Compare Asus ROG Swift 34 QD-OLED PG34WCDN vs ASUS ROG Strix OLED XG27ACDNG

The stand's cable cutaway and integrated switching simplify a desk with several connected devices, even if the wide monitor still needs substantial space.

Routing behind the stand is basic, and one hands-on setup found cables hanging visibly when the monitor was raised.

Gray uniformity is strong overall, but mild banding appears in some darker gradients.

The 10-bit panel delivers fine tonal steps and smooth gradients that complement both gaming and creative work.

Refined surfaces, sturdy construction and a slim OLED display section help it look the part of a flagship gaming monitor.

The screen assembly looks and feels sturdy, but opinions split over the more ordinary plastic stand and its fit with the premium ROG aesthetic.

Screen-size emulation is flexible, but a tested 27-inch mode looked softer than expected pending a proposed firmware correction.

Sending it 4K for desktop use produces softer text than native QHD, so the higher accepted input resolution is not a substitute for a native 4K panel.

BlackShield noticeably lessens direct reflections and purple-tinted raised blacks. It cannot fully match the brighter-room black depth of some WOLED alternatives.

The coating keeps some reflections under control but cannot entirely overcome direct light, and stronger illumination can raise black levels.

The new RGB-stripe layout essentially eliminates the pink-green text fringes seen on older QD-OLED monitors, a major benefit for reading and work.

Third-generation QD-OLED reduces colored outlines around letters, but fine text remains less clean than on a conventional LCD and sensitivity varies.

The full 360Hz advantage depends on sufficiently high game frame rates; heavy titles and weaker GPUs cannot always show the benefit.

The 1440p resolution is more achievable at high frame rates than 4K, but taking full advantage of 360Hz still demands fast games and a suitably capable PC.

Standard operation ranges from minimally distracting to noticeable flicker under unstable frame rates. Anti-flicker can help, but sacrifices useful VRR behavior.

Flicker can be visible during fluctuating frame rates in dark games or menus; the mitigation settings may narrow VRR's operating range and cause other compromises.

A 34-inch ultrawide is less cumbersome than jumbo monitors, yet the broad, pronged stand takes room and is not everyone's preferred base.

The 27-inch flat screen balances gaming immersion with a manageable amount of desk space, and its size is praised as practical for QHD pixel density.

Multiple major VRR formats are supported, but the anti-flicker setting narrows the active VRR range and can disable compensation at low frame rates.

FreeSync, G-SYNC Compatible and HDMI VRR give good support across modern hardware, though some settings require care to avoid disabling the feature.

Xbox and PlayStation signals work well, including 4K input downscaling and 120Hz play. Manual 16:9 selection and some ELMB restrictions make it less seamless than on PC.

PS5 and Xbox can take advantage of HDMI 2.1, 120Hz and compatible VRR/HDR modes, though accepted 4K signals are displayed at native 1440p.

Tiny bright elements can reach around 1,300 nits, making neon, explosions and reflections stand out. Larger bright scenes can lose some of that punch.

Small HDR lights pop against true black, while larger highlights can dim or roll off, depending on the mode and content.

Black-frame insertion markedly sharpens motion at 120Hz and 180Hz. Requiring fixed refresh, disabled VRR and multiple setting changes reduces convenience.

Its OLED black-frame insertion can improve clarity at 120Hz and 180Hz; the loss of brightness, HDR and variable refresh makes it a niche alternative to normal 360Hz operation.

The 3440×1440 ultrawide format provides useful working space and sharp images, especially with RGB stripe. It is not as finely detailed as true 4K or higher-density rivals.

QHD strikes a useful balance between visual detail and the frame rates needed for high-refresh gaming, but it cannot match native 4K sharpness.

The illuminated rear branding and desk projection add attractive flair without being overly intrusive. They favor a distinctly gaming-oriented look.

The illuminated rear logo gives the chassis a distinctive gamer look and offers customizable effects, but it is too subtle to meaningfully light up a wall.

