Compare ASUS ROG Swift OLED PG27UCDM vs Samsung Odyssey 3D G90XF S27FG900X

Per-pixel dimming allows fine control of bright objects against black backgrounds, avoiding the zone-by-zone compromises of typical LCDs.

The edge-lit approach relies on basic whole-frame dimming rather than precise zones. It can boost overall contrast, but it does not reliably protect highlights and may introduce distracting tonal changes.

Full 80Gbps DisplayPort 2.1 can deliver uncompressed 4K at 240Hz with compatible hardware, bypassing DSC-related limitations. The visible difference from working DSC is usually small.

DisplayPort 1.4 works for conventional connectivity, but the lack of the newer 2.1 standard disappoints at this price. Some would expect more forward-looking ports on such an expensive display.

Pixel-level light control produces outstanding scene depth and contrast, especially in darker rooms. Strong ambient light can diminish that striking effect.

IPS contrast is serviceable, and whole-frame dimming can improve the measured ratio in some scenes. Dark-room depth still trails comparably priced OLED or stronger mini-LED displays.

Fine details, vivid color, and inky blacks combine into outstanding image quality. The picture is most impressive with room lighting under control.

Its sharp, bright 4K IPS image is enjoyable in many settings, but the lens layer and basic dimming can impair clarity or contrast. Picture quality alone is not the reason to pay the 3D premium.

The joystick-controlled on-screen menus are responsive and easy to navigate. They also offer plenty of useful display adjustments.

The joystick-driven menu offers useful controls and generally navigable options, though some adjustments require too many clicks. Software-based controls can make repeated changes easier.

Rich blacks and intense small highlights give HDR games and movies real impact. Large bright scenes and the compromises between HDR modes keep it short of a flawless presentation.

HDR color can be enjoyable, but bright highlights and black depth lack the punch expected from similarly priced OLED or mini-LED monitors. HDR also cannot be enjoyed simultaneously with the proprietary 3D effect.

Shadow Boost makes opponents hiding in dark areas easier to spot without demanding a separate software workaround.

The dark-area brightening aid can make opponents easier to see in shadowy scenes. It is a practical gaming control alongside the monitor's more experimental 3D options.

Factory color is impressively accurate, particularly in the dedicated sRGB mode. Some HDR modes and the default wider gamut require more care for precision.

Factory tuning is frequently a highlight, with natural, accurate color reported without a full calibration process. Some modes fall behind rival gaming monitors, so the chosen picture preset matters.

Brightness works well in typical indoor conditions, especially with the right settings. It cannot sustain the luminance of a bright LCD, and large white areas may look subdued.

Day-to-day SDR brightness can be plentiful, with some strong measured peaks. Other testing found more ordinary output, and the panel does not deliver the dazzling HDR highlights of stronger alternatives.

Broad adaptive-sync support generally keeps frame delivery smooth across different graphics cards. Uneven frame rates can still trigger OLED flicker.

FreeSync and G-Sync compatibility help conventional gaming stay smooth and tear-free. These benefits apply to standard play, not all of the specialized 3D display modes.

Wide viewing angles keep color and contrast consistent well off-center, making the image easy to appreciate from different positions.

The IPS panel is usable head-on but can lose brightness or shift color as the viewer moves off-axis. Stereo viewing is even more dependent on staying within the tracking range.

Dark-room blacks look almost perfectly inky with no gray backlight haze. Direct lighting can make the QD-OLED panel appear grayish or purplish instead.

The IPS panel offers acceptable blacks in ordinary lighting but falls short of OLED depth in a dark room. Some find them decent for LCD, while others notice gray-looking dark scenes.

DisplayPort 2.1, two HDMI 2.1 inputs, USB-C, and a USB hub give this compact display unusually broad connectivity. Its KVM adds everyday utility.

Dual HDMI connections, DisplayPort, and USB provide a workable gaming setup, but the lack of USB-C and DisplayPort 2.1 feels stingy at this price. Some layouts are more accessible than others.

White and dark-gray fields look notably even, with little distracting dirty-screen effect on the tested panel.

Edge darkening and minor blur can draw attention during web browsing or documents, although other testing found good white-field consistency. The effect is less obvious during games.

