Will a 1080p be the same as 1440p if screen size on 1080p is reduced?

[Junwei]

I am just curious if lets say i have both 27inch 1080P and 1440P monitor. One will have around 2million pixels and another will have around 3.4million pixels. If i change the screen resolution(size) of the 1080P such that it contain black frame reducing the screen resolution to half (half with black frame,the rest half contain pixels). Now will i have 2million pixels on 13.5inch on the 1080p and only 3.4/2= 1.7million pixels on half of the 1440p monitor?

PS. Sorry if i did not make myself clear. Here is a picture for better understanding
 

[Sauron]

No, modern screens have fixed pixels and cannot be "set" to have more. If you only output to half the screen you'll get a 960x1080 image.

[Glenwing]

Pixels don't move around when you change the resolution. If you have half the screen black, you would just be using half of the pixels.

[Junwei]

Alright got it! Thanks for the replies!

[Froody129]

I think he means the Nvidia setting where you display a native image at a lower resolution, but only on a part of the screen. So it would be the same PPI but smaller

[EPPHO]

It's possible if PPI is same which would be possible if you use smaller screen with 1080p and larger with 1440p res

[Junwei]

Because i changed the resolution on nvidia control panel such that all the side is black frame. Wondering if the smaller resolution pic will be sharper

[Glenwing]

18 minutes ago, Junwei said:

Because i changed the resolution on nvidia control panel such that all the side is black frame. Wondering if the smaller resolution pic will be sharper

No, it won't. 

[Junwei]

1 hour ago, Glenwing said:

No, it won't. 

Okay thank you !