Compare Samsung U7900F vs TCL Q77K

Opinions split between pleasingly colorful everyday images and poor laboratory picture performance. Accurate SDR and crisp native 4K help, while muted HDR and gray blacks reveal the budget panel.

Everyday 4K material can look crisp and colorful for the price, but rigorous testing finds obvious weaknesses in brightness, contrast and HDR.

The low, fixed-height feet can leave even a compact soundbar blocking part of the screen. Wall mounting or different placement may be necessary.

The stand leaves around 3.6 inches beneath the screen, enough space for most soundbars without blocking the picture.

Low input lag keeps controls responsive at 60Hz, but blurry motion, restricted VRR and missing high-refresh modes limit serious gaming appeal.

Gaming is the clearest strength thanks to rapid inputs, VRR and high-refresh modes, though fast pixels and dark-game contrast are weaker.

SDR white balance is relatively close to target and becomes very strong after calibration; HDR balance is less consistent.

The initial cool cast and gray inaccuracies are notable, but careful calibration can bring tones much closer to neutral.

Raised blacks, missing local dimming and muted HDR highlights make dark-room cinema look flatter than better TVs.

Dark rooms expose raised blacks and limited HDR punch; it works for casual viewing but disappoints for cinematic contrast.

Low bass is thin and lacks the punch needed for cinematic effects; it is serviceable for ordinary speech and TV.

The speakers lack genuine low-end weight and rumble, leaving music and action effects thin.

The built-in audio is adequate for ordinary shows and speech, with acceptable volume and treble. Thin bass keeps it from sounding cinematic.

Built-in audio handles casual dialogue but lacks rich bass, spaciousness and consistent loudness across sizes.

Out-of-box SDR accuracy is surprisingly respectable for a budget TV, and calibration can improve it further. HDR accuracy is less predictable.

Calibration can bring white balance and gamma very close to target, although some saturated blues remain slightly off.

Local contrast is constrained by the absence of dimming zones, leaving letterbox bars and dark scenes washed out. Some basic depth remains, but this is not a strong dark-room display.

Native contrast is acceptable for the price, yet the lack of local dimming makes dark scenes visibly weaker than better TVs.

Compression blocks and pixelization remain visible in weaker streams, even if fine detail is often preserved.

Compressed videos receive useful smoothing, although finer details may look softened or waxy.

Native 4K and HD conversion reproduce fine textures particularly well in the tested 50-inch sample.

Native 4K scenes look crisp with excellent fine detail; upscaled text and other tiny details are less dependable.

Without independently controlled backlight zones, bright details lift the surrounding blacks. The tradeoff avoids classic dimming halos but leaves scenes looking gray.

There is no zone-by-zone backlight control, so dark areas stay brightened and highlights lack the contrast of Mini LED competitors.

Dynamic, Standard, Eco, Movie and Filmmaker options give users useful choices between punch, naturalness and lower power consumption.

Changing brightness and color-temperature settings can improve dark or flat-looking content significantly.

SDR is the TV’s strongest picture format, with good color accuracy and serviceable HD clarity. Its limited brightness still constrains sunny-room viewing.

Standard content is watchable and sometimes pleasantly colorful, especially when reflections and ambient light are managed.

Screen output is modest in SDR and especially weak in HDR. Even a moderately bright room can expose the lack of headroom.

Both HDR highlights and regular SDR scenes are relatively dim, limiting impact and daytime versatility.

Standard-definition-range colors and skin tones can look convincing straight out of the box. HDR colors are less accurate and sometimes noticeably cool.

Opinions diverge: fine flesh tones and detail can look natural, but uncalibrated color and white balance may be cool or inaccurate.

HDR highlights cannot reach the intensity needed for a convincing high-dynamic-range image. Bright scenes often look flat instead of luminous.

HDR highlights fail to stand out against surrounding scenes, and overall brightness is too low to create dramatic impact.

Dolby Digital—including 7.1-channel Dolby Digital Plus passthrough—works well, though DTS is missing.

Major audio formats pass through from connected external sources, although the same behavior is not guaranteed for every built-in app.

HDR10+ compatibility does not translate into powerful HDR images. Restricted brightness, gamut and black depth make SDR its more persuasive presentation.

