Desk / Decision guide
A second screen solves having two things open at once. A bigger screen solves not being able to read the one thing in front of you.
Specifications checked against manufacturer documentation at the time of writing. Sources are listed at the end.
Name which of the two problems you have, then let desk depth and your laptop's video output pick the size.
Our recommendation for most people who spend their day on calls is one 27-inch 1440p screen rather than two of whatever is lying around. A second screen fixes having two things open at once. A bigger screen fixes not being able to read the one thing in front of you. Work out which complaint is yours before you shop.
Listen to how you describe the annoyance. "I keep flipping between the call and the spreadsheet" is a second-screen problem. "I lean in to read the spreadsheet" is a resolution and size problem. They almost never need the same purchase.
A third complaint sounds like both and is neither. If you spend your day dragging windows around, the issue is window management, and both operating systems snap windows to halves and quarters for free.
Try two things first. Turn on display scaling and see whether 125 percent makes your current screen usable. Then run your laptop as a second display for a week, through Sidecar, through a wired tablet, or beside a desktop.
That second test is the honest one. If a laptop panel beside your main screen covers the need, you want a second monitor and you can buy the cheap one. If you still squint, you want pixels, not panels.
Three shapes cover almost every home desk. The numbers below are the panel specifications from each maker, with pixel density and panel height worked out from them.
| Setup | Pixels across | Density at that size | Panel height | What it is actually good at |
|---|---|---|---|---|
| 23.8-inch 1080p | 1920 | about 93 ppi | about 11.7 in | a cheap second screen for chat, notes and inboxes |
| 27-inch 1440p | 2560 | about 109 ppi | about 13.2 in | one main screen for documents and calls |
| 32-inch 4K | 3840 | about 138 ppi | about 15.7 in | smooth text, two full documents side by side |
| 34-inch ultrawide, 3440 x 1440 | 3440 | about 110 ppi | about 13.1 in | a call window beside a document, no bezel between |
Density is the number that decides whether text looks ragged. At a normal desk, your eyes sit somewhere around two feet from the screen, and at that distance roughly 110 pixels per inch is the point where type stops looking chunky without needing scaling turned on.
That is why a 27-inch 1440p panel is the sweet spot and a 32-inch 1440p panel is not. Stretch the same 2560 pixels over 32 inches and you land near 92 ppi, the same coarseness as a cheap 1080p screen, just larger.
Four K at 32 inches reads beautifully, with one catch. Most people run it at 150 percent scaling, and 3840 divided by 1.5 is 2560, so your usable working area comes back to exactly what a 27-inch 1440p screen gives you. You are buying smoother letterforms and more physical size, not more room for windows. That is a fair thing to buy. Just know what you are buying.
Ultrawide is the shape built for your actual day. At 3440 pixels you can give a call window 1720 pixels and a document the other 1720, and each half is wider than half of a 27-inch screen. No bezel runs down the middle of your attention, which matters when the thing on the left is a person's face.
This is the part monitor reviews skip, and it decides how you look to everyone else. Set up correctly, the top of your screen sits at or just below eye level, so a webcam clipped to the top bezel sits above your eyes and looks down at you.
Panel height controls the damage. A 32-inch 16:9 screen is about 15.7 inches tall, roughly two and a half inches taller than a 27-inch one. Raise it to a comfortable reading position and the camera is well above your eye line, which is the angle that makes people look slumped.
The 34-inch ultrawide is the quiet winner here. It is about 13.1 inches tall, slightly shorter than a 27-inch 16:9 panel, so it buys width without pushing your camera up. If you go big and tall instead, plan to mount the webcam lower, or keep the laptop camera and read our webcam or laptop camera guide first.
Using the laptop as the second screen has the same trap in a different place. If the laptop sits off to one side and remains your camera, you spend every call in profile, apparently looking at something else. Keep the camera centred under your main screen, and put the laptop panel on the side only if a webcam is doing the looking.
A thin laptop has a published ceiling on external displays, usually lower than people expect. Check your laptop maker's specification page for the number of external screens and the maximum resolution per screen, with the lid open and with it closed, because those often differ.
Then check the port. A USB-C socket only carries video if it supports DisplayPort Alt Mode, and not every USB-C port does. One cable carrying video plus 90 to 96 watts of charging is the tidiest desk available, which is why the ASUS ProArt PA278CGV and the LG ultrawide here matter more than their spec sheets suggest.
