Compare Dell Alienware AW3926QW vs LG 27GX790B-B

USB-C video plus 90W laptop charging simplifies a desk with a compatible notebook. Its flexibility is especially useful alongside a gaming PC.

The USB-C port supplies only 5W, far too little to charge most laptops adequately.

The built-in power supply avoids the bulky external power brick of some competitors. It helps make the workstation tidier.

An external adapter adds another object to manage on or beneath the desk.

The 5120×2160 desktop offers substantially more working area and sharper scenery than conventional 1440p ultrawides. The added pixels also increase the graphics workload considerably.

Native 1440p looks good at 27 inches, but enabling 720Hz reduces the image to a very soft 720p; detail-focused buyers may want 4K.

Black levels remain deep under moderate ambient light, but bright windows and lamps can show obvious mirror-like reflections. A matte rival may be more comfortable in strongly lit rooms.

The matte surface is effective against ordinary reflections, although direct window glare can still overpower it.

The low-haze glossy finish enhances perceived clarity and black depth without the soft grain of matte coatings. Its polished look comes with more visible direct reflections.

The matte coating cuts reflections but looks less crisp and punchy than glossy rivals to some viewers; preferences are sharply divided.

The RGB-stripe panel substantially reduces the colored text edges associated with older WOLED layouts. Fonts and small interface labels look particularly clean, making this OLED more convincing for daily office use.

Experiences vary from crisp, perfectly usable fonts to visible fringing on dark text over light backgrounds, especially during prolonged office work.

Routing cables through the stand keeps the rear tidy in ordinary use. The routing can require a little care, and some miss earlier Alienware cable organization details.

Some testers miss an opening through the stand, although one found the included rear clip effective for bundling cables.

The stand base is relatively compact for a 39-inch screen, helping preserve desk space. The panel itself still needs meaningful width and viewing distance.

The base occupies a moderate amount of desk space, and its screen can sit farther forward than expected.

Fine visual details and lettering remain crisp at native 5K2K, helped by the clear glossy surface. The lower-resolution 330Hz mode gives up a noticeable amount of that definition.

Native 1440p delivers crisp graphics, but the optional 720p mode produces conspicuous softness.

Native 165Hz feels smooth for visually demanding 5K2K gaming, but trails the 240Hz-plus speeds of other flagship OLEDs. The 330Hz alternate mode adds speed at a sizeable clarity cost.

Native 540Hz QHD feels extraordinarily fluid and crisp. The 720Hz option is less universally useful because it drops to 720p and demands extremely high frame rates.

Most setups report a stable stand and little unwanted movement. One owner noted wobble at taller heights, making a monitor arm attractive for particularly high positioning.

The weighted, flat metal base remains stable while the screen moves and can hold small desk items.

Large-scale RPGs and cinematic titles benefit from the wide field of view, vivid HDR color and fine detail. The 165Hz native mode is sufficient for many demanding single-player games.

Deep blacks, vivid colors, and bright HDR make cinematic games attractive, though glossy or higher-resolution alternatives may be more immersive for solo play.

The peripheral hub adds helpful connections beyond the display inputs. Its convenient companion ports suit a desk with several wired accessories.

The built-in USB ports add convenience for peripherals alongside the display inputs.

Controls usually respond quickly in both native and high-speed modes, supporting responsive PC gaming. Some 4K test conditions showed more delay than the reviewer wanted.

Fast responses and negligible perceived delay help games feel connected and snappy, including when frame rates are below the monitor’s peak.

High-bandwidth DisplayPort, dual HDMI, USB-C and several peripheral connections cover most mixed setups. Buyers wanting extra HDMI inputs or integrated audio should still check their needs.

Two HDMI inputs, DisplayPort, USB-C, and USB-A provide welcome flexibility, although some would like another HDMI or easier physical access.

Switching between detailed 5K2K/165Hz and faster 2560×1080/330Hz makes the monitor adaptable to different genres. Competitive play feels quicker, but lower-resolution textures and lettering become visibly softer.

Switching between 540Hz QHD and 720Hz HD creates choice, but several testers found the softer 720p image too costly for the modest speed benefit.

Pixel refresh, pixel shifting and burn-in warranty coverage provide meaningful reassurance. Controls are not extensive, and disabling protective edge dimming trades convenience against possible long-term panel risk.

Screen savers and OLED cleaning features offer useful precautions, but short tests cannot guarantee long-term protection from static-image wear.

