Compare LG 27GX790A-B vs LG 45GX950A-B

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.

Switching between the two main display modes is generally straightforward, sometimes with a dedicated button or software shortcut. A few connection-specific reports describe slower or troublesome changes, particularly over DisplayPort.

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.

Bright saturated colors are a weak spot compared with QD-OLED alternatives. Higher white-highlight brightness does not produce the same improvement in vivid color brightness.

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

The active cooling fan runs quietly enough to go unnoticed even by someone sensitive to noise. Operating sound should rarely distract from work or play.

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

FreeSync and G-SYNC compatibility keep motion fluid with minimal tearing and stutter. Adaptive sync works effectively across different refresh settings.

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.

SDR's uniform-brightness behavior keeps desktop windows from constantly dimming, though OLED brightness limiting remains noticeable in some bright content. Static-area dimming can also intrude during HDR viewing.

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

SDR color is often pleasing or accurate with appropriate settings, including good factory calibration on some units. Other measurements find oversaturation or color errors, so demanding work benefits from tuning.

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

There is no integrated KVM switch, a notable omission for a premium monitor with multiple video inputs. Switching a keyboard and mouse between computers needs another solution.

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

LG's joystick-driven menus are generally straightforward, with convenient shortcuts and clear setting groups. Some controls feel more limited or inconsistent than those on competing premium gaming displays.

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

DTS Headphone:X delivers a striking spatial presentation when paired with a compatible headset. The distinct EQ presets are particularly appealing for immersive gaming audio.

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

The towering 5K2K OLED delivers crisp details, deep blacks and strong HDR impact in many games. It is most spectacular in dark or mixed scenes rather than bright full-screen content.

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.

Dark HDR gaming scenes can look spectacular thanks to deep blacks, crisp highlights and rapid pixel response. Bright full-screen scenes and bright color reproduction are less convincing, with different settings favoring punch or accuracy.

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.

DisplayPort 2.1 offers modern connectivity, but its bandwidth falls short of the UHBR20 maximum, so full-resolution high-refresh signals can require compression. One setup also suffered HDMI-versus-DisplayPort reliability differences.

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

Small bright highlights can be punchy for OLED, but sustained bright scenes are comparatively dim. Brightness evaluations vary with content, mode and room lighting.

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

Near-perfect OLED blacks yield exceptionally strong perceived contrast and depth. High-contrast gaming and HDR imagery are among its biggest strengths.

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

Dark-game details remain clear thanks to OLED pixel control and strong black separation. It handles shadows particularly well when a scene mixes darkness with bright highlights.

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

USB-C with up to 90W delivery is a practical bonus for laptops and MacBooks. A single cable can supply video and charge a compatible notebook.

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

The appearance is understated, but a premium price does not always translate into the luxurious finish offered by some competing ultrawides.

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

The choice between detailed 5120×2160 at 165Hz and smoother 2560×1080 at 330Hz makes the monitor unusually versatile. The high-speed mode sacrifices obvious sharpness, and opinions differ on how often that tradeoff is worthwhile.

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

Abundant horizontal and vertical workspace makes window tiling, timelines and simultaneous applications genuinely practical. The strong 800R curve and OLED burn-in concerns are the main compromises for full-time work.

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

Shrinking the display to 24 inches offers a focused view for fast games, but the lower-resolution scaling can look soft or downright unusable. The smaller competitive modes are far more divisive than the native 5K2K picture.

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

The built-in speakers are a useful convenience and can sound clear and surprisingly loud, but assessments vary sharply. Some find them distorted or weak enough to prefer headphones or external speakers.

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 5120×2160 resolution finally gives a 45-inch ultrawide the detail it deserves. Games and desktop text look substantially sharper than on older 3440×1440 panels of similar size.

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 updated pixel structure and higher density reduce colored edges around text versus older WOLEDs. Some residual softness and fringing remain compared with conventional LCD or RGB-stripe panels.

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

Variable-refresh flicker remains an OLED caveat, especially in dark scenes with unstable frame rates. Some testing found it restrained, while another assessment saw it worsen in the 330Hz mode.

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

Fine detail and text look far clearer than on previous low-density 45-inch OLEDs. Native 5K2K is impressive, although smaller 4K screens and glossy or RGB-stripe designs can still look crisper.

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 huge panel demands substantial desk width and depth, although its relatively compact flat stand helps recover some usable surface. Measure your workstation before making room for the 800R curve.

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

Pixel shifting, a screen saver and cleaning cycles offer basic OLED care. Protection controls are more limited than on some competitors, and static desktop content remains an ownership concern.

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 330Hz mode and OLED responsiveness can serve fast competitive play, but the huge image and softer scaling make it less focused than smaller esports monitors. Competitive suitability depends on the game and priorities.

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

Lower-resolution modes look much softer than native 5K2K, and the smaller simulated screen sizes suffer particularly poor scaling. Smoother 330Hz motion does not always make up for the loss of definition.

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

Consoles can output a sharp 16:9 image with HDR and supported high refresh rates, but they cannot fill the ultrawide format natively. Stretched presentation and side bars make this a secondary rather than ideal console screen.