Daisy chaining two screens from one port relies on DisplayPort MST, and support varies by platform. Confirm it against your laptop's documentation rather than the monitor's, because the monitor will advertise a feature your machine may not use.
Count the extras before you decide the budget is set.
The cable is rarely in the box in the form you need. Check whether the monitor ships HDMI, DisplayPort or USB-C, and whether that matches the port you plan to use.
A dock enters the picture the moment you have two USB-C ports and want a screen, a keyboard, a headset and power. Our USB-C dock guide covers what breaks when the dock handles the video.
A VESA 100 by 100 pattern on the back is what lets you add an arm later, and every pick here has one. Choose the arm against the monitor's weight rather than its size, which our best monitor arms and laptop stands list goes into.
Desk depth is the constraint nobody measures. A 32-inch screen wants to sit further back than a 24-inch one, and a desk shallower than about two feet leaves you turning your head.
Monitor speakers are not an audio fix. The 3-watt drivers in the Dell panels here are fine for a notification chime and poor for a meeting, and speakers plus a mic in one room is how echo starts, as our echo guide explains.
Skip both if your day is calls and email. Your laptop already shows one video window and one document at a readable size.
Skip the bigger screen if your complaint is really lighting. A dim, grey face on a 4K panel is still a dim, grey face, and a light for video calls costs a fraction of a monitor.
Skip the ultrawide if you work mostly in one app at a time, because you will pay for width you fill with wallpaper.
Skip the 4K panel if you will run it at 150 percent scaling and own a 27-inch 1440p screen already. You get nicer text and no extra room, which is a real upgrade but a small one.
Our picks assume a laptop as the computer and a desk around two feet deep. They are ordered by what you give up rather than by price.
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27-inch QHD panel with a height, tilt, pivot and swivel stand, HDMI and DisplayPort, and small built-in speakers.
A 27-inch 1440p panel lands near 109 pixels per inch, which is readable at a normal desk distance without scaling. The height and pivot adjustments let you set the top of the screen below your eye line.
32-inch 4K IPS Black panel with Thunderbolt 3, a built-in KVM, and factory colour calibration.
Thunderbolt carries video, data and laptop charging on one cable, and the built-in KVM lets a work laptop and a personal one share the keyboard. The 4K panel at 32 inches is the version of 'bigger' that stays sharp.
34-inch 21:9 WQHD IPS ultrawide with USB-C video and up to 96-watt charging plus a built-in KVM.
At 3440 pixels wide you get a call window and a document side by side with no bezel between them. It is barely taller than a 27-inch screen, so your camera line stays sensible.
23.8-inch 1080p second screen with a full height, tilt, pivot and swivel stand and two 3-watt speakers.
The cheapest useful second screen is a 24-inch 1080p panel with a real height-adjustable stand, parked beside your main screen for chat and notes. You give up pixel density and USB-C.
The Dell S2725DSM is the default because 27 inches at 1440p needs no scaling decisions and its stand adjusts for height, tilt, pivot and swivel, which is what sets your camera line. It has HDMI and DisplayPort 1.4 but no USB-C video, so a USB-C-only laptop needs a dock or an adapter. If you want the single-cable version of the same idea, the ASUS ProArt PA278CGV is a 27-inch 1440p panel with 90-watt USB-C power delivery and a USB hub built in.
The BenQ PD3225U is the step up and is priced like a professional display, so treat it as a considered purchase. Thunderbolt 3 handles video, data and charging together, and the built-in KVM is the feature that pays off if a work laptop and a personal laptop share the desk. If the Thunderbolt and colour work are wasted on you, the ASUS ProArt PA329CRV covers 31.5 inches of 4K with 96-watt USB-C for less.
The LG 34U650A-B is for people whose day is a call on one side and a document on the other. USB-C carries the picture and up to 96 watts of charging, the KVM switches two machines, and the panel stays short enough that a webcam on top is not looking down at you.
The Dell S2425HSM is the budget second screen, and the reason it beats a no-name panel is the stand. Height, tilt, pivot and swivel mean you can set it beside your main screen at a matching height instead of propping it on books. Before you buy it, read raise the camera to eye level, because the cheapest improvement to how you look on a call is not a monitor at all.
Manufacturer documentation and independent testing informed the technical checks. The framework and picks are Clear on Call's editorial recommendation.