Compare LG 27GX790A-B vs Gigabyte MO27Q28G

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

Rear joystick controls and practical shortcuts make everyday operation fairly straightforward.

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 programmable Tactical Switch makes reduced-size displays easier to call up for competitive play, although these emulation modes require some setup and can introduce scaling compromises.

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

Firmware updates improved launch-era color and HDR behavior, so checking the installed version is important for getting the reviewed performance.

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

The display can handle occasional office tasks alongside gaming, but OLED wear and imperfect text edges discourage all-day static work.

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

The Ultra Clear black-frame mode improves perceived sharpness at 120Hz, but it cannot be combined with VRR or HDR and carries brightness and flicker compromises.

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

Built-in speakers are useful for basic audio and casual viewing, but bass and richness are limited compared with external speakers.

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

A cable clip tidies the connections, but the external power brick and limited integrated routing can still leave clutter to manage.

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

The matte coating can introduce grain and slight image softness; glossy alternatives appear clearer in a controlled dark room.

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

Dark shadow detail can be crushed at high refresh rates or in specific presets, despite the panel’s excellent absolute black depth.

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

Scaling lower-resolution signals is serviceable but not always sharp; the strongest enhancement settings can look artificially processed.

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

Off-axis picture consistency is generally strong for OLED, although some testing finds slight color shifts at extreme viewing angles.

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 revised subpixel layout improves text over older WOLED designs, but visible fringing remains around lettering and flat-color edges.

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

Its gamut and glare control are useful for occasional photo editing, but dark midtones and inconsistent uniformity make precision work harder.

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

Small bright details can look spectacular, but some tone-mapping choices dim or crush highlights and reduce the detail they should preserve.

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

The fourth-generation Tandem WOLED brings meaningful gains in brightness and color, but retains some WOLED uniformity and color-volume shortcomings.

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

Rapid or large frame-rate changes can cause noticeable VRR flicker, especially in dark scenes; anti-flicker settings help but are not a complete cure.

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

USB-C laptop charging depends on Smart PD settings and workload. Reviews range from frustration at low default power to reports of much higher delivery when enabled.

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

PC and console VRR support is broad, though unstable frame rates can reveal gamma flicker and some input-switching quirks.

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

Gigabyte supplies pixel cleaning, logo dimming, shifting and other OLED Care controls. These are helpful safeguards, not a guarantee against wear from static images.

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 small, thin metal base frees room for keyboards and other desk gear without sacrificing much stability.

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

Dark-gray vertical banding, uneven shades and occasional red tints are the most consistently reported panel weaknesses.

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

Fast OLED pixel transitions keep moving edges remarkably free of smearing, ghost trails and overshoot artifacts.

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

The supplied cables, mounting hardware and power accessories support a fairly straightforward initial setup.

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

QHD at 27 inches provides useful desktop space and decent clarity, but cannot match the text and fine detail of 4K.

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

Native QHD looks reasonably sharp in games, while coating grain, scaling and text subpixels prevent the crispness of denser 4K screens.

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

Height, tilt, swivel and portrait adjustments provide versatile ergonomics from a compact metal stand.

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

Cinematic games benefit from dark blacks, striking HDR effects and rich color, although aggressive peaks can mask some subtle details.

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, timers, hardware overlays and configurable shortcuts give this gaming monitor a capable toolkit, even if some extras are niche.

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

Input lag is exceptionally low at high refresh rates, giving clicks and camera movement a responsive, connected feel.

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

HDMI, DisplayPort, USB-C and USB-A give this gaming display a useful mix of connectivity, albeit without a generous peripheral hub.

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.

1440p is a practical match for high refresh rates and midrange gaming PCs, though 4K is noticeably sharper.

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 USB hub and KVM are convenient for basic peripherals, but two downstream ports can feel limiting.

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

Most testers find the thin stand unexpectedly firm, though at least one describes it as flimsy.

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

The matte anti-glare finish reduces mirror reflections and preserves blacks under ambient light. It trades away some of a glossy panel’s crispness.

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

A 280Hz ceiling is fast enough for smooth, competitive play, although the improvement over 240Hz is smaller than the gap to high-end 480Hz-plus models.

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

Wide DCI-P3 and expanded BT.2020 coverage give games, movies and creative work rich color. Proper gamut clamping is important to avoid exaggerated SDR saturation.

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

Standard and gaming-oriented picture presets cover different uses, though the special modes are not necessarily more accurate than well-tuned standard settings.

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

Most assessments recommend this as an unusually capable and affordable OLED gaming monitor; a few give more weight to coating, brightness or uniformity problems.

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

Fast OLED transitions and 280Hz operation deliver excellent motion definition. Higher-refresh premium models still offer incremental gains.

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

The metal base, slim stand and restrained styling give the chassis an unexpectedly high-end impression.

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.

Fast response and low lag help competitive players track motion and place shots precisely. Reaching the full 280fps requires sufficiently fast hardware.

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

Near-instant OLED response times give the screen precise moving detail and excellent high-speed gaming behavior.

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

The OLED panel produces genuinely inky blacks and convincing depth without the gray glow associated with conventional LCD backlights.

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

Console support includes 120Hz options and 4K downscaling, with HDMI bandwidth and chroma-format tradeoffs to consider.

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.