Detailed scenes, immersive 21:9 framing and vivid HDR make cinematic single-player games look superb.

OLED contrast and color make story-driven games striking, but 360Hz is often unnecessary and bright-scene HDR can be less compelling than higher-resolution alternatives.

RGB-stripe subpixels remove the characteristic fuzzy text edges of older QD-OLEDs, giving unexpectedly crisp 1440p-class results.

Games and photos look crisp at QHD, and VividPixel can assist text; native 4K screens remain sharper for desktop fine detail.

ELMB black-frame insertion gives lower-frame-rate games motion clarity approaching the monitor's native 360Hz mode, although it requires a more involved setup.

Black-frame insertion sharpens motion at 120Hz or 180Hz, but the substantial brightness loss and inability to combine it with VRR or HDR limit its appeal.

Shooter, strategy and other presets, plus crosshairs and performance overlays, add flexibility. Differences between some presets are subtle.

Racing mode receives praise for natural balance, while certain stylized presets look exaggerated or poorly calibrated without adjustment.

VESA mounting provides a welcome route to an arm or alternative support instead of using the wide stock stand.

A supplied VESA adapter and standard 100×100mm support make monitor arms and wall mounting straightforward.

Clean text, multitasking width, USB-C charging and KVM switching make occasional work comfortable. Continuous static desktop use is a poor match for OLED longevity.

The KVM, docking-friendly USB-C and strong color make light creative and desktop work feasible, despite the static-content tradeoff.

An integrated camera thread on the stand is genuinely useful for positioning webcam or creator accessories without another clamp.

A top-mounted threaded socket is convenient for placing a compatible microphone, camera or light above the display.

A cluster of USB-A ports plus USB-C and KVM support adds practical peripheral flexibility, with more ports than some rivals.

Three USB-A ports and the upstream connections add useful peripheral access, especially alongside the KVM for a two-computer desk.

The stand is solid with little wobble, though its large pronged footprint does not always provide a clear advantage over smaller bases.

The stand feels solid during adjustments, with smooth travel and little reported looseness or wobble.

High-bandwidth ports, VRR support and a 360Hz ceiling make it well equipped for modern PC gaming, from shooters to graphically demanding single-player titles.

High refresh, flexible video inputs and adaptive-sync support suit powerful PCs particularly well, with access to the monitor's full 360Hz speed.

Screen-wide consistency is generally excellent, with little dirty-screen effect, though faint banding can appear in dark material.

Measured white and dark-field uniformity is impressively consistent, with little visible discoloration across the tested panels.

OLED delivers extremely deep blacks in controlled lighting, and BlackShield reduces the purple cast of older QD-OLEDs. In brighter rooms, blacks can still look gray.

Truly deep blacks are a highlight in dark rooms, but ambient light can turn them grayish or purple on this QD-OLED panel.

Height, tilt and swivel adjustments are smooth and practical, although the stand does not pivot to portrait.

Height, tilt, swivel and full portrait pivot are generous and generally smooth, although one assessment finds the maximum height merely average.

This is widely considered an excellent high-end ultrawide, with stronger text, speed and HDR than previous generations. Pricing and some OLED compromises temper the enthusiasm.

The overall experience is strongly praised for fast, gorgeous gaming and abundant features, with lighting, HDR brightness and value providing the principal caveats.

The newer coating maintains a clear, glossy-looking image while reducing reflected-light problems compared with earlier QD-OLED finishes.

The semi-glossy finish keeps images crisp and colorful without the grain of heavy matte coatings, though it trades off some glare resistance.

Its 90W USB-C supply comfortably exceeds basic charging-only ports and supports many laptops, even though one comparable MSI offers slightly more power.

Up to 90W charging is a meaningful convenience for laptops and portable devices and a welcome addition to a fast gaming monitor.

The 360Hz refresh rate is a substantial jump over older 175Hz and 240Hz ultrawides, with the biggest payoff in games that can actually reach high fps.

The native 360Hz panel delivers wonderfully fluid motion, especially over 240fps; that advantage shrinks in slower games or on consoles.

