Compare LG C6 vs Samsung S90H

The C6 delivers a crisp, colorful, high-contrast image that looks excellent across movies, sports, streaming, and games. Standard-size models are refined rather than revolutionary, while the larger tandem-panel versions look even more striking.

Picture quality is a major strength, with deep OLED contrast, rich color and crisp detail repeatedly standing out. The matte screen and some default modes can soften or exaggerate the image, but the core panel performance remains highly regarded.

The brighter panel makes ordinary daytime viewing practical, but direct light and dark scenes can still be difficult because of reflections.

Bright-room performance is unusually strong for OLED because reflections are suppressed and brightness remains useful even with windows or overhead lights present.

Bright full-screen scenes trigger noticeable automatic brightness limiting, so sports and snow-heavy content can look dimmer than small HDR highlights suggest.

Full-screen brightness falls as OLED protection engages, but the sustained result is still described as competitive for the class.

Built-in audio is improved and often clearer than expected, but standard-size models still benefit greatly from a soundbar. The 77-inch tandem model can sound surprisingly loud and immersive.

Built-in sound is better than expected for such a slim OLED, especially in Amplify mode. It still cannot match a dedicated soundbar for scale and low-end weight.

The presentation can sound wider and more precisely mapped than older C-series TVs, yet standard models still feel narrow beside a dedicated sound system.

Amplify mode opens the presentation noticeably, creating a wider and more involving soundstage than the default setting.

Deep blacks, rich contrast, and accurate Filmmaker Mode make the C6 excellent for nighttime viewing. A few units need minor near-black adjustments.

In evening and dark-room viewing, the OLED panel delivers the deep blacks, contrast and depth that home-cinema buyers expect.

AI Picture Pro can remove visible noise while preserving fine detail, making compressed or lower-quality material look cleaner.

Noise handling is restrained rather than aggressive, reducing source flaws without wiping out film grain or fine texture.

The C6 makes a clear brightness jump over the C5, creating more impactful sunlight, clouds, reflections, and specular highlights. Full-screen brightness remains more limited than small-window peaks.

HDR brightness is strong enough to make highlights pop and handle lit rooms well, though it trails the S95H and can vary by screen size.

Filmmaker Mode produces neutral whites and accurate grayscale tracking, improving on the greenish tint seen in some older C-series models. HDR can run slightly cool on certain samples.

White balance is strong in accurate modes, with only small residual errors. Default Standard settings can skew much cooler than the mastering target.

Brightness is unusually strong for a midrange OLED, with HDR highlights that can exceed 1,400 nits on standard models and go beyond 2,000 nits on tandem-panel versions. It still cannot fully overpower harsh direct light.

Peak brightness is strong for a midrange OLED and gives HDR highlights real impact, though results vary by size and it remains below Samsung’s flagship models.

Colors are vivid yet natural in the best picture modes, with several tests showing near-reference accuracy straight from the box. Some HDR and gaming modes trade precision for extra punch.

Color can look highly natural and accurate in the better picture modes, especially Filmmaker Mode. Standard and AI-heavy modes can push skin tones or whites too cool or warm.

The standard 42- to 65-inch models use an improved WOLED design, while select larger and 48-inch versions receive more advanced tandem OLED hardware. That split creates meaningful performance differences between sizes.

OLED remains central to the S90H’s appeal, delivering self-emissive blacks, strong contrast and fast gaming response. The move away from QD-OLED in some sizes is the main tradeoff.

Bass is tighter and more controlled than on the C5, but deep low-end impact remains limited on standard models.

Bass has some useful weight, but deep low frequencies remain limited and a soundbar adds substantially more impact.

The C6 is one of the strongest gaming TVs available, combining superb picture quality, low latency, full-featured HDMI ports, and smooth VRR performance.

Gaming performance is a standout, combining 165Hz support, VRR, low lag and excellent OLED contrast across consoles and PCs.

