Depends on how you use it. If you pull Apple's trick with retina displays (or an equivalent mode in other OSes) then no, to the user it'll appear the same as a 1920x1080 display, but with crisper text. The point is that pixels are supposed to be invisible, so in the theoretical ideal future, everything would be resolution independent so that decreasing pixel size doesn't make the display unreadable.

It's chicken and egg. The software is set up for bigger pixels, especially on Windows. Higher DPI can mean higher fidelity font rendering in particular. But someone needs to come out with these monitors so that developers can adjust their rendering. MS should possibly even consider pixel-doubling apps, with perhaps some hacks to keep fonts hi-res.

The DPI adjustment in windows has worked since XP, worked well since vista, at least for my purposes, and in 8 its a per monitor setting.

The DPI adjustment doesn't affect everything. For example, from what I've read things like Photoshop don't scale well, as the toolbar buttons remain the same size even if the menu etc. scales up.

Edit: here's some screenshots

https://drive.google.com/folderview?id=0B7re6a9_3U2nOFhZNU1N...

from:

http://www.dpreview.com/forums/post/52771357

Download full resolution and view full-screen on a 24" monitor to approximate the experience.

Don't get me wrong, I think this is an awesome monitor, and my current secondary monitor is on the fritz so I've been researching replacements for the past few days. But even though I have the need, and I can easily afford it, I've not yet made the leap to buy.

In Windows 7 I tried it for a few minutes, but it seemed to screw up scaling in certain controls in most Windows Forms app, which is what our main product was, so I haven't used it since.

Too many Windows applications do drawing while ignoring that settings.

Absolutely.

Still, it has been way too long since there has been any progress in display resolution, so by pushing into "4K" territory it means something like 2560x1440 might just become mainstream.

Win/win: early adopters get the a shiny new 4K display for Christmas, and I get 2560x1440 for less :)

If the applications are designed for the resolution, it would mean a very good PC computing experience where you couldn't discern the pixels at all. I'm pretty excited that this exists, I would even buy one at this price if I was in the states :p.

183 DPI is "too small" for native viewing, but it'll make prettier pictures and more readable text.

I have that very same setup, Dell u2711, and I already find pixels too small. Take hacker news frontpage for instance. Un-freaking-readable.

It's the letters and text you find too small, not the pixels. Turn up your UI scaling.