HDR format compatibility is broad, but contrast, color volume and brightness are too limited to make HDR particularly convincing.

Slow transitions produce visible blur in fast action, although some reviewers find ordinary 24fps and 60fps clips smooth. It favors calmer viewing over demanding motion.

Assessments vary, but detailed testing finds conspicuous 60Hz blur even as some evaluations praise ordinary motion.

Fast response to controller inputs is a consistent strength and helps games feel immediate despite the slow panel.

Very low input delay makes the Q77K feel responsive in supported console and PC modes.

The set tops out at 60Hz regardless of input resolution, so it cannot provide the 120Hz or higher output expected for modern fast-paced gaming.

Fast PC modes are outstanding value at up to 4K/144Hz or 1080p/288Hz on supported sizes, despite slower 60Hz pixel response.

The 60Hz ceiling rules out 120Hz play at either 4K or lower resolutions. It handles ordinary sources, but smooth high-frame-rate action needs a faster TV.

A native 144Hz panel is exceptional for this price range, though faster input support does not guarantee blur-free motion.

Variable-refresh support stops being useful below roughly 48fps, so slowdowns can still produce visible tearing.

Supported high-bandwidth HDMI inputs cover a broad VRR range, reducing tearing when frame rates dip; the 60Hz ports are less capable.

Unlike the Q7F comparison model, this TV lacks the quick gaming bar for on-screen controls.

A capable game bar provides frame-rate readouts, aiming tools and quick access to VRR, picture modes and latency settings.

Only two HDMI inputs leave little room for a console, soundbar and additional player at once. This is a practical compromise even for a low-cost television.

Four HDMI connections offer good basic connectivity, although not all can carry the highest refresh-rate signals.

VRR is supported but its narrow operational window means tearing can persist at lower frame rates. Compatibility is better than effectiveness.

Wide VRR format and range compatibility keep games nearly tear-free as frame rates fluctuate, especially on the full-speed inputs.

Simple plastic feet are fixed in height and spacing, limiting where the TV or soundbar can sit.

Adjustable stand positions and sturdy feet are practical strengths, although construction varies and the overall set is budget-oriented.

The widely separated feet require a fairly broad furniture surface without an inward mounting option.

Two foot positions on the 75-inch model provide narrower or wider furniture options, a welcome flexibility for a large TV.

Treble is mostly clean and neutral, though the upper range can sound a little bright.

High notes lack detail and contribute to a bright, closed-in sound presentation.

Interpolation can reduce judder or stutter in some passages, but inconsistent timing produces distracting movement in others.

Interpolation can smooth camera pans effectively, but some find motion processing artificial or blurry and prefer it off.

A rear-facing HDMI jack can be awkward to access on a wall, sometimes requiring a right-angle cable adapter.

Rear inputs are generally workable but can be awkward to reach once the television is close to a wall.

The panel cannot produce the full color range used by richer HDR material, so some vivid shades look muted or clipped.

Cartoons and everyday SDR scenes can look lively, but the limited HDR color range prevents deeply saturated highlights from looking rich.

Film signals and 1080i broadcasts can look smooth, but some cable boxes and 60Hz delivery paths still introduce uneven motion. Interpolation does not reliably resolve every case.

24fps movies play without distracting cadence judder, and 1080i film broadcasts also receive strong frame-rate treatment.

An Xbox can force a 1440p signal that the TV accepts at 60Hz, but 120Hz remains unavailable.

Both PlayStation 5 and Xbox gaming support 1440p at 120Hz, providing flexibility between image resolution and speed.

The central picture remains reasonably clean, though faint patches and darker edges can appear on uniform fields.

The tested 75-inch panel showed uneven patches and a pinch mark that could stand out on grass, ice or other broad flat colors.

Saturated HDR gradients can lose nearly all intermediate steps even when other tonal transitions look smooth.

Color and brightness transitions are mostly smooth, though darker gradients can reveal some banding.

Pixel transitions are slow enough to smear rapid movement, a clear drawback in fast games and action scenes.

Pixel response is mixed: high-refresh gaming feels responsive, but dark transitions and 60Hz scenes can be noticeably blurry.

Some videos look punchy and colorful, especially in SDR, but measured saturation and brightness fall short with intense HDR colors.

The Q77K struggles to maintain saturated HDR colors, particularly darker tones, despite acceptable color presentation in standard content.