330Hz and esports modes are genuinely useful for fast shooters, with responsive OLED motion. Serious competitors may prefer a smaller, natively faster display rather than this softer low-resolution mode.

Serious esports players get exceptionally clear motion and responsive control, especially in lightweight shooters that can run at hundreds of frames per second.

Wide DCI-P3 coverage and much stronger colored-light output than older white-subpixel WOLED designs make images vivid and saturated. Adobe RGB coverage is less exceptional than some competing professional-oriented screens.

The wide color gamut gives games vivid, rich color; color purity is a frequent highlight of the newer Tandem OLED panel.

Instantaneous OLED pixel transitions keep motion well defined, especially at higher refresh rates. Running the full-resolution mode at 165Hz still offers less clarity than higher-refresh flagship OLEDs at equal frame rates.

Fast-moving objects show remarkably little blur or trailing, helping target visibility and making rapid camera movement feel precise.

The panel largely avoids older WOLED gray banding, though some samples show side tinting and edge vignetting. A firmware option can eliminate protective CPC dimming, not all innate differences.

Findings differ: one tester saw mostly even color and brightness, while another sample had conspicuous gray-screen texture.

The stock stand offers convenient height, tilt and swivel changes with mostly smooth, reassuring movement. Its maximum height and swivel range are not as generous as every rival.

Height, tilt, swivel, and portrait rotation make it easy to set a comfortable position.

The AW3926QW earns enthusiastic recommendations for its unusually well-balanced size, sharp RGB-stripe OLED image and competitive positioning among large ultrawides. A few owners and testers stop short of unconditional praise because of dimming or connection glitches.

A standout specialist for high-frame-rate PC gaming rather than a universally ideal monitor; image compromises and value depend heavily on how you play.

Per-pixel OLED control delivers inky blacks and convincing shadowed environments without backlight halos. Dark scenes look rich even with some room lighting.

OLED produces exceptionally deep blacks, making night scenes and highlights more convincing.

Console modes can deliver 4K and 120Hz in a correctly sized 16:9 area, and supported HDR sources benefit from Dolby Vision. Consoles generally do not fill the entire 21:9 panel.

A PS5 Pro worked well in hands-on play, with smooth motion and appealing OLED visuals.

Running roughly 11 million pixels at high quality can tax even expensive graphics cards. Upscaling and settings adjustments help, but buyers chasing high frame rates need capable hardware.

Even expensive gaming systems often fall well short of 540–720 fps in modern games, restricting the benefit of the highest modes.

DisplayPort connectivity, adaptive sync and very quick pixel response make it a strong match for capable PC rigs. Native 5K2K gaming is most rewarding when the GPU can keep up.

High-bandwidth ports, variable refresh, and spectacular motion make it well suited to fast gaming PCs that can push high frame rates.

Sharpness and accurate colors support photo workflows, but some edge tint and uniformity issues limit confidence for precision-critical retouching. Its performance is stronger as an all-round creative display.

The colorful QHD panel can handle everyday photo edits, though color-critical work calls for carefully chosen presets.

Pixel transitions are extremely quick, so fast movement stays clean without traditional LCD smearing. This is among the monitor’s most consistent gaming strengths.

Near-instant OLED pixel transitions keep fast motion clear and avoid the smearing associated with slower panels.

Lower-edge USB-A and USB-C sockets are easy to reach for temporary accessories. Those who prefer invisible wiring may dislike cables hanging from the front.

The rear-facing connectors are handy for some setups but require turning the display around in others.

Reports are mixed: some see distracting flicker during fluctuating frame rates, while others barely notice it. The Anti-Flicker option helps, but can slightly reduce perceived smoothness.

Flicker is a concern in variable-refresh use, though an OLED flicker mitigation control can help in some scenarios.

Dell’s three-year warranty, including OLED burn-in coverage, stands out among the premium monitor features. Response to edge-dimming feedback and a firmware remedy are encouraging, though individual hardware faults remain possible.

A two-year OLED warranty looks weak beside some competitors offering three years or more.

At its reported launch price, this panel substantially undercuts the closest 39-inch 5K2K LG OLED while offering sharper lettering and more vibrant colors. It remains a premium purchase compared with ordinary 4K monitors.

At a steep discount, its 540Hz OLED performance compares favorably with pricier rivals; at full price, many gamers can spend far less without giving up much.

