Best monitor for a homelab desk: picks by screen job

Give each window a home. A terminal beside the docs, a dashboard you can glance at, and logs that stop disappearing behind everything else: that is the screen upgrade worth buying. Start with 27-inch QHD for a straightforward main display, move to 4K for higher pixel density, or go ultrawide when you want more columns on one screen.

Specs come from the makers, checked November 1, 2026; pixel density and scaling examples are computed below.

Four screen jobs, four picks

Best QHD all-rounder: ASUS ProArt PA278QV. Its 27-inch 2560 × 1440 panel, DisplayPort and HDMI inputs make it the simple main-screen pick for a mini PC or desktop. You also get a stand that adjusts in height and pivots.

Best for 4K docs and USB-C laptops: ASUS ProArt PA279CRV. Choose it for denser text rendering and a USB-C input that carries video, USB data and up to 96W of charging.

Best for side-by-side work: Dell S3425DW. The 34-inch 3440 × 1440 ultrawide gives your reference page, terminal and dashboard more horizontal room without a bezel between them. Its USB-C input supplies up to 65W.

Best vertical side screen: Dell P2425H. This 23.8-inch Full HD model has a pivoting stand, native HDMI and DisplayPort inputs, and enough vertical canvas in portrait for a long log or reference page. Keep it as the sidekick rather than buying a second large main display.

Compare the parts that change the purchase

Screen job / model	Panel and maker maximum refresh	Video inputs	USB-C host charging	VESA / weight without stand	Computed PPI
QHD: ASUS PA278QV	27-inch IPS; 2560 × 1440; 75 Hz	DP 1.2, mini DP, HDMI 1.4, dual-link DVI	None	100 × 100 mm / 4.83 kg	108.8
4K: ASUS PA279CRV	27-inch IPS; 3840 × 2160; 60 Hz	USB-C DP Alt Mode, DP 1.4 input, 2 × HDMI 2.0; separate DP output for daisy chaining	Up to 96W	100 × 100 mm / 4.07 kg	163.2
Ultrawide: Dell S3425DW	34-inch curved VA; 3440 × 1440; 120 Hz	2 × HDMI 2.1, USB-C DP 1.4 Alt Mode	Up to 65W	100 × 100 mm / 6.91 kg	109.7
Portrait: Dell P2425H	23.8-inch IPS; 1920 × 1080; 100 Hz	HDMI 1.4, DP 1.2, VGA	No USB-C host input; its 15W USB-C port is downstream/data-only	100 × 100 mm / about 3.12 kg	92.6

Weights are the makers’ stand-free figures; the P2425H value is converted from Dell’s 6.88 lb panel-only specification. Maximum refresh is the screen’s rating—choose the host, cable, dock and KVM for the resolution and refresh you intend to use. ASUS PA278QV specs · ASUS PA279CRV specs · Dell S3425DW specs · Dell P2425H specs

PA278QV: the everyday lab screen

The PA278QV is the one to choose when you want a useful main display without changing how the computers connect. HDMI works with an HDMI mini PC; DisplayPort gives a desktop or compatible dock a direct path. The included stand handles height, swivel and portrait rotation, so an arm is optional. ASUS panel, port and stand specifications

At its native resolution and 100% scaling, you have a 2560 × 1440 workspace. Make it the centre of a compact desk, put the docs beside the terminal, and leave the hardware experimenting to the machines underneath. Our desk setup guide covers the arm, dock and cable management around it.

PA279CRV: sharper text, tidier laptop connection

The PA279CRV puts more pixels into the same diagonal size. At 150% scaling, its calculated workspace is the same 2560 × 1440 as the QHD pick at 100%, with more physical pixels available to draw text. Choose it for that density, not on the assumption that you will read tiny text at unscaled 4K.