DisplayPort 2.1, dual HDMI 2.1, USB-C, several USB-A ports and a headphone output form a particularly well-rounded connection set.

Two HDMI 2.1 ports, DisplayPort, USB-C and multiple USB connections form a flexible setup for PCs, consoles and peripherals.

Exceptionally broad DCI-P3 coverage and vivid QD-OLED color volume give games and HDR media rich, saturated tones.

The broad QD-OLED gamut produces exceptionally vivid reds and rich colors, with sRGB clamping available when restraint matters more than saturation.

Per-pixel light control keeps bright objects from sprouting distracting halos, a significant OLED advantage over zone-dimmed LCDs.

Pixel-level OLED illumination keeps bright objects crisp against dark surroundings, without the glowing halos common to some backlit LCDs.

Pixel care, screen shifting, proximity-based shutoff and related settings help limit prolonged static exposure. They reduce risk rather than eliminate OLED burn-in.

ASUS supplies extensive pixel cleaning, shifting and static-logo controls plus burn-in warranty coverage, but none removes the inherent risk of permanent marks.

Instantaneous-feeling response, negligible input lag and 360Hz updates make this a standout for shooters and esports, assuming the PC can deliver high frame rates.

360Hz operation, near-instant response and low lag are excellent for shooters and esports when the PC can deliver high frame rates.

Near-instant OLED response avoids obvious ghost trails and inverse-overshoot artifacts, including during VRR operation.

Moving objects remain clean and well defined, with minimal smearing or overshoot even during rapid action.

Exceptionally low processing delay makes even fast shooters feel immediate and reactive.

Controls feel immediate, with measured low processing delay that makes the monitor highly responsive in fast games.

Smooth 360Hz updates and very fast OLED pixels make moving targets and camera pans extremely clean; lower frame rates show less benefit.

Fast transitions and 360Hz make moving detail look unusually sharp and stable, with little visible smearing.

The latest QD-OLED generation combines OLED's near-instant motion and deep blacks with improved text rendering and higher brightness.

QD-OLED's self-emissive contrast, vivid color and responsiveness are central to the appeal, though brighter rooms can expose its characteristic raised blacks.

Near-instant OLED transitions keep motion crisp and reduce smearing without distracting overshoot.

Near-instant OLED transitions keep action crisp with exceptionally low blur and very little meaningful pixel-response delay.

Colors and brightness stay consistent from off-center positions, a familiar advantage of OLED technology.

Colors and contrast hold up impressively from off-center positions, giving a forgiving viewing sweet spot.

Picture-in-picture and side-by-side source modes are convenient when keeping two connected systems visible at once.

Viewing more than one source is useful, though some accounts distinguish between available picture-in-picture and missing side-by-side options.

Shadow Boost can make darker SDR game areas easier to inspect, but its strongest dynamic setting also alters midtones noticeably.

Adjustable Shadow Boost can expose dark gameplay details without excessively washing out highlights.

The new panel produces brighter SDR images and impressive HDR highlights, with peaks near 1,300 nits in small areas. Large bright regions remain more restrained.

It stands out among several QD-OLED competitors in SDR and can deliver striking small HDR peaks, but broad bright HDR scenes remain comparatively dim.

Higher SDR brightness can fluctuate as white areas grow, while Uniform Brightness holds a steadier but lower level. HDR peak modes can also dim substantially in brighter scenes.

Uniform Brightness can tame distracting changes as windows or bright scenes change, though it reduces peak output. Several tests find the default behavior less intrusive than on rival QD-OLEDs.

HDR is a major strength thanks to pixel-level contrast and improved peak output. No single mode combines full accuracy, peak intensity and freedom from dimming.

Deep blacks and vivid QD-OLED color create dramatic HDR images, particularly in dark scenes; bright full-screen scenes and some tone-mapping choices are less convincing.

FreeSync and G-Sync compatibility help keep fast games smooth, with generally clean response even under changing frame rates. The dedicated anti-flicker mode brings its own limitations.