PS5 and Xbox support reaches 4K at 120Hz, with Dolby Vision providing an extra option on Xbox. Console players cannot use the panel's full 240Hz rate.

Consoles can use the screen as a capable conventional 4K display, but the Windows-based 3D features do not translate to Xbox or PlayStation. The 3D premium therefore goes largely unused in console-focused setups.

The screen itself is a compact 27 inches, yet its deep, three-legged stand occupies a surprising amount of desk. A monitor arm may be worth considering.

The relatively flat base and 27-inch format fit standard desks better than the price and novelty might suggest. There is still a solid stand beneath the panel, but it need not overwhelm the workspace.

The glossy anti-reflective finish can handle ordinary indoor glare well, but direct lamps and windows remain troublesome. Opinions vary with lighting and where the screen sits.

The glossy lens surface can produce sharp-looking color but readily reflects windows and overhead lights. Reflections become particularly frustrating during daytime gaming or when concentrating on the stereo effect.

The overall experience earns enthusiastic praise for a rare mix of 4K sharpness, 240Hz speed, and OLED imagery. Price, stand design, and OLED tradeoffs prevent a blanket recommendation.

The extraordinary 3D effect makes a compelling technology showcase, while the cost and compatibility issues leave the overall purchase divisive. It is easier to admire than to recommend broadly.

There are no integrated speakers. That absence is especially inconvenient when watching shows or using the screen without external audio.

The speakers sound clear and reasonably loud for casual viewing, sometimes outperforming ordinary monitor audio. Their limited bass and less convincing directional effects leave room for external sound systems.

The broad DCI-P3 and Adobe RGB coverage supports rich game color and detailed creative visuals. Wide-gamut material looks especially vibrant.

Colors generally look saturated and appealing, with strong sRGB coverage and useful wide-gamut output. OLED alternatives can still look more vivid, and some testing found limited coverage in certain presets.

Cinematic games look gorgeous thanks to deep blacks, highlights, and fine detail. A larger 32-inch screen can still feel more absorbing for single-player adventures.

Immersive open-world games benefit from detailed 4K visuals and smooth motion. Supported 3D titles can add striking depth, especially when the player is free to slow down and enjoy the scenery.

The built-in USB hub keeps keyboards and mice connected to the display and cuts down on cable runs to a desktop PC.

A USB upstream connection activates additional ports and the tracking hardware. It is a practical convenience, even if a dedicated USB-C laptop connection is absent.

The exceptionally dense 4K panel gives the monitor some of the cleanest-looking text and game detail available in desktop OLEDs. Fine edges look superb.

Standard 4K content can look crisp and highly detailed, especially in games and productivity tasks. The lenticular coating and softer edges sometimes undermine that advantage compared with normal 4K monitors.

Crosshairs, Shadow Boost, and other game tools offer meaningful flexibility, though veteran players may find some automated extras unnecessary.

Genre-oriented modes provide bright, colorful starting points, and an accurate default is usable without extensive tweaking. Differences between presets are modest rather than transformative.

The 240Hz OLED speed, minimal input lag, and compact view make fast shooters highly responsive. It remains a demanding choice for PCs trying to push 4K frames.

Smooth 165 Hz 2D play and quick responses work well for most fast games. Serious esports players can find even faster, more responsive alternatives, and the 3D mode is a poor fit for maximum frame rates.

Input lag is very low, making games feel immediate and responsive. The monitor is particularly attractive for fast competitive play.

Input lag can feel practically imperceptible in regular gaming, and some measurements are comfortable for casual play. Serious competitors may want the lower latency available from esports-focused alternatives.

OLED's consistent fast response eliminates the need to juggle LCD-style overdrive levels across refresh rates.

The factory Faster setting is a sensible compromise between sharp movement and artifacts. Pushing to Extreme cleans up some blur but creates obvious trails behind moving objects.

The solid materials and sturdy construction feel premium, even if the aggressive exterior details are not universally appealing.

The metallic silver styling and substantial stand give the monitor an upscale character. The design feels more finished than the experimental nature of the underlying 3D technology might suggest.

The semi-gloss finish preserves a notably clear and vivid image without the grain of some matte coatings. Bright reflections remain an unavoidable compromise.

