Compare ASUS ROG Swift OLED PG27UCDM vs LG 27GX790A-B

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

The menu and day-to-day controls are approachable, although extracting peak performance and handling OLED care may be demanding.

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

Updates can improve some display behavior, but reported screen-splitting and connection glitches were not fully resolved for every user.

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.

Small fonts can have colored edges or a hazy outline because of the WOLED subpixel pattern and matte coating, reducing its appeal for heavy reading.

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

Noticeable gray streaks, dirty-screen effects and dark-scene banding appear on some units, even after cleaning cycles.

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

There is no USB-C charging output, so handhelds and laptops need their own power connection.

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

The package includes useful HDMI, DisplayPort, and USB cables, reducing the need for extra setup purchases.

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.

The screen handles basic work, but small-font clarity and gray-uniformity drawbacks make it less versatile than sharper office-oriented alternatives.

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

The 24-inch emulation mode can look blurry or incorrectly mapped, making native full-screen 1440p the more reliable choice.

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.

Game visuals look clean at QHD, but some desktop fonts and interface elements appear softer or more pixelated than on a 4K screen.

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.

Native 1440p strikes a useful balance for extremely high frame rates and looks pleasing in games. It lacks the extra sharpness of competing 27-inch 4K OLEDs.

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 finish controls mirror-like reflections with little obvious grain for some, but others prefer a glossy surface for maximum crispness.

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

Two USB-A ports are handy for a mouse and keyboard, but the limited hub and missing USB-C do not replace a fuller workstation dock.

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 broad metal base stays low and leaves usable space above it for desk accessories, though its footprint and bulk will not suit every layout.

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

WOLED provides near-instant pixel response and perfect blacks, while its subpixel arrangement and older-generation brightness impose tradeoffs.

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.

Two HDMI 2.1 sockets, DisplayPort 2.1 and a modest USB hub cover gaming essentials, but the lack of USB-C is conspicuous.

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

The familiar 16:9 proportions work naturally with the 27-inch QHD size and fit the preferred desktop layout.

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.

Frame-rate swings can produce pronounced brightness flicker, most conspicuously in dark scenes, so stable frame caps or fixed refresh may be preferable.

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.

Deep OLED blacks, rich colors and vivid effects make immersive games a pleasure, though full-screen brightness trails newer panels.

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

The panel displays richly saturated colors and substantial DCI-P3 coverage, even if QD-OLED alternatives reach a little farther into wide-gamut spaces.

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.

Pixel movement, a screen saver, cleaning functions and standby behavior help manage OLED wear, but prolonged static interfaces still require care.

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.

PS5 and Xbox work with modern HDMI signals and enjoy OLED contrast, but they cannot exploit 480Hz and a few lower-refresh quirks remain.

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

Controls feel exceptionally immediate at high refresh rates, though older firmware and some 60Hz situations have drawn complaints.

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

The fast OLED panel leaves little visible trailing or smearing, with minor overshoot seen in tests but generally hard to spot in play.

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

There are no integrated speakers, leaving users to rely on a headset, desktop speakers or the headphone output.

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 fast, colorful OLED gaming experience wins strong praise, but this specialized screen leaves value-focused and productivity-first buyers with better options.

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.

This is a standout fit for serious esports players who can drive 1440p at very high frame rates: targets stay crisp and controls feel immediate.

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 matte coating diffuses glare effectively under many lights, although direct windows and edge-spread reflections remain distracting for some.

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

Metal stand components, a slim frame and neat styling give the display an expensive, carefully built feel.

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

There is a generous selection of picture modes and game-oriented overlays; some HDR simulation and gamma choices need tuning.

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

The solid, low-profile metal base keeps the panel steady while allowing repositioning, with only minor complaints about size or shape.

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

Extremely rapid pixel transitions keep edges crisp even through frantic camera movement, supporting the monitor’s esports strengths.

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.

With suitable hardware, the monitor combines native 1440p with extraordinary speed and broad sync support. Its biggest advantages live in fast PC titles.

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.

Individually controlled OLED pixels deliver convincing, nearly ink-black shadows and an immersive dark-scene image.

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

Almost blur-free 480Hz motion is the defining attraction, keeping fast-moving targets and small details clear in competitive games.

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

A native 480Hz refresh makes motion dramatically smooth and is its clearest reason to buy, provided the PC can render enough frames.

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

Height, tilt, swivel and portrait pivot are handled smoothly and precisely, making it easy to tailor the panel position.

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

The stand includes a useful pass-through and accessible connections, though one low-positioned route can leave visible cables.

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

The standard 100×100mm mount supports alternate stands or arms if the included base is not a good fit.

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

Colors and contrast remain strong from off-axis seating, especially when compared with some newer WOLED alternatives.

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.

Official FreeSync and G-SYNC support gives AMD and Nvidia owners flexible, tear-reducing operation; the separate flicker issue remains a caveat.

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.

There is no built-in KVM, limiting convenience for people who want a single keyboard and mouse to follow multiple computers.

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 2.1 is a welcome gaming connection, but UHBR13.5 bandwidth still requires compression for 1440p at 480Hz, and occasional handshake problems have been reported.

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

Color can look excellent once calibrated, but out-of-box white balance and gamma results vary sharply between tests and modes.