Pixel-level lighting produces superb contrast, with bright highlights standing cleanly against dark backgrounds and plenty of depth in cinematic scenes.

OLED contrast is a standout, pairing near-perfect blacks with bright highlights for a deep, dimensional image in movies and games.

HDR is a major strength, combining bright highlights, deep blacks, strong color, and confident tone mapping. The experience is especially impressive in dark or controlled-light rooms.

HDR is consistently praised for impactful highlights, deep blacks and rich color. The strongest results come from better picture modes rather than the most aggressive defaults.

Filmmaker Mode is impressively accurate out of the box, with several measurements landing close to reference targets. Most buyers can get a natural, creator-faithful image without professional calibration.

Accuracy is strongest in Filmmaker-style settings, where skin tones, grayscale and source intent look convincing. More aggressive presets can trade that fidelity for extra brightness and punch.

Sports, films, and games generally look smooth and controlled. The recommended Cinematic Movement setting reduces judder without creating an obvious soap-opera effect.

Motion is strong once settings are dialed in, with clean fast action and few artifacts. Default or automatic smoothing can be less natural.

Game Optimizer and Boost mode deliver exceptionally low latency, with 4K/60 results around 9ms and 120Hz results near 5ms in several tests.

Input lag around the 9ms range at 4K/60Hz is repeatedly described as exceptionally responsive for gaming.

Included clips and guides keep power and signal cables tidy around the central stand.

Cable management is a minor weakness, with reviewers wishing for more built-in routing and cleanup options.

The glossy screen can produce strong mirror-like reflections from windows and lamps. Indirect reflections are manageable, but placement matters in bright rooms.

Reflection control is exceptional: direct and indirect light is heavily diffused, making the screen unusually usable in bright rooms.

DCI-P3 coverage is essentially complete, and tandem-panel versions expand wider-gamut performance further. HDR colors look rich and varied without usually appearing overdone.

The S90H covers mainstream DCI-P3 material very well, but WOLED samples show narrower BT.2020 coverage and less extreme color punch than QD-OLED alternatives.

Cinematic Movement is effective at smoothing pans while preserving a natural film look. Stronger processing is rarely necessary.

Interpolation is useful when kept moderate, but stronger or automatic settings can introduce obvious soap-opera effect and unnatural motion.

Voices and midrange are usually clean at normal levels, but one 48-inch model introduced distortion as volume increased.

Low frequencies can introduce a little distortion when pushed, particularly as the built-in speakers approach their bass limits.

Standard-size models have modest output, while the 77-inch version can play surprisingly loud without immediately losing clarity.

The speakers can lose composure when pushed hard, so demanding scenes at high volume expose the limits of the slim chassis.

The thin panel looks excellent on a wall, but larger sizes are heavy and delicate enough to justify professional installation.

The thin panel looks wall-mount friendly, but the thicker rear electronics section can leave a visible gap at the edges.

Glare control is weaker than on flagship anti-reflective OLEDs and some matte competitors. Direct sunlight is the main problem.

The matte Glare Free coating is one of the S90H’s defining strengths, dramatically reducing glare. The tradeoff is slightly raised blacks or reduced perceived crispness in some conditions.

With the right TruMotion setting, slow camera pans look much smoother and more cinematic without obvious artifacts.

Judder can show up at default settings, but modest custom adjustments clear it up without forcing an overly smoothed look.

Most samples were clean across normal brightness levels, but one retail unit showed a visible green glow near the bottom edge and some dark-gray vertical banding.

Uniformity is very clean for an OLED, with no meaningful hot spots or distracting near-black inconsistencies reported on tested samples.

The standard WOLED panel covers a broad HDR range, but very bright saturated colors can look slightly washed because of the white subpixel.

WOLED versions lose some high-brightness color intensity compared with QD-OLED, most noticeably in demanding wide-gamut HDR material.

AI Sound Pro keeps speech intelligible during action scenes, though one aggressive clarity mode made voices unnaturally loud and weakened the rest of the mix.