The stand clicks into place with minimal effort and no separate tools, making initial assembly straightforward. The physical adjustments are easy to operate.

Tool-light assembly and straightforward stand attachment make initial setup simple.

More restrained peak modes can preserve natural dark-scene presentation better than boosted alternatives. Brighter presets may lift shadows too far or create noticeable dimming elsewhere.

HDR can render scenes brighter than intended, so the panel’s luminous highlights do not always translate into the most accurate presentation.

The sRGB and creator settings provide a useful path to more faithful desktop colors. Hardware calibration is absent and some preset modes restrict white-balance adjustments.

The extensive color menus and personalized picture mode allow meaningful adjustment when stock presets look too saturated.

Small HDR highlights can be punchy, and SDR output is comfortable for typical indoor use. Larger bright areas are less luminous than on the competing white-subpixel LG panel.

The Tandem OLED reaches impressive HDR brightness for its class, although sustained brightness can fall and direct sunlight remains demanding.

FreeSync, G-SYNC and AdaptiveSync support can provide smooth, tear-free play across different graphics cards. There are reports of flicker, minor tearing or smoothness changes depending on settings and system.

Smooth, tear-free play is reported in real-world testing, though there are some cautions about flicker with variable refresh.

Factory accuracy and the calibrated sRGB mode receive strong marks for natural tones. Native wide-gamut SDR can oversaturate colors unless the appropriate settings are used.

The sRGB mode improves on older LG models, but standard gaming modes can appear oversaturated; calibration may be worthwhile.

OLED contrast and vibrant color give HDR games a dramatic look with excellent small-area highlights. Large bright scenes, dimming behavior and imperfect presets temper the enthusiasm.

Bright highlights and perfect blacks create striking HDR games; some evaluations note inaccurate overbrightening and the matte finish softening the visual pop.

Broad bright scenes can lose luminance, particularly in certain peak-HDR settings, and some find this distracting. Routine SDR work and smaller highlights are less affected.

Peak luminance can reduce after sustained output, making short highlights more impressive than prolonged bright scenes.

The physical joystick makes most monitor settings and inputs easy to reach. Multiple menus and mode-switching steps are less elegant than modern smart-display controls.

A compact joystick and straightforward menus make settings easy to find and change.

Detailed 5K2K imagery, saturated colors, glossy clarity and OLED contrast give games a striking, high-end look. A few brightness and uniformity compromises prevent a completely flawless image.

Rich OLED colors, superb contrast, and sharp native QHD images make games look excellent. Some testers dislike the matte finish and uneven gray-screen texture.

The self-emissive panel creates striking separation between deep black regions and luminous details. This contrast is a recurring reason games and HDR footage look so immersive.

Excellent OLED contrast keeps dark areas black while bright highlights pop, especially in atmospheric games.

DisplayPort 2.1 UHBR20 gives compatible GPUs a way to drive native 5K2K at full refresh without display-stream compression. That is a practical advantage over older DisplayPort connections.

DisplayPort 2.1 is a useful match for powerful PCs trying to get the most from the panel’s demanding refresh rates.

The monitor feels solid and carefully assembled, with a restrained plastic chassis that suits a premium gaming setup. One comparison found it less substantial than a competitor’s metal-heavy stand.

The flat metal stand adds substance, but the main chassis is ordinary plastic and not especially premium for the price.

The 39-inch format gives games more vertical presence than typical 34-inch ultrawides without reaching the unwieldy width of many 45-inch models. It still demands a reasonably deep, spacious desk.

The compact, thin-bezel 27-inch form fits common desktop setups without demanding an oversized desk.

The slim four-sided bezels and understated deep-blue rear styling work on both gaming and office desks. Some prefer its minimalist appearance, while others miss Alienware’s more distinctive designs.

The minimalist silver-and-black design fits both gaming rooms and workspaces, with subdued rear lighting rather than excessive decoration.

Controls and setup are broadly intuitive, with convenient adjustment once the menu layout is familiar.

Its 21:9 layout makes supported games feel more expansive and gives desktop applications generous side-by-side space. Standard 16:9 material does not always use the full width.

Rear RGB is customizable and subdued enough not to dominate the desk.

There are no internal speakers, so external audio or a connected soundbar is necessary. Some consider this an acceptable omission in return for the display’s image quality and price.

The 1500R curve gently pulls the edges into view and complements the wide screen for engrossing play. It is less extreme than some larger gaming ultrawides, which many find more comfortable.

