Compare LG 27GX700A-B vs LG 27GX790A-B

Most menus are familiar, but console users may need a less-than-obvious HDMI input-mode adjustment to unlock 120Hz.

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

Some tested modes under-track highlights or sacrifice detail for brightness, so HDR precision does not always match the panel’s impressive peak capability.

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

The 1440p resolution is easier to drive at high frame rates than 4K, though taking full advantage of 280Hz still calls for a capable gaming PC.

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

It can handle routine photos after appropriate adjustments, but serious editing is less certain because of gamma, white-balance, and color-accuracy concerns.

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

Off-axis quality is generally decent, though one direct comparison found colors wash out faster than on an older LG OLED.

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

The new subpixel arrangement reduces intrusive color edges around text, but small type can still look softer than on a high-resolution LCD.

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.

1440p is practical at 27 inches and less taxing for games than 4K, but fine text is visibly softer than on similarly sized 4K monitors.

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

Two HDMI 2.1 inputs, DisplayPort, USB-A hub ports, and headphones cover straightforward gaming. USB-C and a KVM are missing for more elaborate desks.

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

Game imagery looks crisp, although fine desktop print and the matte coating can reduce perceived detail versus 4K or glossy alternatives.

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

No combined USB-C video-and-power laptop solution means extra cables and separate charging.

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

Per-pixel OLED blacks make dark environments exceptionally deep, including under ambient lighting. Some picture modes lift or crush near-black tones.

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

The matte treatment significantly reduces mirror-like reflections and preserves black depth in bright rooms. The tradeoff is occasional diffuse haze or grain.

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

Several testers noticed brightness flicker when frame rates fluctuated, particularly in dark games. One sample had little obvious flicker, so severity varies.

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

Low input lag makes both PC and console controls feel highly responsive, matching the quick OLED pixel transitions.

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

Rear accent lighting adds some flair and was reported working correctly during hands-on testing.

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

Near-instant OLED response leaves fast motion unusually free of trailing and ghosting in action games.

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

The headphone jack with DTS processing earned a positive listening impression; a separate headset is still needed for sound.

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

The 1440p picture looks sharp for gaming while remaining easier to run than 4K, though it is not the best match for ultra-fine text.

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.

Height, tilt, and swivel flexibility are praised; one comparison finds a glossy LG sibling slightly more ergonomic.

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

Judgments vary sharply: several testers call it a favorite gaming OLED or an excellent sale purchase, while one strongly rejects its HDR tuning and grainy coating.

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

The matte coating is divisive: some see a surprisingly clean image with low glare, while others find its grain and softened highlights highly distracting.

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

At 280Hz, gaming feels notably smoother and motion is clearer than at mainstream refresh rates. A few premium alternatives go even faster.

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

PlayStation support is generally strong, including high-refresh operation from accepted 4K signals. Xbox Dolby Vision is absent, and some console setups require changing HDMI compatibility settings.

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

The clean UltraGear styling and stable stand help it look and feel like a high-end gaming display.

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

The heavy metal stand keeps the screen firmly planted even during competitive play, despite its somewhat bulky appearance.

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

The 280Hz refresh, exceptionally quick pixel response, and low lag make competitive games feel immediate and clear. Even faster esports models exist for players prioritizing refresh above image quality.

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.

Gaming picture modes offer useful flexibility, but their gamma, saturation, and HDR accuracy vary substantially. Choosing the wrong preset can compromise shadow detail.

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

High-refresh PC play is a clear strength, combining GPU-variable-refresh support with low lag and crisp motion.

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

Fast movement stays sharp and readable at high refresh rates, with the near-instantaneous OLED response a consistent gaming highlight.

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

The expanded gamut brings richly saturated colors and strong HDR color coverage, representing a clear improvement over older WOLED generations.

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

Near-instantaneous OLED pixel changes are consistently praised for clear, immediate gameplay.

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

Pixel-shifting protection is useful, but long periods of static taskbars and editing interfaces still warrant care with OLED ownership.

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

Deep blacks and bold light effects make atmospheric adventures immersive, but lower-frame-rate games do not exploit the 280Hz ceiling and HDR can be inaccurate.