Dialogue stays clear and naturally placed in most scenes, with voice-enhancement processing available when room noise competes.

AI search can identify content correctly but sometimes fails to launch it, while simpler voice searches generally perform better.

Search is uneven: AI-enhanced search can find content, but the lack of a straightforward app-store search can make simple tasks frustrating.

Dark scenes usually retain fine textures and background objects, though a few units showed black crush or slightly raised near-black tones that benefited from adjustment.

Shadow detail is the main dark-scene weakness: some presets bury information near black, although picture controls can recover part of it.

OLED’s fast response can expose stutter in low-frame-rate movies, although interpolation reduces it. Broadcast and fast-edit content generally avoids micro-stutter.

OLED stutter can appear in some motion settings and slow pans, though several impressions describe it as subtle rather than broadly distracting.

The Alpha 11 Gen 3 processor improves brightness, detail, noise cleanup, and menu speed. Some optional AI remastering modes are too aggressive and are better left off.

Samsung’s processor is capable and often excellent at detail, upscaling and cleanup, but some AI modes can over-brighten or cool the image and are better disabled for accuracy.

Opinions vary by region and model: some find the slimmer Magic Remote useful and responsive, while others criticize its lightweight plastic feel.

The solar/USB-C remote is light and convenient, but minimalist controls are not universally loved.

The new processing greatly reduces visible banding and dark-scene dithering. A few samples still showed faint vertical bands in very dark gray content.

Banding is kept to a minimum in both test material and real content, helping color transitions look smooth.

The C6 offers deep manual controls, AutoCal support, multiple accurate presets, and reset options. Enthusiasts can fine-tune grayscale, tone mapping, and white balance extensively.

Phone-assisted Smart Calibration is convenient for quick tuning, though it is not a substitute for a full professional calibration.

Recommendations range from useful and sensible to generic and poorly personalized. The feature may improve as it learns viewing habits.

Personalized suggestions can work surprisingly well after some use, although recommendation features are not central to the TV’s appeal.

Game Optimizer preserves strong HDR impact and provides quick access to useful controls. Some samples needed tuning, and one 48-inch unit showed reduced color saturation.

Game Mode stays highly responsive and preserves strong picture quality, making it suitable for competitive and cinematic games alike.

Panel hardware varies by size: standard WOLED models are excellent, while tandem OLED versions deliver brighter, richer performance.

The OLED panel delivers excellent fundamentals, but panel configuration matters: WOLED versions give up some color volume versus QD-OLED variants while retaining strong brightness and contrast.

App shortcuts, the pointer, and a customizable heart button are convenient, but the missing conventional mute button frustrates some users.

The compact layout omits useful dedicated controls such as an input button, pushing more actions into onscreen menus.

OLED blacks are generally deep and inky, but a few samples showed raised blacks or crushed near-black detail before adjustment. Small setting changes usually restore the expected depth.

Black levels are excellent in dark rooms and create the depth expected from OLED. Strong ambient light can lift blacks slightly because of the matte anti-glare treatment.

The move from 144Hz to 165Hz is a useful upgrade for PC players. One test found intermittent flicker and softness at 165Hz, while 120Hz remained more stable.

High-frame-rate gaming is a core strength, especially on PC where the panel can run up to 165Hz.

webOS 26 may require an LG account and acceptance of terms before built-in apps can be used, an unacceptable restriction for privacy-conscious buyers.

Using built-in streaming apps requires a Samsung account, and the associated permissions/setup flow can feel intrusive or tedious.

HDMI VRR, FreeSync, and G-SYNC support keep gameplay smooth and largely tear-free. Occasional flicker was reported in demanding PC use.

VRR is viewed as a strong gaming feature, smoothing frame-rate changes across supported consoles and PCs.

HD, 1080p, and even DVD material look cleaner, sharper, and more dimensional than expected. The new processor improves edges and textures without usually making content look artificial.

Upscaling is one of the S90H’s clearest strengths, making HD and even DVD material look cleaner and more detailed without excessive artificial sharpening.