One owner had recurring signal and flicker trouble with a particular Nvidia graphics card, although other computers behaved normally. Results may vary with connected hardware and drivers.

Early firmware could visibly darken the panel edges during gameplay, creating bothersome vignetting. A November firmware update added a toggle that removes this CPC effect, with an explicit warning about the protective tradeoff.

A firmware update added an Edge Dimming toggle that successfully removes CPC-related vignetting in testing. Installation is straightforward, though the monitor’s own inherent uniformity variations remain.

Genre presets and personalized adjustments make tuning easy; several modes look similar, and color fidelity varies between them.

Very fast OLED response keeps trailing and smearing minimal in rapid action.

Specular effects and bright accents can pop convincingly against the OLED blacks. The biggest HDR highlights impress more than large, sustained bright areas.

True Black, Peak 1300 and brighter/custom modes give several looks for different games and lighting conditions. There is no universally ideal choice: some settings are too subdued, others unnaturally bright.

Audio presets through the headset jack sound pleasing, with choices for different listening needs.

Prolonged static game-interface elements caused visible image retention on one unit, but pixel refresh reportedly cleared it. Static desktop layouts still call for sensible OLED care.

A broad selection of display, data and power cables makes it easier to connect different computers out of the box. The short USB-C lead may limit placement in some setups.

The monitor arrives securely supported by a divided recyclable cardboard cradle and panel protection. Unboxing and stand attachment are straightforward.

The newer Tandem OLED architecture delivers unusually bright, vibrant imagery while retaining fast OLED response.

About 143 pixels per inch keeps this large ultrawide unusually crisp, including small interface elements and fine game details. That is a major advantage over lower-density large OLED alternatives.

The lighter plastic chassis makes moving or mounting the monitor easier.

It wakes or powers on promptly in hands-on use.

This large RGB-stripe OLED consumes considerable power, especially with full-white content, and is less efficient than some white-subpixel models. Typical gaming narrows the gap but does not erase it.

Slim bezels and restrained styling give the display an upscale front appearance, even though much of its housing is plastic.

Good QHD clarity and easy setup suit general work for some users, but OLED text artifacts are noticeable for others.

Automatic switching between Dolby Vision and HDR10 can be convenient when it works. Some applications stay in the wrong mode or produce momentary black transitions.

One owner reported that switching HDR settings could blank the monitor until it was unplugged. That severe incident led to a return, although other reviews report reliable everyday operation.

The wide, tall-enough 39-inch canvas delivers a compelling sense of presence in supported games. The result is more immersive than a standard 34-inch ultrawide without needing an enormous 45-inch setup.

Standard VESA mounting offers an alternative to the included stand for buyers wanting to reclaim desk space or improve stability. A sturdy arm is important for this size and weight.

Most configurations support variable refresh smoothly, although one tester found small tearing near the bottom of the screen with an Nvidia card. That experience may depend on drivers and the connected hardware.

Many PC titles support 21:9 well, but some games stretch at the edges or remain 16:9. Conventional video and console material often has black side bars.

Dolby Vision is useful with compatible consoles, media players and a limited selection of PC content. Desktop detection and mode switching remain inconsistent, limiting its everyday appeal.

High-bandwidth HDMI ports support current gaming devices and offer flexibility alongside DisplayPort.

One buyer reported persistent flickering, blanking and the need to power-cycle, ultimately choosing to return the unit. Broader long-term reliability cannot be established from these early experiences.

Switching between refresh profiles worked smoothly in one test, but automatic switching between devices was less dependable.

An optional smaller-screen competitive view is available, but its practical value is limited for players who prefer the full QHD image.

The integrated KVM lets a keyboard and mouse move between computers without a separate USB switch. It is a highly valued convenience in work-and-gaming setups.

Internal active cooling stays nearly silent in normal operation, including warmer and brighter scenes. Fan noise is unlikely to distract from work or play.

The display can show multiple sources with flexible arrangements, including a three-source option noted in one comparison. Picture-by-picture use comes with HDR and refresh-rate restrictions.

Headphone processing and sound presets are well liked in one hands-on assessment.

SDR gamma is generally close to target but not perfectly tuned in every mode. One test notes a minor gamma issue, while a later update is reported to improve sRGB behavior.

Custom Color HDR gives users a practical way to tune saturation and contrast to their preferences. Some fixed HDR presets offer considerably less flexibility.