High resolution Output for Blender 2.8 I need some advice for the output settings in Blender 2.8...

When I render an image with 2000px x 2000px the output has the resolution of 72x72.



Now when I render the same image with 3000px x 3000px the output resolution is... still 72x72. When zoomed in the image shows ugly pixels... 



So: Is there a chance / way to have the resolution output at 300x300 (ppcm)? The only solution I came up with is to increase the image size massively... and therefore the rendertimes insanely. 

Let's see if you guys can come up with an answer. Thnx
I think you mean dpi – dots per inch – markets default high resolution print setting.
If you're not printing, only pixel resolution matters, and it's basically the same scenario with a different resolution:

a 3000x3000px image at 72 dpi is 105x105cm.
a 3000x3000px image at 300 dpi is 25x25cm.

A high dpi image not necessarily will be crystal clear when you zoom in. Only the size in pixels count when you're looking at the screen.