# Resolution and scaling: the workspace you really get

> Resolution counts pixels. What you work in is something else: the space left once the system has enlarged the interface to a legible size. Between the two stands a setting that few buyers consider, scaling.

Source: https://monitorselector.com/us/resolution-and-scaling/ (Monitor Selector, 2026-11-14)

## In short

- Scaling trades workspace for sharpness: a 27-inch 4K screen at 150% shows what a 1440p screen shows, drawn with 2.25 times more pixels.
- The natural scaling follows density: 100% around 110 PPI, 150% around 163 PPI, 200% around 220 PPI.
- macOS is sharp at 1x and 2x only: it suits densities near 110 or 220 PPI, less well those in between.
- Every pixel has to be computed: 4K is 2.25 times the load of 1440p for a graphics card.

## The names and what they count

A resolution is a number of columns and rows of pixels. Marketing has given the common ones names that are worth decoding once.

| Name | Pixels | Total | Compared with Full HD |
| --- | --- | --- | --- |
| Full HD, 1080p | 1920 × 1080 | 2.1 million | 1× |
| QHD, 1440p | 2560 × 1440 | 3.7 million | 1.8× |
| UWQHD (21:9) | 3440 × 1440 | 5.0 million | 2.4× |
| 4K UHD, 2160p | 3840 × 2160 | 8.3 million | 4× |
| 5K | 5120 × 2880 | 14.7 million | 7.1× |
| 6K | 6016 × 3384 | 20.4 million | 9.8× |

“2K” is used loosely for 1440p, although the term designates a cinema format close to 1080p; avoid it. “4K” for monitors always means UHD, 3840 pixels wide, slightly less than the 4096 of cinema 4K.

The progression is steeper than the names suggest. From 1440p to 4K the number of pixels is multiplied by 2.25, and each of them must be computed by the graphics card and transported by the cable.

## What scaling does

Interfaces are designed for a reference density of roughly 96 to 110 PPI. On such a screen a menu letter is about 2.5 mm high, and one “point” of the interface is one pixel. On a denser panel the same drawing, pixel for pixel, shrinks: at 163 PPI everything would be a third smaller, too small to read at desk distance.

Scaling corrects this. At 150% the system draws each element one and a half times larger in pixels: the letter recovers its 2.5 mm, but it is now built from more than twice as many pixels. Nothing is “zoomed” in the photographic sense; text and vector icons are redrawn at the higher definition.

***Fig. 1.** The same 27-inch 4K panel at three scaling settings. The pixels do not change: scaling trades workspace for larger, sharper drawing.*

The consequence is the rule that settles most hesitations between two resolutions:

workspace = resolution ÷ scaling

A 4K screen at 150% offers 3840 ÷ 1.5 = 2560 by 1440 units of workspace: exactly what a 1440p screen offers at 100%. Same windows, same number of spreadsheet columns, same lines of code. The difference is in the rendering, 163 PPI instead of 109. On a given diagonal, a higher resolution therefore buys **sharpness**, not room. Room comes from a larger screen, or from accepting a smaller interface.

**Scaling suited to each density and the workspace it leaves.**

| Format | PPI | Scaling | Workspace | On macOS |
| --- | --- | --- | --- | --- |
| 24″ Full HD | 93 | 100% | 1920 × 1080 | native (1x) |
| 24″ QHD | 123 | 100% | 2560 × 1440 | native (1x) |
| 27″ QHD | 109 | 100% | 2560 × 1440 | native (1x) |
| 27″ 4K UHD | 163 | 150% | 2560 × 1440 | resampled |
| 27″ 5K | 218 | 200% | 2560 × 1440 | sharp (2x) |
| 32″ QHD | 93 | 100% | 2560 × 1440 | native (1x) |
| 32″ 4K UHD | 140 | 125% | 3072 × 1728 | resampled |
| 32″ 6K | 219 | 200% | 3008 × 1692 | sharp (2x) |
| 34″ UWQHD | 110 | 100% | 3440 × 1440 | native (1x) |
| 40″ 5K2K | 140 | 125% | 4096 × 1728 | resampled |

## Windows, macOS, Linux: three ways of scaling

### Windows

Windows scales in steps of 25%, and applications that declare themselves aware of the density draw directly at the requested factor: text is sharp at 125% or 150% as at 200%. The system proposes a value according to the density of the screen, and it is usually right. The weak point is older software that ignores the setting: Windows then enlarges its window as an image, and it looks blurred. This has become rare in common applications; check specialized or in-house tools before choosing a dense screen for a workstation that depends on them.