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 gradients are reasonably smooth, but subtle tonal transitions do not quite match the refinement of the best QD-OLED alternatives.

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

Standard VESA mounting gives flexibility to use an arm or wall mount if the desk stand is unsuitable. The size and weight still demand appropriate support.

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

The resolution and large canvas can help with graphics and photo work, but the tight curvature can distort straight lines. It is better as a versatile creative display than as a flat reference monitor.

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

At about 125 pixels per inch, the 5K2K panel is a huge upgrade over earlier 45-inch OLED ultrawides. It is still less dense than smaller 4K monitors, but text and fine details are much more usable.

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.

Driving 11 million pixels at high settings is demanding, especially in modern AAA games. A powerful graphics card is needed to get the full benefit of 5K2K and high refresh rates.

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

Several assessments found the stand solid and well controlled, while others noticed wobble when the large panel was bumped. Stability depends partly on the desk and how it is positioned.

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

The compact stand, cable pass-through and rear cover help keep wires tidy despite the enormous display. Management is useful without being especially elaborate.

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

The WOLED panel covers DCI-P3 well and produces vibrant game colors, but color range trails leading QD-OLEDs. The difference is most apparent in highly saturated HDR imagery.

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

Input lag is consistently very low on PC, keeping controls responsive in both primary modes. Some console measurements are less impressive, but PC gaming responsiveness is a clear strength.

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

The rear RGB accent adds a little personality without cluttering the front. Its colors can be customized or switched off for a more restrained setup.

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

Instant OLED pixel transitions produce little or no visible ghosting, overshoot or smearing. Fast camera movement remains exceptionally clean.

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

The four-pole headphone output and DTS modes deliver engaging, distinct sound profiles with compatible headsets. Headphone playback receives much stronger praise than some built-in speaker assessments.

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

An HDMI cable, DisplayPort cable and USB-C cable are included, sparing buyers several immediate accessory purchases. The package generally feels well equipped for setup.

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

Support for common adaptive-sync standards broadens compatibility across modern GPUs. The screen can take advantage of variable refresh in both principal display modes.

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

Useful gaming profiles and picture modes are available, but some defaults over-sharpen the image or hide adjustments. Finding the most natural-looking configuration may require experimentation.

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

Some panels show faint dark-gray banding, tinted edges or edge dimming, especially on uniform images. These flaws often recede during varied gaming content.

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 two USB-A downstream ports can handle basic peripherals, but their data path relies on the USB-C connection. The arrangement is less convenient than a fuller desktop hub.

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

The enormous 21:9 field of view and high native resolution make story-rich, exploratory and cinematic games a standout experience. Deep blacks and fast OLED response complete the effect.

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

Small HDR highlights stand out against inky blacks, giving explosions, sparks and bright reflections impressive definition. Detail stays visible in many demanding contrast-heavy scenes.

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

The monitor earns strong enthusiasm for its screen size, sharpness and immersive gaming, even from those who criticize particular settings. Its steep cost, aggressive curve and a few display compromises keep it from being an easy all-purpose recommendation.

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

Native 165Hz is smooth for high-resolution games, and the optional 330Hz mode is enticing for fast play. Achieving the faster rate requires giving up the detailed 5K2K image.

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

The anti-glare finish is polarizing: it mutes mirror reflections, but its visible grain or haze reduces perceived crispness. Fans of glossy OLED clarity may find this coating disappointing.

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

The matte treatment is effective against sharp reflections, although certain light positions still create diffuse glare or raised-looking blacks. Moderate room lighting generally suits it better than a sunny window behind the user.

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

Fast motion, high-bandwidth connections and vivid OLED picture quality make the monitor highly capable when paired with a gaming PC.

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

Pixel response is extraordinarily fast across refresh rates, giving clean movement with little overshoot. It compares particularly well with even high-end LCD gaming panels.

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

High-bandwidth HDMI, DisplayPort and USB-C make the main video connections versatile. The small downstream USB selection and missing KVM are disappointing at this price.

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

The taller 21:9 layout offers more useful vertical room than many 32:9 alternatives without sacrificing much horizontal immersion. It is especially appealing for games and work that benefit from height as well as width.

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

The OLED panel renders fast motion with excellent clarity and almost no response smearing. Switching to 330Hz improves smoothness further, although the reduced resolution brings its own softness.

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

Height, tilt and swivel adjustment are generous enough to position the screen comfortably. The compact flat metal base adds practical space compared with wide-legged stands.

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

Individual OLED pixels switch fully off for exceptionally deep blacks. This gives dim environments, shadowy games and high-contrast scenes real depth.

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

WOLED brings the expected deep blacks and rapid response with a notably higher pixel density than earlier 45-inch OLED designs. Its color volume still trails some QD-OLED competitors.

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

Viewing angles are consistently excellent, with little degradation when looking from the sides or sitting within the curve. The wide panel retains strong color and contrast across the image.

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

HDR tone mapping is a recurring compromise: the most accurate mode caps peak highlights, while brighter modes over-lift darker areas. Console calibration and source-based tone mapping are additional concerns.