Adaptive sync generally keeps games tear-free and responsive, although fluctuating frame rates can introduce OLED flicker and mitigation tradeoffs.

The integrated KVM lets one keyboard and mouse follow a change between connected computers, avoiding extra desktop switching hardware.

The integrated KVM is a practical benefit for using one keyboard and mouse with a desktop and laptop, even if initial configuration is needed.

Clear menu organization and a responsive joystick earn praise; DisplayWidget is often quicker for complex settings.

The joystick-based menus offer lots of control and are generally easy to navigate; desktop software adds a more convenient alternative.

Vibrant colors, rich contrast, crisp text and clear motion produce a consistently striking image across work and games.

Its combination of deep blacks, bright accents and vivid color makes both SDR and HDR images exceptionally appealing.

Dedicated sRGB and wide-gamut modes can be exceptionally accurate, and calibration results are excellent. Default oversaturation and inconsistent gamma in some modes call for attention.

Some tests find near-reference accuracy without calibration, while others recommend tuning specific modes for the best sRGB or HDR results.

Perfect-pixel OLED blacks alongside bright highlights create exceptional depth, especially in dark scenes.

Pixel-level light control delivers exceptionally strong dark-scene contrast and convincing image depth without LCD-style backlight halos.

Unlike zoned LCD backlights, individual OLED pixels can turn fully off next to bright pixels, avoiding halos.

Individual OLED pixels eliminate the zone-transition and halo artifacts associated with conventional local-dimming backlights.

Blue-light modes are available, but certain settings conflict with Uniform Brightness and the strongest filter restricts brightness.

Flicker-free and low-blue-light options offer flexibility, while OLED anti-flicker settings can help some situations at the expense of VRR behavior.

At 34 inches, the display adds horizontal room for games and windows without approaching the bulk of 39- or 49-inch models.

The 27-inch format is comfortable for normal desk gaming, though some users want a larger, higher-resolution option.

Solid construction, a refined finish and a sturdy stand help it feel premium. The angular gaming presentation may be more divisive than the physical quality.

The screen housing and mechanical parts generally feel solid; some find the stand's plastic finish less premium than similarly priced rivals.

Aggressive ROG styling, sharp angles and RGB flourishes look striking to some but overly gamer-focused to others.

A futuristic ROG rear shell and customizable lighting look distinctive, while the comparatively plain plastic stand divides opinion.

Performance and features are compelling, but the asking price is steep compared with capable 240Hz and 280Hz alternatives. The premium is easiest to justify for speed enthusiasts.

Feature-rich 360Hz OLED performance is appealing at a discount, while full-price comparisons with cheaper 240Hz panels and newer OLEDs require care.

A three-year warranty explicitly covering burn-in adds reassurance, although it cannot rule out wear after coverage ends.

A three-year burn-in-inclusive warranty offers reassurance, but actual coverage and conditions depend on the buyer's region.

The HDMI 2.1 connections support demanding inputs and console gaming, though 360Hz over HDMI uses DSC.

Full-bandwidth HDMI 2.1 connections are a genuine advantage for modern consoles and PCs, adding flexibility over some competing OLED monitors.

Several measurements found gamma behavior outside the intended target, sometimes darkening or overbrightening content. Careful preset selection or calibration helps.

Some measurements show impressively accurate gamma in the right preset, while others find noticeable errors in several alternative modes.

ASUS Display Center provides mouse-based access to a wider range of display settings, though its experimental voice features were unreliable in one test.

DisplayWidget offers a convenient desktop interface for settings and shortcuts, making frequent picture adjustments easier than joystick-only navigation.

Adjustable sRGB and DCI-P3 options, six-axis saturation and software tools provide strong control. An Adobe RGB preset is missed, and one sRGB mode locks certain settings.

Extensive gamut, gamma, color-temperature and saturation adjustments make the image highly configurable; the best presets differ according to the task.

True Black 500 tracks the target curve more accurately but limits highlights. Brighter modes can overbrighten or dim scenes and sacrifice tonal detail.