Its USB-C input supports DisplayPort Alt Mode and up to 96W Power Delivery. With a compatible video-capable laptop port, that is the clean one-cable route for video, USB peripherals and charging. The two DisplayPort sockets are an input and a daisy-chain output, not two independent host inputs. ASUS USB-C and I/O diagram

S3425DW: spread out sideways

The Dell S3425DW is for the desk where you keep moving the same three windows around. At native resolution, it has 34.4% more horizontal pixels than the QHD pick and the same 1440-pixel height. Use that width for side-by-side work; choose a 4K screen instead if higher pixel density is the goal.

Dell documents two HDMI inputs and a USB-C video input with 65W PD. There is no full-size DisplayPort socket, so an existing DisplayPort KVM needs a compatible conversion path or a different screen choice. Its stand adjusts height and tilt; use the small Dell below for the portrait job. Dell input, stand and resolution specifications

P2425H: turn the reference page upright

The P2425H makes a useful second screen for logs, a runbook or a chat window beside your main work. Rotate the stand and set the OS orientation to portrait: the assumed 100% workspace becomes 1080 × 1920.

Use HDMI or DisplayPort for its picture. The USB-C socket is a 15W downstream data port, so it is not the video-and-charging laptop input found on the PA279CRV and S3425DW. Dell lists a separate USB-B upstream connection for the USB hub. Dell P2425H ports and pivot stand

PPI and scaling: buy usable space

Pixel density is sqrt(width² + height²) ÷ diagonal inches. For the examples below, workspace dimensions are native pixels divided by the assumed scaling factor. The calculation uses the maker diagonals and resolutions, with PPI rounded half-up to one decimal.

Screen / assumed scale	Calculated workspace equivalent	What to try
PA278QV / 100%	2560 × 1440	A roomy QHD starting point
PA278QV / 125%	2048 × 1152	Larger text and controls
PA279CRV / 150%	2560 × 1440	QHD-sized workspace at higher density
PA279CRV / 200%	1920 × 1080	Bigger controls and fewer windows
S3425DW / 100%	3440 × 1440	More horizontal working space
P2425H portrait / 100%	1080 × 1920	A tall reference column

These are planning examples at assumed scales; choose the text size that is comfortable for you. In Windows, use Settings → System → Display → Scale and keep the panel at its native/recommended resolution. Set Display orientation when you rotate the side screen. Microsoft display scaling and orientation

Match the monitor to the KVM or dock

What you connect	Sensible input path
HDMI mini PCs sharing a screen	An HDMI KVM into any pick’s HDMI input
A DisplayPort desktop or DP KVM	Native DP on PA278QV, PA279CRV or P2425H
A USB-C laptop with video output	PA279CRV USB-C/96W or S3425DW USB-C/65W; match the laptop’s charging requirement
Two computers sharing keyboard and mouse	Choose the switching path in our KVM guide; use the monitor’s inputs for the picture

A dock connects a laptop to the desk; a KVM selects which computer owns the shared peripherals. Keep keyboard and mouse on the KVM’s shared USB ports when that is the job. Our HDMI, DisplayPort and USB-C KVM picks spell out the host connections and cable counts. For a one-laptop dock layout, follow the desk wiring plan.

Arm fit and the first five minutes

All four screens list 100 × 100 mm VESA mounting. Use the weight without the stand, then account for any mounting accessories. The existing Ergotron LX pick has a published 3.2 kg minimum; the bare P2425H is below it. Keep that screen on its pivoting stand or choose an arm rated for its lighter load. Ergotron LX mounting and load specifications

Connect the main screen directly first. Select its input, set the native resolution and your chosen refresh rate, then adjust scaling. Add the dock or KVM once the direct picture works, and test switching between the computers you will use. Leave enough cable slack for arm movement and portrait rotation.

Choose PA278QV for an uncomplicated QHD main screen, PA279CRV for dense text and USB-C charging, S3425DW for width, or P2425H for the vertical sidekick. Build the rest around it in the homelab desk hub.