Large home-screen banners and screensaver promotions are distracting on a premium TV. LG at least allows some advertising to be disabled.

Ad behavior is inconsistent across impressions: one interface showed no top banner, while others criticized Samsung TV Plus autoplay and persistent promotional content.

The self-emissive panel keeps halos around bright objects to a minimum, delivering clean high-contrast edges without the blooming common on Mini LED sets.

Bright objects stay clean against dark backgrounds, with OLED’s pixel-level control eliminating the blooming seen on many backlit TVs.

Uniformity testing found little to no dirty-screen effect during normal viewing, which helps sports and panning shots look clean.

Test patterns showed no distracting dirty-screen effect, vertical banding or vignetting on the evaluated sample.

Nvidia G-SYNC compatibility helps maintain clean, tear-free motion for PC gaming.

Official G-SYNC compatibility broadens the S90H’s appeal to Nvidia PC gamers and complements its 165Hz panel.

LG’s Game Optimizer remains one of the most useful dashboards for adjusting latency, VRR, HDR, and genre-specific settings on the fly.

Samsung’s Game Bar is particularly useful, putting refresh, HDR, genre and aiming controls within quick reach during play.

Color transitions are notably smoother than on the C5, with posterization mostly confined to extreme torture-test scenes.

Gradients are handled cleanly with little visible banding, including difficult skies, dark scenes and streamed material.

All four HDMI inputs support the full gaming feature set, a major advantage for households with multiple consoles and a soundbar.

All four HDMI ports are full-bandwidth HDMI 2.1, a strong advantage for multi-device gaming setups.

Four HDMI inputs provide ample room for consoles, media players, and an eARC sound system.

Four HDMI inputs give the S90H enough wired flexibility for multiple consoles, players and audio gear.

Lower-resolution streams and discs receive useful cleanup and added clarity, though very soft or low-bitrate sources still cannot be made to look truly 4K.

Older and lower-resolution sources hold up surprisingly well, with processing that preserves texture while avoiding heavy-handed cleanup.

Fast action remains crisp with minimal ghosting or edge artifacts, especially in gaming and sports.

Fast gaming and sports motion stays clear, helped by OLED response and high refresh rates.

The native 120Hz panel supports VRR up to 165Hz, giving PC gamers more headroom than the C5.

The 165Hz ceiling is a major gaming upgrade for capable PCs and is repeatedly praised as a premium feature.

Near-instant OLED response keeps gaming motion exceptionally clean and responsive, though it can make low-frame-rate stutter more visible.

Pixel response is extremely fast, giving fast-paced games an immediate, clean feel with little blur.

Home Office and wireless mirroring connect easily and turn larger C6 models into useful oversized displays for work.

Screen mirroring through AirPlay or Miracast is described as quick and easy to use.

The central pedestal is attractive and furniture-friendly, though its angle can complicate soundbar placement and it does not swivel.

The stand is functional and can be sturdy once assembled, but its plastic cover, feel and assembly quality draw mixed reactions.

The pedestal feels sturdy and secure once assembled.

Once installed, the feet hold the TV securely and provide a stable base.

The central base has a sensible footprint that fits more furniture than wide-set feet.

Closely spaced feet make the S90H easier to place on narrower furniture than many large OLED rivals.

Color and contrast remain consistent from wide seating positions, making the C6 a strong choice for group viewing.

Off-axis viewing is excellent, with color and contrast holding up well across wide seating positions.

Users can disable some ads, but mandatory account and data-sharing terms make the smart platform feel invasive to privacy-conscious owners.

Local, privacy-focused AI processing drew praise, and privacy choices are accessible in the interface.

Google Home, Matter, and LG device control are supported, but assistant behavior can feel fragmented compared with a full Google TV ecosystem.

SmartThings integration is useful for connected-home control and works especially smoothly inside Samsung’s ecosystem.