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

Gray bands and dirty-screen patterns can be visible, particularly in dim scenes and on dark-mode backgrounds; experiences differ notably across panels.

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

There are no integrated speakers, so audio needs to come from a headset or separate speakers.

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

One take appreciates the compact flat base for small desks, while another finds the heavy stand disproportionate. Placement depends on available space.

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.

Some modes lift shadows to improve visibility while others crush them and lose detail. Calibrating the monitor does not always fully solve the issue.

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

Tweaking HDR settings can improve tracking, yet even after adjustments some dark details and highlights remain inaccurate.

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

HDR tracking is among the biggest drawbacks: modes often brighten the whole image or crush shadows, and adjustments can trade accuracy against spectacular highlights.

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

Menus and current firmware seem functional, though a critical tester felt substantial updates were needed to improve the picture.

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

Accessing 120Hz over HDMI can require manually selecting the proper AV compatibility mode before the option appears.

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.

The fourth-generation Tandem OLED panel often looks brighter than older WOLED monitors, especially in SDR and very small HDR highlights. Not every tested game or HDR setting delivers the expected peak.

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

DTS Headphone:X processing is appreciated as a useful option for headphones connected to the display.

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

There is strong HDR impact and deep contrast, but major disagreement about real-game brightness and accuracy. Very bright settings sometimes overexpose the image or crush dark detail.

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.

True OLED blacks deliver striking image depth and contrast without blooming. Some inaccurate presets alter perceived black detail despite that panel strength.

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

DisplayPort 1.4 handles the native high-refresh mode but lacks the newer 2.1 connectivity found on some premium alternatives.

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.

There is no integrated KVM to share keyboard and mouse between computers. Hybrid desk setups need external hardware or a different monitor.

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

Rich color, perfect blacks, and unusually sharp motion make games visually impressive. Grading inaccuracies, gray bands, and a grainy matte finish can take away some of that impact.

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

SDR sRGB accuracy earns praise from some testers, while others report substantial white-balance and gamma errors. HDR accuracy is especially contentious without careful adjustments.

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

Black Stabilizer can lift visibility or help adjust shadow tones in dark games, although it cannot completely repair underlying HDR tracking errors.

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

The OSD remains familiar and reasonably approachable, with accessible brightness, picture, and OLED-care settings.

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

Brightness behavior varies by scene and setting. Some gaming tests found little distracting dimming, though switching bright windows and larger HDR highlights can expose limits.

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.

Tandem OLED makes bright, saturated colors more convincing than older WOLEDs, but QD-OLED alternatives can still deliver stronger color luminance.

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.

FreeSync and G-SYNC compatibility keep motion fluid across supported PCs. Large frame-rate swings can still produce visible flicker in dark scenes.

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

Gamma is a recurring weakness: brighter-than-intended midtones and some poorly matched presets can require full calibration to correct.

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

Near-black banding can change after the first weeks of ownership, with some panels improving and others still showing it. Unit variation is an important uncertainty.

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

At around the strongest sale prices, fast Tandem OLED performance looks compelling. At launch-like pricing, the omitted docking features and picture compromises are much harder to forgive.

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

HDMI 2.1 supports modern console and high-refresh connections, but one hands-on setup needed an input compatibility change before 120Hz worked.

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

The shorter two-year warranty is a disadvantage beside commonly available three-year OLED alternatives.

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

The coating, improved text presentation, and stable white appearance make longer reading and office sessions less tiring than on some earlier OLED designs.

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

The chassis feels sturdy and thoughtfully built, with substantial support behind the display.

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

The UltraGear styling is smart and premium-looking, with restrained lines and accent lighting; the substantial base may look oversized to some.

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

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

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

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

Bright objects appear against deep blacks without the glowing halos commonly seen around LCD backlight zones.

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

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

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.

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.

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

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

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

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

Running pixel-clean cycles may soften gray-band artifacts on some Tandem OLED panels, but they are not a guaranteed cure.

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

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.

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.

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

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

The lack of Dolby Vision limits Xbox HDR flexibility compared with monitors that support that format.

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

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

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

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

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