Compare ASUS ROG Swift OLED PG27UCDM vs LG 27GM950B-B

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

The quick-access menus, shortcut buttons and preset modes make switching tasks straightforward after setup. Updating firmware can be much less pleasant.

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

Changing HDR mode preserves the color presentation on tested Mac systems, making everyday switching more convenient.

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.

One tester encountered unusually long blank screens when connecting a GPU, while a deep-sleep option deliberately wakes more slowly to save energy.

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

Two downstream USB-A ports are useful for basic accessories but form a limited hub. More demanding multi-device desks benefit from a proper docking station.

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

The box includes HDMI, DisplayPort and USB-C cables alongside the power supply and stand, reducing the need for immediate extra purchases.

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

Assembly is straightforward, although the crumbly Styrofoam packaging feels less polished than the premium price suggests.

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 low-profile, flat metal base makes the desk easier to use than a sprawling tripod stand. It leaves space for a keyboard, mouse movement, or small items.

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

The external snap-on cable clip is a weak point: it feels inexpensive, has limited capacity, and can leave a USB-C cable hanging near the controls.

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

USB firmware updates are supported and can correct an early sharpness defect. The process may be slow or frustrating when the LG utility fails to recognize the screen.

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

A single fast setting works well at native 165Hz. The QHD/330Hz mode needs different overdrive choices across the refresh range, with some overshoot at lower speeds.

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

Pixel transitions are sound for a modern IPS panel, especially with suitable overdrive. They remain slower than OLEDs and do not fully keep pace with the 330Hz ceiling.

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 matte anti-glare layer generally retains impressive detail without the severe haze of some competitors. A few users dislike its subtle grain and shimmer versus glossy glass.

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

Most testers saw excellent or good uniformity, but others noticed darker edges or vignetting on plain white backgrounds.

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

VESA mounting lets buyers replace the stock stand with an arm without sacrificing a pivot and height-adjustable stand option at purchase.

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.

Its semi-matte surface reduces distracting room reflections without severe blur for most users. Glossy-screen fans may still notice a slightly grainy finish.

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 high-density, dual-refresh design makes a strong impression, but owners disagree about whether its HDR quirks and high price undermine the purchase.

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

Most tests praise exceptionally restrained halos for an IPS Mini LED display. One owner still found obvious bloom around a cursor, while the aggressive dimming can suppress tiny lights.

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

The appearance and image controls can feel distinctly high-end, although plain plastic surfaces and software rough edges undercut that impression for some.

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

Integrated speakers are acceptable for everyday sounds and simple gaming. They are thin or metallic sounding in voices and do not replace proper speakers.

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

On-display AI upscaling can sharpen a lower-resolution console or video feed. Gains on PCs are smaller and sometimes hard to activate, where native game upscalers tend to be better.

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.

Powerful Windows PCs can use the full native 5K/165Hz mode and high-speed QHD option. High GPU demands and some firmware quirks complicate an otherwise versatile setup.

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

Action is smooth and sharp by LCD standards, especially in 330Hz mode. A little trailing blur remains, so top OLEDs are still clearer.

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.

Text clarity and high resolution suit office and creative tasks, but the smaller physical screen and missing advanced docking features hold it back as an all-purpose workstation.

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.

PlayStation testing confirms 4K/120Hz video with HDR and VRR, while lower-resolution console sources can benefit from optional upscaling.

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.

With local dimming enabled, this IPS display can produce remarkably deep blacks. The unassisted panel's native contrast is much weaker, and small highlights sometimes lose brightness.

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

Normal fast-overdrive settings keep inverse trails low, making motion respectable for an IPS panel. More aggressive tuning can introduce overshoot.

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

Power draw is relatively high for a 27-inch LCD, especially during bright gaming. A deep-sleep option can reduce standby consumption at the cost of slower wake-up.

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.

Conventional RGB subpixels and high density make letters unusually clean, with little distracting color fringing for most users. The matte coating draws a few complaints.

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

Switching between 165Hz at native 5K and 330Hz at QHD gives players a real speed-versus-detail choice. The top rate requires compatible hardware and the lower resolution.

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

Input response is very quick in SDR, helping fast games feel connected to controller or mouse movements. HDR backlight processing can add some delay.

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.

DisplayPort 2.1, two HDMI 2.1 inputs and USB-C provide excellent modern video connectivity. Missing KVM and more extensive USB docking are the notable limitations.

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

Height, tilt, swivel and pivot adjustments allow comfortable landscape or portrait placement without buying a separate monitor arm.

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

The low, flat metal base offers good stability and an unobtrusive shape, with only modest wobble reported during use.

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.

The 1440p/330Hz mode and low latency work well for shooters and racing. OLED competitors retain an edge in response speed, and overdrive tuning is less consistent across refresh rates.

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

The display uses active cooling but has not shown worrying external heat levels in hands-on checks.

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.

Tiny text, high-resolution photos and game details look especially crisp at native 5K. QHD dual mode is softer and is best reserved for gaming rather than desktop work.

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

Game profiles, black stabilization, frame counters and shortcut customization give players useful control without a sprawling, confusing menu.

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

The IPS panel holds color and contrast well from off-center positions, with less obvious haloing than many Mini LED alternatives.

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

The exceptionally broad gamut produces rich, vivid HDR colors and appeals to photographers. SDR content needs proper gamut control to avoid oversaturation.

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.

Native 5K detail and vivid HDR can flatter richly rendered campaigns. Some dark scenes are over-dimmed, making OLED alternatives more dependable for cinematic HDR perfectionists.

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 Mini LED panel avoids the characteristic permanent image retention risk of OLED technology, an appealing consideration for desktop-heavy use.

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.