Most major streaming and catch-up services are available, although regional omissions such as Discovery+ or Freely may matter to some buyers.

Major apps are broadly covered, though regional gaps such as iPlayer at review time keep the selection from being flawless.

Popular services are broadly covered and usually deliver Dolby Vision and Dolby Atmos correctly.

Core streaming services are well supported and run smoothly, with only isolated regional omissions noted.

Native HDR tone mapping preserves highlight detail well, but SDR-to-HDR remastering is inconsistent and can add harsh edges, cool tones, or an artificial look. PC HDR also showed mapping bugs on one 48-inch sample.

Tone mapping generally preserves bright highlights and dark detail well. Active mapping can add useful brightness or shadow visibility, though stronger settings may sacrifice some fine highlight detail.

Menus and apps are generally quick and smooth once the TV is running. One large model took 20 to 30 seconds to complete a cold boot.

The updated Tizen interface feels quick, with fast app launches and fluid navigation through major sections.

Basic voice search can work well, but command recognition and AI responses are inconsistent. Copilot and hands-free “Hey LG” behavior felt unfinished on one unit.

Voice control handles basic requests but can be inconsistent, particularly when asked to launch specific content in a named service.

webOS 26 is fast, feature-rich, and easy to navigate, with strong app and gaming support. Mandatory account terms and advertising substantially weaken the experience for privacy-conscious buyers.

Tizen is faster and better organized than prior versions, but opinions split over clutter, ads and Samsung-centric behavior.

Apps load quickly and are well optimized, though one early sample had a temporary BBC iPlayer launch problem.

Apps open quickly and the interface shows less lag than older Samsung software.

The faster processor makes settings and navigation feel snappy, with useful quick menus that avoid interrupting playback.

Menus and settings generally respond quickly, making inputs, apps and gaming controls easy to reach.

Dolby Vision content looks vibrant, accurate, and cinematic, making it the preferred premium HDR format on the C6.

Samsung’s lack of Dolby Vision is the most repeated format complaint. Some reviewers consider it minor, especially for console gaming, while others see it as a reason to prefer LG or Sony.

Atmos decoding is included, but standard models lack the height and scale needed for truly immersive effects. A soundbar remains the best route to cinematic audio.

Dolby Atmos playback contributes to a surprisingly capable built-in audio presentation and works with the TV’s wider Samsung audio ecosystem.

Stand assembly, app pairing, and initial configuration are generally straightforward, although the thin panel requires careful handling.

Physical assembly and SmartThings-assisted setup can be very easy, but mandatory-account and permission screens make the software setup more frustrating for some.

The C6 offers excellent performance for a midrange OLED, but launch pricing is difficult to justify while discounted C5 models remain available. Value improves substantially as prices fall.

Value is generally strong when the S90H is discounted, especially relative to the S95H, but cheaper S85H/S90F and LG alternatives can be more compelling if glare control is not essential.

Dolby Vision, HDR10, and HLG are supported, but the continued absence of HDR10+ keeps the format lineup from being complete.

The S90H handles HDR10-family content well, but the continued absence of Dolby Vision remains a meaningful format limitation for some movie viewers.

Console gaming at 4K/120 and PC gaming up to 4K/165 are both handled smoothly, with strong HDR and responsive controls.

The S90H is positioned as a high-end 4K gaming display, with enough bandwidth and refresh capability for modern consoles and powerful PCs.

Apple AirPlay 2 makes it easy to send media from an iPhone or other Apple device.

AirPlay works as part of the TV’s straightforward casting options, making Apple-device sharing quick and easy.

AirPlay, Google Cast, Miracast, and Auracast provide broad wireless sharing options across phones, tablets, and computers.

Casting is easy from phones and computers, with support that covers both Apple and Miracast-style workflows.

GeForce Now, Xbox Cloud Gaming, Amazon Luna, and LG’s gaming portal make controller-only gaming easy without a console.

Gaming Hub is a strong smart-platform feature, bringing Xbox, GeForce Now, Luna and controller support directly to the TV.

