comparable with the true 4k resolution.

 

[basroil]

Is it possible for a 1080p full HD (1920 x 1080) monitor that supports DisplayPort 1.2 to view Ultra HD resolutions such as 1440p or 2160p (4K)? Since DP 1.2 is able to reproduce 4K resolutions of 120HZ or more, I've always believed that instead of buying an Ultra HD monitor, you could instead buy a 1080p monitor and change its resolution to 2160p through DisplayPort, using either Personalization options or NVIDIA's GeForceEX dynamic resolution. Is this even possible???

I'm using Windows 10 Home 64-bit.

Sounds like you don't understand what a resolution is. If your monitor is 1080p, it has 1920x1080 independent pixels, and it will never display more than that. Forcing 4K output will do nothing extra except make things blurry and impossible to read, but there are no monitors that support it so no reason to even consider it.

Now, if you mean you want to output a 1080p image to a monitor but force GAME (and only game) rendering to a 4K target to supersample everything (think of it like MSAA on steroids), nvidia already supports that on kepler and maxwell cards (dynamic resolution). Nothing else will actually benefit from it, and in fact will look worse (and many games look worse with dynamic resolution too). The actual output however is the monitor resolution, no higher.

 

[Jaster_1]

Both Nvidia (DSR) and AMD (VSR) driver packages contain downscaling options for 1080p screens. Should work over display port as its still in essence a 1080p image just downscaled from 2k/4k.

 

[beegmouse]

It cannot display 4K, it doesn't have the pixels.

But what you are describing is supersampling.

Some games support it. The game renders at a higher resolution than the native display, The GPU Downscales and sends the monitor a 1080p image. It is better than Antialiasing at removing jaggies without messing with transparencies.

 

[jayhayjay]

Thank you all for the informative answers. Learnt what I wanted.