Dark-gray banding and patchiness can interrupt otherwise smooth shading. Pixel maintenance may help but does not consistently eliminate it.

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

The KVM makes sharing a keyboard and mouse between two connected computers convenient, with input switching designed around multi-device desks.

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.

Larger bright scenes can trigger dimming, especially in more aggressive brightness modes. The more uniform SDR settings are less distracting for desk work.

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

SDR brightness is a major strength for this OLED generation, and small HDR highlights can be dazzling. Broad bright scenes and specific modes show more modest results.

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 can drive the native high-refresh mode with compression, while turning compression off forces significant signal compromises.

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

The joystick-led menu and software controls are generally easy to navigate, but placement of APL controls and some locked options frustrate.

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

Games and video look bold and dimensional thanks to strong contrast and rich color, though individual units and presets can have visible tonal faults.

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

The passive design avoids the distraction of an audible cooling fan.

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.

At least one test found VRR could stop working when changing HDMI and DisplayPort inputs, reducing confidence in seamless mode switching.

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

Dark-scene adjustment can uncover otherwise hidden shadow details, although aggressive settings lift blacks and alter the intended image.

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

Per-pixel OLED control gives dark scenes exceptional contrast and an immediate transition from black to bright highlights.

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.

The newer Tandem panel delivers much greater saturation and color purity than earlier WOLEDs. Very bright saturated HDR colors can still trail QD-OLED alternatives.

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 generally keep motion smooth, with some settings designed to tame frame-rate swings. Adaptive sync still shares OLED’s potential for visible flicker.

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.

Deep OLED blacks and impressive highlights make HDR gaming particularly striking. Full-screen brightness, dark-scene detail and preset accuracy are less consistent.

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

Factory color accuracy ranges from good to merely fair depending on preset and sample. Grayscale tint, dark gamma and calibration effort are the main reservations.

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

Three-year coverage that includes OLED burn-in offers welcome reassurance for a panel with known static-image wear concerns.

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

HDMI 2.1 inputs support high refresh rates but use a limited 24Gbps link rather than full bandwidth; DSC is needed for the richest 280Hz signals.

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

Tandem OLED brightness and fast gaming performance arrive at a comparatively approachable price, making value one of the strongest selling points.

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

HDR tracking varies substantially by mode; the conservative preset is generally more faithful, while high-output options alter highlight or midtone levels.

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

Color-space presets, gamma options and RGB adjustments offer useful tuning. Some emulation modes lock controls, and correcting darker tones can take experimentation.

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

HDR adjustment controls is useful under the described circumstances, though performance depends on the chosen settings.

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

Dark gamma and black crush appear in some factory modes. Changing gamma or choosing a more accurate color-space preset can recover detail.

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

The 27-inch size is comfortable for QHD gaming and desk use, balancing workspace with manageable system demands.

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

Slim, largely flush bezels make the picture dominant without an overly chunky bottom edge.

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

The slender metal stand and stable construction earn praise, although one review found the assembly rather light and flimsy.

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

Brightness controls, low-blue-light alternatives and flash dimming can make long or dark-room sessions easier on the eyes, though flicker-sensitive users may still notice OLED behavior.

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

Slim bezels, a low-profile base and restrained metal accents make the design neat and unobtrusive. Some find it plain rather than stylish.

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

Individually lit pixels prevent the halos and blooming found around bright objects on many locally dimmed LCD screens.

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

The monitor works with modern gaming PCs and several other source types, but particular ports and modes impose bandwidth limitations.

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

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

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

Multiple HDR presets offer a useful choice between accuracy and impact. The most aggressive 1500-nit options introduce saturation or tone-mapping compromises.

The headphone output is a welcome fallback when the modest built-in speakers are not sufficient.

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

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

An external power adapter can be replaced without opening the screen, though it adds a separate item to cable management.

The black-frame-insertion feature can make 120Hz motion look noticeably clearer, at the cost of brightness and simultaneous VRR operation.

OLED removes the need for conventional overdrive tuning and avoids the overshoot artifacts seen on some LCDs.

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

Brightness values and certain settings are not always remembered independently when toggling display modes, creating extra adjustments.

Pixel refresh can reduce some visible banding, although it does not always fully correct it; cleaning cycles are also part of OLED protection.

The thin, relatively light assembly is easy to position and move, even if it feels less substantial than some heavier designs.

A conventional replaceable mains lead is easier to manage than a proprietary built-in connection.

One owner reports that Windows HDR does not automatically revert to SDR as expected, requiring a manual toggle between games and desktop.

The speakers are passable for basic listening but sound thin and lack bass; external audio is the better choice for music or gaming.

Speaker volume control has useful range for quiet evenings as well as ordinary daytime listening.

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

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

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

APL Stabilize offers a choice between steadier brightness and punchier highlights. Higher settings can produce noticeable luminance shifts as on-screen content changes.

Display Stream Compression enables full refresh rates over limited-bandwidth inputs. Users who want compression disabled face lower refresh or color-format ceilings.

A critical account objects to the HDMI 2.1 label because the ports lack full bandwidth and need compression for certain high-refresh formats.

Self-emissive pixels provide precise local control rather than coarse backlight zones, avoiding halos in mixed bright and dark scenes.

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.

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

Gigabyte’s desktop utility is useful for configuration and firmware, with some setup requirements and occasional preference for competing software.

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