The glossy front can make color look rich and avoid a grainy anti-glare texture. Its optical layer may show a faint grid or other artifacts at close range.

Support for major PC and HDMI VRR formats makes the monitor flexible across devices and GPUs. Flicker with sudden frame-rate changes is the main caveat.

Variable refresh support helps keep ordinary games tear-free across capable PCs and consoles. That smoothness is separate from the restricted glasses-free 3D mode.

Rapid motion stays remarkably distinct, with moving objects and fine interface details easier to follow. Clarity remains impressive at lower refresh rates too.

Standard 2D motion is often described as quick and fluid, especially with adaptive sync and a sensible overdrive setting. OLED alternatives provide cleaner fast motion at the premium end.

Fast-moving objects show little to no ghosting or overshoot. This is a major advantage over many LCD gaming monitors.

Motion stays comparatively crisp at sensible overdrive settings, with little blur in demanding test scenes. An extreme overdrive level can create distracting trailing artifacts.

Near-instant OLED transitions keep action crisp from high refresh rates down to slower gameplay. Response performance is a clear strength.

Rapid pixel response keeps conventional movement snappy and reduces visible blur. It performs well for an IPS panel even though leading OLED alternatives can transition faster.

At 240Hz, gameplay is exceptionally smooth without sacrificing 4K sharpness. Reaching that ceiling in demanding games takes a powerful PC.

At 165 Hz, conventional games feel fluid and responsive. The number is respectable but no longer leading-edge for an expensive gaming monitor, and 3D mode has its own limits.

The sturdy stand holds its position with little to no wobble, even during joystick adjustments.

The wide, substantial stand generally holds the panel firmly with little wobble. Its reassuring weight contributes to the premium feel.

Height, tilt, swivel, and portrait rotation offer a wide adjustment range. Most movements are smooth, though tilt can feel stiff.

Height, tilt, and portrait rotation offer practical ways to position the screen. Multiple assessments call the range generous, though swivel flexibility is disputed or absent in more detailed testing.

Running peripherals through the built-in USB hub reduces desk cable clutter and keeps the computer's ports freer.

Rear-facing and outward-facing connections offer mixed convenience, but the stand's cable opening helps keep the desk orderly. The stand opening is not especially large, so several cables may need extra arranging.

Packing 4K into a 27-inch OLED gives games, interface elements, and small text exceptional definition. The extra pixels are especially noticeable next to 1440p OLEDs.

The 4K panel supplies finely detailed imagery for games and ordinary desktop work. The impressive native resolution does not mean each eye sees the full 4K image in stereo mode.

Standard VESA mounting is available and helps free up desk space. ASUS's required adapter bracket adds a small installation step.

Standard mounting support offers an alternative to the included stand. A wall mount or monitor arm can help personalize a desk or clear more working space.

ROG lighting and logo projection lend a bold gamer look, but the large three-legged stand and flashy flourishes divide opinion. Several would trade the styling for a simpler base.

The silver chassis, flat stand, and relatively restrained styling look modern and premium. The extra tracking hardware is incorporated neatly enough that the screen largely resembles a normal gaming monitor.

The 27-inch format brings unusually high pixel density and suits closer desk viewing. Some people still prefer a 32-inch OLED for a roomier canvas or more immersive games.

The 27-inch diagonal is a comfortable middle ground for desktop gaming. It is large enough to appreciate 3D depth without requiring the space of a much bigger display.

Materials and assembly feel solid and high-end, with the sturdy stand and metal details contributing to a premium impression.

The sturdy stand and clean housing create a substantial, polished impression. Even the less elaborate plastic parts generally feel well assembled rather than experimental.

Exceptional performance comes with a high price, and several similar OLEDs are cheaper or larger. The premium is easiest to justify when its particular extras matter.

Glasses-free 3D is exciting, but the high asking price is hard to defend for most shoppers given its narrow compatible catalog. A minority find the uniqueness worth paying for as dedicated early adopters.

The control joystick and logical menus make frequent adjustments quick and intuitive instead of cumbersome.

Side-by-side stereoscopic video is supported and can look impressive, but native frame-sequential 3D Blu-ray playback is missing. This is a meaningful distinction for anyone with a traditional 3D movie collection.

