Compare ASUS ROG Strix OLED XG27ACDNG vs LG 27GX790A-B

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

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.

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

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

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

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

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

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

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

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

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.

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.

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

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.

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

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

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.

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

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

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

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

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

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

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

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

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

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

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

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.

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.

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.

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

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

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

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

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

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.

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.

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

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

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

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.

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

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

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

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

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

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

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

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.

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

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

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

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

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

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

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

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.

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

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

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

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

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

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

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

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

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

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

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

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.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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.

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.

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

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

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

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

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.

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

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

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

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

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

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.

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.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

The 27-inch footprint suits many competitive setups, but some prefer a smaller tournament-style screen or a larger cinematic display.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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.

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

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

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

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

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

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

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

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

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

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.

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.

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

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

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

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

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

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

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