The speakers have sufficient volume for ordinary rooms, provided ambient noise is not excessive.

Loudness varies by size and source: the 55-inch test struggled in larger spaces, while the 65-inch unit and one video evaluation sounded adequate.

Near-black areas and the center of the screen can look reassuringly even, but gray fields may show darker edges or minor patches.

The tested panel had noticeable uneven gray shading and a pinch mark, so checking a new unit for patches is worthwhile.

Near-black areas are relatively even with little clouding or bleed, despite their elevated black level.

Near-black scenes remain fairly even without obvious vertical bands, though some patchiness and warm spots occur.

Bright objects do not acquire the usual local-dimming halos. The price of that clean boundary is a washed-out black background.

Bright subtitles do not create the usual local-dimming halos, but this advantage comes at the expense of deep blacks and strong highlights.

A complete calibration can produce excellent accuracy, though some color and shadow errors remain.

Calibration is straightforward and can improve white balance and overall color accuracy dramatically.

Some transitions leave faint colored edges, including a red tint around moving skin tones.

Slow dark transitions and variable-refresh overdrive can cause colored trails, overshoot and blurred moving edges.

Proper chroma support helps computer text look clear, although the BGR subpixel arrangement can cause problems in some applications.

The BGR subpixel arrangement can make fine desktop text look less crisp than on a conventional RGB monitor.

Colors shift and fade fairly quickly away from the center seat. A wide sofa arrangement is not an ideal match.

Off-center viewing is acceptable for a VA-style set, but saturation and image depth fade noticeably at steeper angles.

Promotional tiles are built into the home screen and cannot be completely disabled, although personalization can be turned off.

Google TV includes ads and recommendations that cannot be fully switched off, a drawback for people wanting an uncluttered home screen.

Fast action can smear noticeably because of slow pixel response and a 60Hz limit. Some short demonstrations appear smoother than laboratory measurements suggest.

The high refresh-rate specification masks mediocre pixel transitions, especially in dark areas and ordinary 60Hz footage.

Many gradients are reasonably smooth, but highly saturated HDR colors run out of gradation early.

Shaded gradients look mostly smooth, with relatively little obvious banding, although the darker end is less polished.

Backlight dimming introduces PWM flicker, which may bother viewers sensitive to modulation.

Low-brightness settings use low-frequency backlight modulation that may bother sensitive viewers and cause visible image duplication.

Some tests show useful near-black gradation, while SDR crushes dark texture and side-by-side scenes reveal missing details.

Results are mixed: gentle tonal gradations can be reproduced well, yet some near-black areas appear crushed before calibration.

Slow transitions help hide some panning stutter even while sacrificing crispness during fast action.

Motion interpolation reduces stutter effectively on slow pans when enabled, with little variation in timing.

The picture can develop a green tint or lose saturation not far from the center seat.

Colors shift and fade toward the sides; it remains usable for some side seats but looks best head-on.

Bright reflections appear mirror-like and are sometimes spread out by the finish, making overhead lighting difficult to ignore.

Reflections are intrusive on glossy variants, whereas the 85- and 98-inch matte coatings make placement easier near bright lights.

Game Mode delivers quick inputs and automatic low-latency switching, but lacks the advanced frame features of more capable gaming televisions.

Game Mode keeps controls responsive, but it cannot fix flat HDR and blurry pixel transitions in every scene.

Speech comes through clearly at normal listening volumes even though the speakers lack deep bass.

Speech is intelligible at normal volume, making news, sitcoms and casual TV easy to follow without external speakers.

Bright accents often fail to pop and sometimes lose detail entirely. HDR highlight reproduction is a recurring weakness.

Bright details can be lost or appear too dim, making HDR objects look flat rather than luminous.

Blacks tend to look gray rather than truly dark, especially with brighter objects in the scene. This is one of the clearest barriers to a cinematic image.

Without local dimming, blacks look gray or washed out in darker scenes even though the native panel contrast is serviceable.

The shiny surface reflects windows and bright lamps conspicuously. It is not designed to fight direct light.

Glossy models visibly mirror lamps and windows. Matte finishes on the two largest sizes improve reflections but cannot add brightness.