The supported game selection is the monitor's biggest stumbling block. It can make compatible titles spectacular, but the roster has been small and inconsistent enough to make the premium difficult to justify.

Depth and pop-out controls let players tailor the dimensional effect, while remappable shortcuts make adjustments less disruptive. The custom controls are especially welcome when a default shortcut conflicts with game inputs.

Three-dimensional play involves substantial display compromises: HDR and adaptive sync cannot be combined with the effect in the described setups, while 3D refresh or effective resolution may be lower than in 2D.

Stereo rendering divides image information between the eyes, producing some softness, grain, or fringing. The effect nevertheless looks strikingly detailed and natural in its best optimized games.

Tracking permits some head movement without losing the stereo illusion. Sitting too far to the side, moving rapidly, or leaving the viewing range can still compromise the image.

The automatic converter can make compatible videos feel layered and surprisingly immersive. Dark scenes, protected streams, unsupported content, and depth-map artifacts keep it from matching games designed for 3D.

Selectable 4:3 and simulated 24.5-inch views give competitive players more control over their preferred playing field.

The speakers handle basic audio but lack low-end impact. Explosions, music, and cinematic effects benefit from external speakers or headphones.

Individual OLED pixels eliminate the bright halos commonly seen around small highlights and subtitles on zone-lit LCD displays.

The lower light strip adds a restrained splash of color and can follow the image on screen. Its front-facing position makes the effect more visible than typical rear-facing monitor RGB.

OLED Care features include pixel maintenance, logo protection, and a useful proximity sensor. They reduce wear during varied use but cannot make permanent burn-in impossible.

The default image can be accurate enough that calibration is unnecessary. Small gamma or color tweaks are available for anyone who wants to fine-tune further.

Copy-protected streaming is a major barrier to automatic 3D video conversion. Netflix and other protected movies may stay in 2D or produce a blank screen rather than the promised dimensional effect.

ELMB improves perceived motion at 120Hz but halves brightness and disables HDR and VRR. It is helpful in particular games rather than a universal setting.

User-updateable firmware and automatic update support are welcome conveniences for keeping monitor controls current.

The gaming menus offer useful options such as targeting aids, picture modes, input choice, and display tweaks. The selection covers ordinary gaming needs alongside the specialty 3D controls.

Lifelike depth without wearing glasses is the standout accomplishment, producing memorable foreground effects and convincing environments. Alignment hiccups, limited content, and occasional artifacts prevent it from feeling completely mature.

Smooth 3D places heavy demands on the connected PC, often calling for high-end Nvidia graphics and substantial system memory. Less powerful or differently configured machines face restricted features or big frame-rate losses.

Availability of a wired headphone jack is uncertain across the described configurations: some found one, while others could not. Check the exact regional model if a direct headphone connection matters.

A custom heatsink enables effective passive cooling without relying on a fan, supporting a quiet desktop setup.

4K at 27 inches benefits from careful Windows or application scaling; small text and inconsistent software rendering can complicate otherwise crisp desktop use.

A certified high-bandwidth DisplayPort cable is included, but its roughly one-meter length can be restrictive for separated PC and monitor positions.

The integrated power supply eliminates a separate external brick, simplifying cabling and desk placement.

OLED's extremely fast transitions deliver a major clarity advantage over LCD screens at comparable refresh rates, even without strobing.

Cardboard-based packaging avoids polystyrene, an environmentally preferable choice that stands out from typical monitor shipping material.

QD-OLED delivers wonderfully deep blacks, vivid color, and fast pixel transitions. It also retains familiar limitations with ambient lighting and prolonged static content.

A high-end PC can make excellent use of the 4K/240Hz panel's sharpness and low latency. More modest graphics hardware will not always reach the top refresh rate.

Factory-tuned color and 4K detail make occasional photo edits comfortable and precise. It can work as a creative display even if its unusual 3D layer is unnecessary for most editing.

Packing 4K into a 27-inch panel makes individual pixels hard to distinguish in normal 2D viewing. The fine density also helps counter the apparent resolution loss from its 3D optical layer.

The 27-inch size and manageable weight make repositioning it easier than moving a larger display. It still feels solid once placed on its desk stand.

OLED power consumption can exceed a comparable 4K LCD by a wide margin during bright full-screen content, despite modest use in mixed scenes.