### macOS

macOS knows two rendering densities, 1x and 2x. For intermediate settings it draws the image at 2x for the workspace you ask for, then resamples it to the panel. On a 27-inch 4K screen set to “looks like 2560 × 1440,” the system draws 5120 × 2880 pixels and reduces them to 3840 × 2160. The result is good, slightly less crisp than a native grid, and it costs graphics performance.

Two densities therefore suit a Mac perfectly: around 110 PPI at 1x (27-inch 1440p, 34-inch UWQHD) and around 220 PPI at 2x (27-inch 5K, 32-inch 6K, the choice Apple makes for its own displays). Between the two, 27-inch 4K at 163 PPI and 32-inch 4K at 140 PPI work resampled: widely used and perfectly acceptable, but not the optimum. And since macOS no longer smooths text at subpixel level, 1x screens look softer than on Windows. The selector takes both effects into account when you choose macOS.

### Linux

Under Wayland, recent versions of GNOME and KDE Plasma handle fractional scaling per screen, with sharp text in applications built on current toolkits. Under X11, fractional factors remain fragile, especially with two screens of different densities. On a Linux workstation, a density that calls for 100% or 200% is the no-surprises choice.

## Choosing a resolution for a given size

From the densities and scalings above, each diagonal has its coherent resolutions.

- **24 inches.** 1080p (93 PPI, 100%) is the classic, a little coarse for text at short distance. 1440p (123 PPI) is much sharper but falls between two scalings: at 100% the interface is small, at 125% the workspace shrinks to 2048 × 1152.

- **27 inches.** 1440p (109 PPI, 100%) is the balanced choice. 4K (163 PPI, 150%) keeps the same workspace with printed-looking text. 1080p (82 PPI) is to be avoided for anything but games on a budget. 5K is the reference on a Mac.

- **32 inches.** 4K (140 PPI, 125%) gives a workspace of 3072 × 1728, larger than 1440p, with clean text: the best compromise of the size. 1440p (93 PPI) has the density of a 24-inch 1080p screen, acceptable at 33.5 in (85 cm), coarse at 26 in (65 cm).

- **34 inches ultrawide.** 3440 × 1440 (110 PPI, 100%) is the standard. 2560 × 1080 (82 PPI) is too coarse for text.

## The cost of pixels

For office work the cost is zero: any integrated graphics chip of recent years drives a 4K screen at 60 Hz. For games it is the main constraint. Rendering load grows roughly with the number of pixels, so a card that reaches 100 frames per second at 1440p falls to about 50 at 4K. That is why 1440p remains the favorite resolution of gamers, and why the selector lowers the score of 4K when you choose gaming. Upscaling techniques (DLSS, FSR, XeSS) soften the rule by rendering fewer pixels than the screen displays.

Pixels must also travel. A 4K image at 144 Hz exceeds what HDMI 2.0 or DisplayPort 1.2 can carry; the chapter on [connections](https://monitorselector.com/us/hdmi-displayport-usb-c/) gives the limits of each link.

## Frequently asked questions

### Does a 4K monitor give more workspace than 1440p?

Not at the same size and the same text size. A 27-inch 4K screen is used at 150% scaling, which leaves a workspace of 2560 × 1440, identical to a 1440p screen. You gain sharpness. You gain room only by reducing the scaling, which makes everything smaller, or by choosing a larger screen.

### Is 1440p or 4K better on a 27-inch monitor?

4K for text, 1440p for games and for tight budgets. Both show the same workspace; 4K renders it at 163 PPI instead of 109. On macOS, 4K or 5K is clearly preferable.

### Why does text look blurry on my 4K screen?

Usually because an application ignores the scaling setting and is enlarged as an image, or because the screen runs at a non-native resolution. Set the display to its native resolution, use the scaling the system recommends, and update or replace the application concerned.