Ordinary HD feeds are watchable and sometimes impressively clean, but small details may remain soft. The result varies from passable in testing to notably positive in hands-on demonstrations.

HD and some lower-resolution material upscale clearly, yet very fine text and textures can become soft.

This direct-lit LCD is highly resistant to permanent static-image burn-in, a plus for long ownership.

As a direct-lit LCD, the screen carries little risk of permanent burn-in from static game HUDs or channel logos.

No cable-routing features are provided to tidy wires behind the panel.

There is no integrated cable-routing system, so wires need to be organized separately.

Older broadcasts and 720p sources remain watchable, especially when treated gently, but they are visibly softer than 1080p or native 4K.

Compressed streams and old video remain watchable, though noise cleanup trades away some fine texture.

Its direct-lit LCD backlight avoids permanent burn-in and is expected to age reasonably well, but a failed LED could disable a large section.

Expected longevity is decent rather than outstanding, with low burn-in risk offset by more vulnerable direct-lit backlight failure behavior.

The absence of HDMI 2.1 bandwidth keeps modern consoles from their highest-refresh options.

Two HDMI inputs on the tested 75-inch unit handle modern 4K high-refresh signals, unlike the two limited 60Hz ports.

The U7900F can feel like a bargain on sale, particularly for uncomplicated streaming. At similar prices to better-equipped competitors, its weak brightness, motion and connectivity make it hard to justify.

The low Costco pricing buys unusually advanced gaming features and large screen options, but picture weaknesses make a cheap Mini LED upgrade worth comparing.

HDMI eARC offers the preferred way to connect a receiver or compatible soundbar without an optical port.

An eARC connection makes it easy to pair a soundbar or receiver and pass compatible surround audio from external devices.

HDR midtones can be tracked reasonably well, but bright content is often rendered darker than intended.

Tone tracking is surprisingly faithful for moderately bright HDR scenes, with a smooth highlight roll-off, yet hardware limits cap the final effect.

Tizen occasionally feels heavy on this entry-level processor, especially when opening apps or moving through menus.

The Google TV interface scrolls smoothly for most interactions and generally feels quicker than expected for a low-cost set.

Some streaming app launches and menu transitions are sluggish on the entry-level Tizen hardware.

Apps and the interface generally load quickly, with occasional brief hiccups during navigation.

Mainstream streaming services and downloadable apps make the platform useful, even though access requires a Samsung sign-in.

Google TV offers a broad range of major streaming services and downloadable apps, making everyday content easy to access.

The shell feels inexpensive, with plastic construction and noticeable rear-panel flex.

Construction is adequate for the price but plastic-heavy. Metal feet are appreciated on the smaller showcased unit, while another sample showed a panel pinch mark.

Three relatively narrow borders help the U7900F look modern, even though the bottom edge is thicker.

Bezels look slim at a glance, but the visible gap between the frame and first pixels reduces the premium effect.

Slim upper and side bezels create a fairly tidy look for an entry-level television.

The slim exterior is appealing for a budget television, although materials and frame details are less refined than premium models.

Despite occasional sluggishness, finding shows and moving through Tizen content remains straightforward.

Signing in to a Samsung account is required for much of the downloadable app and network experience, adding friction for people who want a simple offline TV.

Missing ATSC 3.0 support limits over-the-air broadcasts to older standards rather than next-generation broadcasts.

A varied selection of decorative seasonal and ambient art gives the display an entertaining second purpose.

Automatic Game Mode removes the need to hunt through settings before gaming, keeping input lag low.

Black-frame insertion suffers from mistimed pulses that create duplicate images instead of clearer motion.

The live TV interface includes a useful program guide showing current broadcasts.

Google TV collects shows and suggestions from several services in one home screen, helping reduce app hopping.

Eco picture mode cuts output and power consumption, at the cost of a dimmer image.

TCL’s built-in live TV section loads fairly quickly and expands the selection of no-extra-cost viewing.

The tested 75-inch unit has two full-speed gaming ports rather than four; other sizes may differ, so several high-bandwidth devices require planning.

Basic scaling and stream cleanup are serviceable; more difficult feeds still expose compression artifacts and softness.

Skin tones look pleasing in the more restrained presets, while brighter modes trade naturalness for punch.

The zoom and position controls can expand older low-resolution or non-widescreen clips to fill the display.