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

The internal cooling arrangement is described as very quiet, with no distracting fan noise in normal use.

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

Constant-brightness modes keep desktop luminance steady, while variable modes add extra pop for games and video. A higher peak setting can make brightness changes more obvious.

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

The joystick menu is generally quick and easy to navigate, although a remote or more direct controls would suit some people better.

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.

Brightness is generally adequate for a gaming room and HDR highlights stand out, but sunny offices and the newest OLED rivals reveal its limitations.

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

Vivid colors, exceptional contrast and striking HDR detail make games look fantastic; uneven dark grays and modest resolution temper the result.

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

Broad FreeSync and G-SYNC support is a plus for fluid gaming, although VRR flicker and occasional mode instability complicate the experience.

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

Shadow-lifting adjustments can uncover hidden details in darker games and partly offset occasional near-black crushing.

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 is especially captivating when bright effects appear against deep black surroundings. Some comparisons favor newer OLEDs for sustained brightness, but the older panel can track intended HDR tones more faithfully.

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

Per-pixel OLED lighting gives almost bottomless contrast, especially effective when small bright objects appear in dark scenes.

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

LG’s Windows utility is usable rather than elegant, and firmware changes have delivered both picture improvements and unresolved glitches.

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

Adjustable white balance, gamma, gamut, and even hardware calibration offer unusually flexible fine-tuning. A colorimeter is useful if color precision is a priority.

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.

Warranty duration and burn-in terms are a recurring source of caution, particularly alongside longer rival guarantees and third-party sellers.

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 monitor looks strongest on sale: its unique 480Hz speed can justify the premium for enthusiasts, but regular prices invite faster or sharper rivals.

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

Two HDMI 2.1 inputs are a good match for game consoles and additional devices, adding welcome flexibility to a PC-focused display.

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.

A thin panel, narrow bezels and restrained dark styling look polished, with minor complaints about reflective trim and the stand.

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

Low-blue-light treatment and adjustable brightness help some users, but others report tired eyes or discomfort during extended use.

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

The panel and metal stand feel sturdy, with precise moving parts and a solid construction that matches its premium positioning.

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 footprint suits many competitive setups, but some prefer a smaller tournament-style screen or a larger cinematic display.

The smaller simulated play area is a poor substitute for a native 24-inch screen: it looks blurry and its pixel mapping is unconvincing.

LG omits black-frame insertion, leaving more persistence blur at lower refresh rates than rivals with dedicated motion-blur reduction.

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

The hexagonal rear lighting adds restrained gaming flair, though its brightness and customization may feel limited next to showier setups.

There is no 4K/1080p dual-resolution switch; the panel stays focused on native 1440p esports gaming rather than covering two distinct gaming modes.

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.

Crosshairs, a frame-rate counter, and shadow-enhancing controls are useful, but specialty tools such as timers are missing and the 24-inch emulation disappoints.

Crosshairs and frame-rate overlays are present, but the omission of timers disappoints users expecting a fuller set of esports aids.

Reaching the full 480Hz benefit calls for unusually high, steady frame rates and a powerful PC. Lesser rigs still run smoothly but leave much of the panel untapped.

Dark gradient steps and gray banding can be visible, especially near black; refresh routines or firmware adjustments may reduce the problem without guaranteeing its removal.

Pinpoint highlights are vivid, and bright objects generally retain convincing texture; the panel cannot sustain the same punch across large bright areas.

The four-pole headset output is convenient, and DTS processing can add impressive depth and bass without external speakers.

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

OLED retention and burn-in remain considerations for long sessions with static heads-up displays, despite onboard protection tools.

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.

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

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

Constant-brightness operation and adjustable color controls help with Photoshop-style work, though high-resolution alternatives remain appealing for detail work.

QHD at 27 inches is sharp enough for many games, but 4K displays deliver visibly finer details, particularly with tiny interface text.

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

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

Deep black is a strength, but some dark-gray detail can disappear or look too elevated depending on the selected mode and firmware.

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.

Rear-facing connections are relatively easy to reach, while the nearby headphone jack and straightforward layout simplify peripheral changes.

Three DTS headphone modes provide distinct sound presentations, adding welcome flexibility for gaming and entertainment.

Rich hues stand out beautifully against OLED blacks, although bright saturated colors are not as intense as on some QD-OLED or newer tandem-OLED panels.

Some accounts describe a two-tone split image after waking or applying calibration, along with occasional connection handshakes. Changing modes may temporarily restore the image.

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

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

DTS Headphone:X adds useful directional cues and fuller sound through headphones, making it a worthwhile extra for headset users.

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.

OLED wear and sporadic display glitches make long-term care and firmware stability more consequential than on a typical LCD.

Basic assembly and connections are straightforward, with the panel clipping onto a stable stand and useful cables included.

Some measurements are very accurate while others find bright midtones, crushed shadows or awkward preset behavior. Calibration and firmware can make a substantial difference.

HDR picture modes retain useful brightness and color-temperature settings, allowing substantial adjustment rather than locking the entire image.

The older panel is praised for preserving intended HDR brightness more faithfully than some newer modes, though peak settings can still compress highlights.

Very slim borders give the panel a clean, nearly floating appearance, even though a reflective strip below the screen may catch light.