Compare LG 45GX950A-B vs Samsung Odyssey OLED G91SD S49DG910S

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.

The USB-C ports do not provide laptop charging, so a separate charger remains necessary.

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

The silver styling and polished stand create a convincing high-end desk centerpiece.

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.

Integrated audio is a weak point: accounts either describe no usable speakers or strongly discourage relying on them, so external sound is the safer plan.

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.

Monitor arms are possible, but the screen’s weight requires a heavy-duty mount and there are differing accounts of adapter requirements.

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.

The glossy screen makes color look lively but can reflect room lighting, so glare control is worth planning.

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 glossy finish gives blacks and colors extra depth, especially in controlled lighting.

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.

Graphics mode is a favorite for keeping the picture pleasing and colors accurate without relying on default settings.

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.

Its nearly desk-spanning width and substantial stand make physical space as important as graphics performance.

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.

There is no rear RGB show, which can be a welcome absence for buyers who prefer an understated desk.

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.

Small text, particularly white type on black, can show distracting color fringes for sensitive users.

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.

144Hz is plenty smooth for many games, yet notably behind the 240Hz alternatives aimed at enthusiasts and competitive players.

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.

Quantum-dot color delivers vivid, saturated scenes and strong visual punch across gaming and entertainment.

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.

HDMI connections can accommodate a console alongside a PC, although the limited number of inputs reduces flexibility.

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

Bright scenes can draw substantial power from the expansive OLED panel, adding a small running-cost consideration.

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 quick OLED response and wide field of view help, but esports-focused players may prefer a smaller 240Hz-or-faster display.

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.

Pixel shifting, logo dimming and warranty coverage provide some reassurance, but persistent static content still creates an OLED upkeep concern.

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.

Multiple sources and generous horizontal space create a flexible workspace, with room for active documents, games and monitoring windows.

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.

Smooth height and tilt adjustments help positioning, although swivel and pivot are not uniformly available or practical.

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.

HDMI, micro-HDMI and DisplayPort are practical, but the limited video inputs and lack of USB-C video leave less flexibility than some rivals.

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.

The gentle wrap draws peripheral action into view and can reduce head movement across the enormous 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 wide, detailed image keeps expansive game scenes crisp rather than looking soft simply because of its size.

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.

Driving 5120×1440 at high frame rates needs a capable gaming PC; the big display is not a free performance upgrade.

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.

Useful connection cables are supplied, and the unboxing includes helpful extras for getting started.

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.

The overall appeal is strong for immersive gaming and large workspaces, tempered by real compromises in brightness, cost and ownership care.

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.

The screen packs enough fine detail across its huge 49-inch span to keep the visual experience sharp.

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.

The 32:9 layout provides an expansive, bezel-free field of view that is especially rewarding in compatible games and wide desktop workspaces.

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.

Immersive panoramic scenes, deep blacks and responsive 144Hz motion make story-driven games a natural fit.

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

Deep OLED blacks are one of the screen’s standout strengths, bringing dramatic depth to dark games and movies.

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.

Bright subjects against dark backgrounds stay clean without the distracting blooming sometimes seen on backlit panels.

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

The OLED pixel response keeps moving objects exceptionally clean, with little visible blur or ghosting.

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.

A USB-C-to-HDMI cable can make the monitor work with a MacBook, although it is not a one-cable Mac docking solution.

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.

Fast OLED pixel transitions and 144Hz refresh produce clean, smooth movement in supported games.

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.

QD-OLED color and pixel-level blacks are central to the monitor’s appeal and set it apart from conventional backlit options.

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.

Dual-QHD resolution supplies expansive, detailed space for games and side-by-side work, while also placing heavy demands on the GPU.

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.

Near-instant OLED transitions make action feel crisp and responsive, including fast-moving shooters.

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.

Dark environments retain strong visual depth and useful shadow definition without washing the scene out.

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.

The immersive 32:9 view is a highlight in supported games, though uneven ultrawide support and high GPU demands are caveats.

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.

Picture-by-picture is useful, but source and display-mode changes can be slow or finicky, particularly with more complex connections.

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

The modest full-screen brightness is the clearest picture-quality sacrifice, especially when daylight hits the desk.

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.

Rich OLED color is backed by useful picture presets and factory calibration, making the image attractive without extensive tweaking.

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.

HDR dark scenes look impressive thanks to OLED contrast, while restrained peak brightness leaves less impact in brilliant highlights.

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

FreeSync and G-Sync compatibility help keep racing and other fast games fluid, with one hands-on account finding smooth play without tearing.

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.

Showing two sources at once is a genuinely useful feature, especially across this wide panel, though mode changes can take a moment.

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

Exceptionally dark blacks alongside bright colors make scenes cinematic and visually striking.

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.

The QD-OLED image impresses most with inky blacks, colorful scenes and a vast panoramic presentation, despite brightness limits.

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.

At the right sale price, this offers unusually accessible 49-inch QD-OLED immersion; at higher prices, limitations are harder to excuse.

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.

Some multi-device cable arrangements reportedly struggle to maintain the intended resolution and refresh rate together.

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.

Not every game handles 32:9 correctly; incompatible titles may require fixes or compromise the immersive view.

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.

Assembly is straightforward with a helper and sensible instructions, but lifting this large, heavy monitor is not a one-person task.

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.

Burn-in coverage and warranty options sound reassuring, but reports of disputed panel-damage claims complicate the ownership picture.

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

The edge bezels look slim, but the bottom border is somewhat thicker than one owner would prefer.

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

The sleek stand and premium-looking finish are appealing, though separate concerns about potential panel failures temper confidence.

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.

The silver finish and sleek curved profile give the desk a modern, high-end look.

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 huge 49-inch canvas can replace a pair of QHD displays and dramatically expand game views, provided the desk can hold it.

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.

Trying the picture modes can improve the image, with Graphics mode standing out as a pleasing balance of color and accuracy.

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.

Samsung Display Manager makes the many image and split-screen settings easier to handle than navigating the on-screen menu alone.

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.

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.

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 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.

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.

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.

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.

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

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.

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.

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.

Thermal brightness management is presented as a useful safeguard for keeping the large OLED panel comfortable and protected.

Static toolbars and game HUDs warrant care; one extended coding session was followed by a faint, temporary ghost.

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.

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.

Thick protective packaging is reassuring for such a large and delicate display.

Concerns about cracks and possible pixel issues make return policies and inspection especially important at this price.

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

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.

Heavy hardware, a broad panel and the need for a strong monitor arm make relocating or mounting it demanding.

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.

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

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.

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 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.

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.

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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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

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.

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.

Without integrated Tizen apps, this version depends on an attached device for streaming services.

Samsung’s display utility helps unlock the best configuration, but using it and maintaining graphics drivers adds a setup step.

Flicker-free and Eye Saver options help long sessions, while the wide curve can keep distant content within a more comfortable viewing arc.

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

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.

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.

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.

Concerns about possible panel cracking and failures introduce an ownership risk that deserves attention alongside the excellent visuals.