Owners and hands-on presenters can be satisfied when the low price and basic purpose are clear. More demanding picture-quality comparisons give it a harsher verdict.

The carton protects the fairly light 55-inch television adequately and is manageable for a single person.

The 55-inch version is light enough for one person to remove from its carton, easing initial handling.

The simple voice remote is functional and pleasant to use, with backlighting an unexpectedly helpful extra.

Backlit buttons and a simple layout make the remote comfortable to operate in the dark.

Native 4K material looks noticeably better defined than soft low-resolution streams.

The largest matte-screen variants reduce mirror-like reflections substantially compared with the glossy smaller sizes.

Dialogue and moderate-volume material sound acceptable through the internal speakers. Bass-heavy scenes benefit from external audio.

The feet align and snap into position easily with no elaborate construction process.

Common VESA mounting options are available, although spacing, port access and handling become important with the biggest models.

Modern consoles can reach 4K at 120Hz on the high-bandwidth ports, with VRR and automatic Game Mode available.

Two high-bandwidth ports on the tested 75-inch set enable 4K/144Hz, making high-frame-rate PC play a major attraction.

Native 4K gaming works at up to 60fps, enough for casual play but below the maximum of modern consoles.

The 55-inch model can reach 240Hz at 1080p, offering a fast mode for PC gamers who prioritize frame rate over resolution.

Larger specified sizes can accept 1080p at 288Hz on supported inputs, an exceptional option at this price tier.

DTS decoding and passthrough are missing, which is disappointing for some Blu-ray soundtracks.

FreeSync Premium Pro helps Xbox and compatible gaming hardware deliver smoother play as frame rates vary.

HDR10, HDR10+ and HLG are supported, but Dolby Vision is absent and the panel cannot make most HDR scenes impactful.

The 75-, 85- and 98-inch models provide substantial screen size for the money, with gaming support rarely found this cheaply.

Snap-in feet and phone-assisted setup make installation relatively straightforward, with a standard remote method also available.

The Costco bundle’s advertised five years of combined coverage and return window strengthen the value proposition, but the extra years are a protection plan, not manufacturer warranty.

T-Exhibition brings attractive looping 4K artwork to the screen, although some selections take a while to load.

There are only basic listening modes, yet the equalizer, balance control and eARC settings cover many simple setups.

Low SDR brightness makes daytime viewing difficult wherever windows or sun hit the screen.

Aiming overlays, shadow controls and a visible FPS counter give gamers quick, practical tools during play.

There is no optical digital audio jack, so older sound systems may need an alternative connection or adapter.

Compatible Samsung soundbars can play alongside the TV speakers, expanding audio flexibility. The feature is not universal across soundbar brands.

Fine for ordinary SDR viewing in a controlled room but too dim to overcome direct sunlight or bright lamps.

The built-in presentation is narrow and thin rather than immersive, particularly with demanding film soundtracks.

Pairing wireless headphones or a compatible soundbar is a useful convenience for quiet or flexible listening.

Google TV is mostly quick and smooth for a budget set, with occasional hesitation during scrolling and app navigation.

A generous selection of picture modes allows different looks for films, sports, games and Dolby Vision content.

A physical microphone switch can fully disable the TV’s hands-free mic for added reassurance.

Voice assistant, casting and compatible smart-home controls add everyday convenience beyond streaming.

The SmartThings app makes phone-based setup and navigation practical and can add spoken commands absent from the physical remote.

Tizen offers plenty of content, apps and connected-device options, but this entry-level version is pared down and can feel sluggish.

Google TV supplies comprehensive apps and a familiar interface, but unavoidable ads diminish the experience.

Game HDR brightness settings may not track the intended presentation reliably, making some scenes too dim.

Hands-free and remote-based voice commands simplify searches and app launches, with a physical mic-off option available.

Using Bixby through SmartThings successfully launches requested apps, providing a useful alternative to the basic remote.

The 85- and 98-inch variants have reflection-friendly matte screens, while smaller models are glossy; refresh ceilings and port arrangements can vary too.

The 55-inch variant tops out at 1080p/240Hz, while listed larger models can reach 288Hz; specifications should be checked by size.

The unusually broad selection of screen sizes makes the model easy to fit into bedrooms, living rooms and secondary spaces.