High-resolution text, excellent color, USB-C, and KVM make this more useful at work than many gaming displays. Heavy static desktop use remains a less comfortable long-term fit.

A PlayStation can be connected for standard display use, but its games cannot use the Windows-based glasses-free 3D conversion. That makes the costly headline feature unhelpful to a PS5-only setup.

Switching into Dolby Vision triggered repeated display blackouts when opening different programs, prompting a move back to standard HDR.

The proximity sensor can blank the screen when you leave and restore it promptly when you return. That makes daily use simpler while reducing unnecessary OLED exposure.

At this pixel density, the colored fringes associated with older QD-OLED monitors become very hard to notice. A few users may still spot artifacts in certain text or window edges.

The 90W USB-C connection can carry a laptop's picture, data, and power together. Higher-demand laptops may still need their own charger.

The rear ports are reachable when facing the screen, although their orientation can make it easier to turn the monitor around when plugging in cables.

Changing frame rates can cause noticeable flicker, especially in dark games. Anti-flicker settings help in some tests but do not reliably remove the problem.

Head and eye tracking generally keeps the stereo picture anchored as the viewer shifts position. Fast movements can cause a brief loss of alignment, and the system is designed around a single primary viewer.

Default gamma can run slightly above the usual target, giving shadows a deeper look. An available adjustment can bring it closer to standard tracking when precision matters.

Supported games can look terrific, but their 3D effects are not uniformly stable. Certain cutscenes, scanning failures, doubled images, and occasional artifacts can break immersion.

Dolby Vision is a useful extra for compatible Xbox games and video, supplementing HDR10. One user found switching between programs disruptive enough to disable it.

The high-bandwidth HDMI 2.1 ports make modern PCs and consoles easy to connect. They're especially welcome alongside DisplayPort 2.1.

The stand attaches without fuss, and the basic monitor is straightforward to assemble. Enabling glasses-free 3D requires the companion application and additional USB and display configuration.

Three-year burn-in coverage is reassuring where the product's warranty terms confirm it. Coverage details should be checked for the region and SKU, and protection does not eliminate risk.

The extra rendering work can severely cut frame rates, especially in unsupported or demanding titles. Powerful test systems sometimes handled the effect smoothly, but that is far from guaranteed.

Automatic brightness limiting can make desktop windows change luminance as content shifts. Uniform Brightness largely fixes the distraction but caps maximum output.

An integrated KVM lets a keyboard and mouse move between a desktop and laptop without constant cable swapping. It's one of the more practical extras.

Fanless operation keeps the monitor silent, avoiding a distraction found on some actively cooled displays.

Picture-in-picture and picture-by-picture modes are available, but DSC restrictions reduce refresh and color options and require manual re-enabling afterward.

Directional audio adds some presence to 3D scenes but does not convincingly replace strong external speakers or headphones. The perceived surround effect varies considerably across comparisons.

Avoiding a headset or glasses makes extended 3D sessions feel surprisingly natural for many viewers. Others encounter disorientation, eye strain, or distraction, so individual tolerance matters.

Blue-light filtering and generally flicker-free operation help comfort, although some filters cannot be combined with Uniform Brightness mode.

Brightness control avoids PWM flickering in the reported test, which is welcome for sensitive eyes. This does not eliminate the possibility of visual discomfort from the separate stereo 3D effect.

The tracking cameras require an enlarged upper bezel, but they are discreetly incorporated into the frame. The finished monitor still looks reasonably streamlined from the front.

Accurate sRGB modes, gamma options, and HDR controls make fine-tuning flexible. The most accurate preset locks many settings, creating a convenience tradeoff.

In ordinary HDR gaming, tone mapping can render colors and scene brightness convincingly. Dynamic mapping is a useful option for getting more from HDR10 material.

The companion display-control utility makes changing the monitor's regular settings more convenient than working through the rear joystick. It is a helpful option for a desktop setup.

The launcher can discover compatible games and manage depth settings, but its stability and usability vary sharply. Missing titles, disruptive visuals, extra setup steps, and a small catalog make the software feel unfinished to some users.

DisplayWidget Center makes adjusting monitor settings from Windows straightforward. Software and firmware controls add convenience beyond the OSD.