AMD FreeSync Premium works as part of a comprehensive VRR package, supporting smooth PC and console play.

FreeSync support is a clear plus for AMD-based gaming, helping deliver stable, tear-reduced play at variable frame rates.

The HDMI 2.1 implementation is unusually complete, with full-bandwidth gaming features available across all four inputs.

Full-bandwidth HDMI 2.1 connectivity is a strong point, supporting modern high-refresh gaming features without forcing buyers to choose a single premium port.

Broadcast setup works, but US models lack ATSC 3.0, which limits access to newer over-the-air standards.

The tuner is functional for standard broadcasts but lacks ATSC 3.0/NextGen TV, a notable omission at this price.

The lineup covers compact 42-inch through large 83-inch screens, but panel technology and performance differ significantly by size.

A broad 42- to 83-inch range gives the series options for desks, bedrooms and large living rooms, though panel behavior can differ by size.

The television itself feels premium and well made, even when the included remote does not.

The panel and chassis generally feel solid and premium, though some stand assembly experiences feel flimsier than the TV itself.

The ultra-thin, nearly borderless chassis looks premium and fits easily into modern rooms. It is familiar rather than dramatically redesigned.

The slim, understated OLED design is widely liked and keeps attention on the screen rather than decorative framing.

The panel is nearly bezel-free, giving the image most of the front surface and creating a clean, immersive look.

Bezels are thin enough to disappear during viewing, reinforcing the clean all-screen look.

Long-term reliability is not established, and one retail sample showed a green edge glow. Early software and gaming bugs also suggest some launch-period quality risk.

All major current consoles can run at their 4K/120 ceiling through the C6’s fully capable gaming ports.

Google Cast is built in and joins AirPlay and Miracast for easy wireless sharing.

The lack of DTS is a drawback for disc-based home theater, forcing DTS material to fall back to PCM.

The eARC connection makes it straightforward to send high-quality audio to a soundbar or receiver.

HDR10+ remains unsupported, which limits format flexibility for some streaming and gaming content despite otherwise strong HDR capabilities.

Bluetooth hearing devices can operate simultaneously with the TV speakers, making shared viewing more flexible.

Simultaneous audio through the TV speakers and Bluetooth hearing devices is especially valuable for mixed-hearing households.

Ambient and Daily Board features are clever but can become annoying when they wake or surface information more often than wanted.

ALLM integrates cleanly with the broader gaming suite, automatically enabling responsive settings for compatible consoles.

The default energy-saving mode reduces brightness enough that several users prefer to disable it, trading lower power use for better picture quality.

Overall sentiment is strongly positive: the S90H is repeatedly described as a well-rounded OLED with standout gaming and bright-room performance despite a handful of platform and format compromises.

Text rendering on tandem-panel sizes has drawn complaints about reduced sharpness, a concern most relevant to close-up PC or monitor use.

Slim construction, relatively low weight and smaller size options make the S90H flexible for bedrooms, desks and secondary gaming setups.

The Magic Remote pointer and navigation controls respond well, making text entry and menu movement faster.

The 4K panel looks especially sharp at the 48-inch size, making it well suited to large-screen desktop and gaming use.

VRR extends up to 165Hz for PC gaming while fully covering the 120Hz ceiling of current consoles.

Bluetooth audio can play alongside the TV speakers, a valuable option for hearing aids and mixed-listening households.

Bluetooth 5.3 and Auracast contribute to a comprehensive wireless setup for speakers, controllers, and other accessories.

Early firmware and PC-gaming bugs may improve through updates, but several issues remained unresolved at launch.

LG’s assistant, Gemini, and Copilot add voice and AI features, but their usefulness and reliability remain inconsistent.

Wireless results conflict by region or model: one review found Wi-Fi 6E, while others reported a downgrade to Wi-Fi 5. Wired Ethernet is a safer choice where maximum stability matters.

The small power connector is well suited to cleaner, lower-profile wall installations.