True Black mode can track its target well, but higher-peak modes trade accuracy and brightness behavior, with occasional clipping or dimming complaints.

The OSD is generally intuitive and DisplayWidget makes adjustments easier, although reaching rear ports and enabling ELMB can be cumbersome.

Display Center can recognize games and automatically switch to appropriate picture presets; switching between strategy and shooter titles worked as intended.

The 21:9 view opens up peripheral game scenery and more desktop space. Alternative aspect ratios can help focus competitive play, but consoles require manual switching.

The self-emissive OLED screen avoids the backlight bleed associated with many LCDs.

Audio must come from external speakers or headphones. One owner does not mind the omission, but anyone wanting monitor audio will need another device.

The moderate 1800R curve is widely appreciated as immersive without the more aggressive wrap of earlier designs.

PC connections are broad, and supported PlayStation and Xbox signal formats work through the available inputs. Consoles still need aspect-ratio adjustment.

Automatic updates through DisplayWidget are useful, particularly for a monitor whose early firmware has drawn feature requests.

There is a substantial collection of crosshairs, frame counters, shadow enhancements and custom controls, with more tuning options than several competitors.

Multiple HDR modes make it possible to prioritize peak highlights or a steadier image, but none is ideal for every brightness level.

The updated panel material offers added brightness without a stated increase in heat generation, an encouraging efficiency improvement.

Static logos, taskbars and other fixed elements still present a risk of image retention or eventual burn-in, despite the monitor’s protective routines.

The package is generous, with multiple video and USB cables, cleaning supplies and a mounting adapter that make first setup easier.

A standard power cable connects directly to the monitor, avoiding a separate external power brick and making cable replacement straightforward.

ELMB offers a useful way to increase motion clarity when running below 360fps, but is incompatible with variable refresh and not available at every rate.

Pixel response stays clean across refresh rates without constant overdrive adjustments, making gaming setup simpler.

Molded protection and neat internal packing keep the large display secure during delivery.

Aspect-ratio modes were not remembered independently for different inputs in early testing, forcing manual changes when swapping PC and console.

A phone slot in the stand is surprisingly useful and can accommodate even some large handsets with cases.

Photoshop images appear detailed and richly colored, while calibration and sRGB options help make the display suitable for serious image work.

1440p at 27 inches looks sharp in games and photographs, but text is not as finely defined as on higher-density 4K OLED displays.

The integrated power supply uses a standard, easy-to-replace mains cable rather than a proprietary external adapter.

Presence-triggered shutoff and newer panel material help offset consumption, although running at the very highest refresh rate can raise power use.

Changing certain HDR or flicker controls can unexpectedly exit HDR and require re-enabling it in the game, a frustrating setup quirk.

Fine shadow nuances remain visible alongside bright accents, taking advantage of OLED's pixel-by-pixel light control.

The built-in proximity sensor can black the panel when you leave and bring it back promptly when you return, supporting both convenience and care.

Expansive 21:9 framing meets elite speed, striking contrast and smooth motion; the 34-inch curve feels immersive without overwhelming the desk.

Fingerprints and smudges wipe away more easily than on older QD-OLED coatings, a practical benefit for routine care.

Full-bandwidth DisplayPort 2.1 UHBR20 can run 3440×1440 at 360Hz without DSC, a standout advantage for suitably equipped PCs.

Unusually extensive HDR menus let owners adjust brightness, contrast and color rather than accepting a locked preset; tweaking can alter accuracy.

DisplayWidget software makes OLED care and color adjustments easier than navigating several levels of physical menus.

The experimental voice-controlled settings feature failed to work despite troubleshooting, making it unreliable as a real convenience.

Thin top and side borders make the monitor look tidy and help it sit neatly next to a second display.

The harder coating is an improvement in principle, but scratches were seen on one tested sample, leaving real-world durability uncertain.

Stand parts snap or screw together quickly, and the included mounting adapter eases the move to a monitor arm.