At 27 inches, native 5K makes desktop text and high-resolution photos visibly sharper than 4K. The benefit is less dramatic in many 3D games and comes with a substantial graphics-performance cost.

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

Up to 90W charging makes it convenient to run most compatible laptops from the monitor. Very power-hungry machines may still need a separate power adapter.

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 works across common PC standards and also supports tested 4K/120Hz console gaming, helping prevent tearing.

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

LG Switch offers monitor controls and firmware upgrades, but slow updates, connection detection failures and bloatware worries spoil an otherwise refined interface.

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

There are configurable color profiles and LG Calibration Studio support. Professional accuracy benefits from calibration rather than relying solely on the default modes.

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.

Despite USB connectivity, there is no built-in KVM switch. Anyone sharing a mouse and keyboard between computers needs another solution.

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

One test found that high HDR brightness dropped dramatically after several minutes and did not recover without restarting the display. Another independent tester did not reproduce that behavior, so the experience remains uncertain.

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

The dense Mini LED backlight brings powerful contrast and controlled bloom. Its conservative tuning can obscure tiny light sources, and not all testers observed stable sustained brightness.

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

Mini LED dimming lifts the IPS panel to impressive real-scene contrast, especially in checkerboard and dark-object tests. Native contrast without dimming remains ordinary.

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.

The combination of vivid colors, deep blacks and high peak brightness wins praise in favorable scenes. Owners disagree on consistency: muted dark scenes and reported brightness decay can interfere with immersion.

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

A built-in cooling fan is present, but testing found it quiet or effectively inaudible at a normal seating distance.

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

Fine 5K detail, vivid colors and high dynamic range create a striking overall image. Tone-mapping accuracy and consistency are less universally admired.

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

There are usable sRGB presets and some very good calibrated results. Default SDR saturation or white balance can be inaccurate without color management.

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.

Brilliant SDR output and large HDR highlights make daylight use easy. Small highlights are less forceful, and independent tests disagree over whether sustained HDR brightness falls after several minutes.

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

The refreshed on-screen interface is fast, logically arranged and provides handy shortcuts. One tester found the physical joystick small or awkwardly placed.

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-compatible variable refresh keep gameplay responsive with little tearing. The best overdrive setting differs by refresh rate in the faster mode.

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.

Full-bandwidth DisplayPort 2.1 can carry high-refresh 5K without display stream compression on compatible hardware, a useful advantage over lower-bandwidth connections.

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

Neither picture-in-picture nor picture-by-picture is available, limiting simultaneous use of multiple video sources.

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.

An understated, slim-bezel front, flat metal base and optional rear RGB make for a tidy gaming setup. A few find the gray plastic less premium than expected.

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

The body feels generally solid and the metal stand inspires confidence, but the largely plastic housing and surface finish do not always feel worthy of the premium price.

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

Reading profiles and subdued bias lighting are welcome conveniences for long desk sessions, though they do not substitute for personal brightness adjustment.

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 size balances high pixel density with a manageable desk footprint. Users wanting a large physical workspace may feel cramped even at 5K.

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.

Standard country-dependent warranty coverage is available, but at least one tester wishes premium monitors offered substantially longer protection.

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.

The original premium pricing draws repeated criticism when 4K OLED or Mini LED monitors cost much less. Deep discounts make its unusual 5K flexibility more compelling.

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

HDMI 2.1 makes high-resolution console connections straightforward, including tested 4K/120Hz operation on PlayStation hardware.

The simulated audio processing can make dialogue easier to separate from background effects. Other testers would still use a dedicated headset for convincing game sound.

Bass enhancement and AI sound adjustments can make dialogue clearer, but they do not turn the thin built-in speakers into a convincing audio system.

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

Automatic scene-based changes are available, but dynamic color shifts can undermine accuracy. Leaving the feature off is preferable for faithful image reproduction.

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

Exceptionally tight backlight control makes halos and LCD light spill hard to spot in many dark scenes.

The backlight-strobing mode is unusually clear and retains substantial brightness. It is restricted to native-resolution mode, cannot be used with VRR, and is not ideal for every game.

Subtle rear hexagon lighting adds atmosphere without making the front look flashy. Its positioning suits the compact 27-inch frame, and the effects are customizable.

Mac and Windows users report straightforward connections and sensible scaling. Whether maximum refresh rates are available depends on the connected computer.

The switch between sharp 5K/165Hz and faster QHD/330Hz is a standout strength. QHD sacrifices fine detail but is much more usable than the 1080p alternate modes on some 4K screens.

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.

Native 5K gaming is substantially more demanding than 4K, with sizable frame-rate losses in demanding titles. The 1440p mode is a useful escape hatch for less powerful systems.

One long-term owner found unusually clean gradients and natural transitions, contributing to an impressively polished image.

The backlight produces powerful larger highlights while preserving dark blacks. Very small bright objects such as stars and lamps can be dimmed too heavily or disappear.

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

This model lacks the streamlined display daisy-chaining available on some higher-end productivity monitors.

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

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

Sound is a little better than some monitor speakers and works for everyday alerts, but voices can sound thin and dedicated speakers are better for media.

The USB-C connection is convenient, but the absence of Thunderbolt limits advanced docking compared with some productivity-focused rivals.

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.

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.

Early sharpness defects, intermittent slow wake-ups and occasional corrupted output raise concern despite several strong reports of daily operation.

The stand snaps together and the display is manageable for one person to unpack. Basic setup is much easier than fixing early firmware issues.

Tone mapping is a divisive weakness: one test found broadly decent tracking with slightly dark output, while an owner found low- and medium-brightness HDR scenes seriously inaccurate.

The LG Switch application has failed to recognize connected monitors during necessary updates, making maintenance needlessly frustrating.