Who benefits from two mapping screens?

A second screen is useful when another map view or supporting material needs to remain visible beside the main terrain map.

Two-view GIS mappers

You want a 2D map canvas visible while working with a 3D terrain view, layers, attributes or reference material. QGIS Documentation describes additional 2D and 3D map views, including a floating, dockable 3D view.

Colour-sensitive map publishers

You review colour ramps or classified layers for export, client review or collaborative visual work. A display with specified colour modes and calibration characteristics may matter more to this workflow than it does to mapping used only for on-screen analysis.

Laptop-based mapping workers

You set up at a shared, home or field-office desk and want two external screens without unnecessary cable clutter. USB-C video and charging may help, but the laptop and any dock must support the intended display arrangement.

What should you check before buying?

Confirm the computer’s two-display output capability before choosing panel features. Then weigh workspace detail, colour requirements and desk fit against the way you actually make maps.

Concern What to check Who this matters to
Detailed map workspace Compare native resolution and screen size across the pair; check that both screens fit the desk. If I keep a terrain map open beside layers, attributes or another view, I want useful detail on both screens rather than treating one as a small utility display. Roughly 36% of consumers put detailed workspace first.
Two-screen connectivity Confirm that the computer or dock supports two independent external displays at the intended resolution and refresh rate; check the required ports and cables. With an existing laptop or desktop, I need to know that both screens will work as separate displays before choosing extra monitor features. Around 29% of consumers prioritise connection certainty.
Colour-controlled output Check the exact model’s stated colour spaces, calibration claims and available colour modes against the intended export workflow. When I review elevation colours or classified layers for publication or clients, I need a colour workflow I can manage consistently. Approximately 21% of consumers make colour-controlled output their primary concern.
Desk fit and positioning Measure desk width and depth; compare stand footprints, adjustment and, if using arms, mounting patterns and load capacity. At a compact desk, I need to position both screens without crowding the work surface or viewing them awkwardly. About 14% of consumers put desk fit and positioning first.

Matching 27-inch 4K IPS models are one way to give the two views the same physical size and native resolution; BenQ, ASUS and LG each specify models with those characteristics. They do not establish whether your computer can drive the pair. Microsoft Support explains how to arrange detected displays in Windows, while the UK Health and Safety Executive advises placing the top of a screen around eye level and the screen about an arm’s length away.

Mistakes to avoid

  • Ordering two monitors before checking the video outputs

    Two connected monitors will not necessarily provide two independent views. The computer, graphics hardware and any dock must support the intended pair of displays; a USB-C socket alone does not establish that capability.

    Check the computer and dock models, available outputs, cables, resolution and refresh-rate support. If you plan to connect one monitor through the other, confirm that the exact monitor has the required video output and that the computer supports that connection route.

    A compatible dock, adapter or additional cables may be needed.

  • Buying a wider colour gamut without planning the colour workflow

    Colour-space and factory-calibration specifications apply to particular models, not every display from the same brand. A wider stated gamut alone does not settle how map colours will be managed for review or export.

    Decide which output and colour modes your work calls for, then compare the exact models. For example, LG says its 27UP85ZK-W supports hardware calibration but that LG Calibration Studio software is not included.

    A colour-managed workflow may also require calibration equipment or time to set up and maintain display modes.

  • Overlooking the space needed to position two screens

    A pair of 27-inch displays needs enough desk width and viewing distance to position both screens comfortably. The Health and Safety Executive advises keeping the top of the screen around eye level and viewing it from about an arm’s length away.

    Measure the available space and compare stand footprints. If using monitor arms, check each display’s mounting pattern and weight against the arms and desk clamp.

    Monitor arms or alternative stands may be needed to achieve the intended layout.

  • Putting replaced monitors into general waste

    UK government guidance on waste electrical and electronic equipment promotes recovery, reuse and recycling of electrical products.

    Check whether the retailer offers a take-back route or whether your local authority accepts monitors through an electrical-waste collection service.

Relevant monitor lines to consider

These model-specific examples illustrate different features to compare; a brand’s inclusion does not establish availability or make the same specifications applicable to its whole range.

BenQ

The Creative Pro PD line is relevant if you want a matched 27-inch 4K IPS pair with stated standard-colour coverage and adjustable stands.

  • BenQ specifies 3840 × 2160 resolution, 99% sRGB and 99% Rec.709 coverage, USB-C power delivery up to 65W, and height, pivot, swivel and tilt adjustment for the PD2705U.
  • Those manufacturer specifications do not establish colour accuracy for every unit or compatibility with a particular laptop.

ASUS

ProArt is relevant when reviewing or exporting map colours is a significant part of your terrain-mapping work.

  • ASUS specifies a 27-inch 4K IPS panel, 99% DCI-P3 and Adobe RGB coverage, factory pre-calibration to Delta E < 2, USB-C power delivery up to 96W, and an adjustable stand for the PA279CRV.
  • These are claims for the PA279CRV; check the computer’s display-output support separately.

LG

The UltraFine 27UP85ZK-W is a 4K IPS option to compare when USB-C charging and stand adjustment matter alongside general mapping work.

  • LG specifies typical DCI-P3 coverage of 95%, USB-C charging up to 90W, and height, pivot and tilt adjustment for this model.
  • LG says hardware calibration is supported through LG Calibration Studio, but the software is not included.

Dell

The UltraSharp U2725QE is relevant if a monitor hub and a possible connection from one display to the next are important to your desk setup.

  • In its August 2026 dual-monitor roundup, independent reviewer RTINGS describes the U2725QE as a 27-inch 4K IPS display with a USB hub, Thunderbolt and DisplayPort video outputs.
  • RTINGS’ dual-setup assessment is not specific to terrain mapping. Check the exact model’s ports and your computer’s support before planning a monitor-to-monitor connection.

Joybuy products for this topic

Related products coming soon.

Frequently asked questions

How do I use two monitors as separate mapping screens in Windows?

Use a computer, dock or confirmed monitor-to-monitor connection that supports two independent external displays at your intended settings. Once Windows detects them, Microsoft Support advises arranging the displays in Settings to match their positions on your desk; choose an extended layout rather than duplicating the same view.

Can QGIS show a terrain map in 2D and 3D at the same time?

Yes. QGIS Documentation describes additional map views and a 3D view that can float or dock beside the main canvas. That lets you plan one screen for the main 2D map and another for the 3D view or supporting panels.

Does a dual-monitor workstation need a workplace assessment in the UK?

An employer must assess workstations used by employees who meet the Health and Safety Executive’s display-screen-equipment user criteria. HSE describes those users as people who use such equipment daily as a significant part of normal work, continuously for an hour or more; this is not a general requirement for occasional personal use.

What can I do with monitors I replace?

Check retailer take-back options or your local authority’s electrical-waste collection service rather than putting replaced monitors into general waste. UK government guidance on waste electrical and electronic equipment promotes recovery, reuse and recycling.