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

Low and High peak-brightness selections give useful control over HDR presentation. The tradeoff is that the brightest setting can lift the entire dark scene instead of preserving the most faithful tone curve.

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

There is a worthwhile selection of white-balance, gamma and six-color adjustments, plus software calibration. Controls vary by picture preset, and some modes lock useful adjustments.

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 launch-level price is a major barrier, even allowing for its unusual 45-inch 5K2K panel. A lower sale price helps, but there are much cheaper OLED alternatives for owners who do not need this exact format.

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

The two-year warranty is less reassuring than the three-year burn-in coverage available on several rivals. Burn-in terms could be stated more clearly, especially for such an expensive OLED.

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

The two high-bandwidth HDMI 2.1 ports are well suited to current PCs and consoles. They help make a large PC-first monitor flexible for secondary gaming devices.

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

Tool-free stand attachment and supplied cables make initial assembly approachable despite the giant panel. The bulk of the monitor remains the main handling consideration.

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

Gamma and white balance are often strong out of the box, but certain profiles and calibration attempts can introduce tracking errors. Getting an exact preferred gamma curve may require software workarounds.

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

The towering 45-inch screen delivers an unusually expansive view and plenty of workspace. It can also dominate an ordinary desk, so buyers should be comfortable with its size.

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

The stand and chassis feel substantial and carefully built, with a reassuringly solid base. The large panel still needs careful handling.

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

A clean rear shell, slim bezel framing and restrained accents make the monitor look stylish without excessive gaming decoration. A few find the finish less luxurious than its premium price suggests.

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

Slim, evenly proportioned bezels and a logo-free front let the OLED image dominate. The restrained frame reinforces the premium, minimalist appearance.

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

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

The built-in speakers deliver some bass at moderate volume, but low-frequency impact is modest. They suit everyday playback better than bass-heavy entertainment.

OLED's per-pixel lighting produces clean bright objects against dark backgrounds, with essentially no blooming or halo distractions. Starfields and high-contrast game scenes look particularly crisp.

The factory picture is already appealing, and both on-monitor tweaks and calibration software can refine its grayscale and color accuracy. Exact targets can still require additional calibration tools.

The tight 800R curve can feel wonderfully enveloping during gaming and simulations, yet others find it excessive for everyday use and straight-line work. Its shape is a major preference-dependent decision.

Careful packaging kept the large curved test panel in good condition on arrival. A protected delivery is especially welcome for a display of this size.

Protective dimming around the edges can show up as uneven brightness, especially in uniform dark scenes. It is usually subtle in varied content but can bother people who notice vignetting.

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

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.

There are several HDR settings to suit taste and room conditions, including more faithful and punchier choices. None perfectly combines maximum highlight brightness with the tightest tonal accuracy.

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

The USB-C input works with MacBooks and supports a work-and-game setup, though macOS scaling can add overhead. It is convenient but not completely frictionless.

Energy use is a noticeable drawback for such a large, bright OLED screen. Efficiency is not its selling point.

PS5 gaming works with a properly proportioned 16:9 image, HDR and high-refresh output where supported. Expect black bars, not genuine ultrawide console gameplay, and some console-specific HDR compromises.

An included remote makes it convenient to change modes and audio level without reaching behind the massive display.

Availability can be limited even after launch, making it harder to find a reasonable deal on this unusual screen.

Sound quality splits opinion: several find the speakers rich, clear or surprisingly powerful, while others hear distortion or thin sound. External audio remains attractive for demanding listeners.

Ultrawide PC games gain tremendous immersion from the tall screen, high resolution and wraparound curve. The experience is outstanding when games support 21:9 well and the desk can accommodate the display.

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

Windows Auto Color Management offers another way to improve SDR color handling while keeping settings flexible. It can be a little less accurate than the best dedicated profile.

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

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

Display Stream Compression is generally treated as an acceptable way to obtain the maximum native-resolution refresh rate. There is limited user control over DSC, which may frustrate enthusiasts who want every signal option exposed.

One unboxing found the supplied DisplayPort cable too short for a PC positioned farther from the desk. Owners with distant towers may need a longer cable.

Picture-in-picture and picture-by-picture make the broad screen useful for viewing two sources at once. The modes are particularly handy for PC-and-console or laptop-and-console setups.

The tall 21:9 format works beautifully with games that support ultrawide output, but some titles add black bars or distort the field of view. Checking individual game support matters.

LG's calibration software and profile memories offer serious tuning options for owners with measurement tools. The facility is useful, but realizing its full benefit takes extra equipment and effort.

Connections can work smoothly, but one setup had serious DisplayPort HDR and mode-switching problems and worked reliably over HDMI instead. Performance appears sensitive to the particular hardware and input.

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

The small joystick responds readily to directional inputs, making picture adjustments less fiddly than they could be on a screen this large.

LG's desktop control and calibration utilities make certain settings easier to change without using the rear joystick. Software also adds tuning options beyond the monitor's basic menus.

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

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

The monitor's anti-flicker provisions are limited, so sensitive owners may still need to consider OLED flicker behavior in variable-refresh situations.