Compare Samsung U7900F vs Samsung 100QN80F

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.

The massive screen makes games and bright HDR look exciting, but measured picture quality trails comparably sized rivals. Weak blacks, blooming and motion blur are the main compromises.

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

Elevated panel accommodates most soundbars.

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

Bright HDR highlights deliver satisfying punch on the 100-inch panel. Its brightness is a genuine asset, although higher-performing rivals can get brighter.

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

HDR films and shows look impactful.

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

Indirect daylight is manageable; direct glare is not.

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

SDR brightness is especially strong, and HDR highlights stand out. Reflective glass prevents that power from fully solving direct-glare problems.

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

Four full-bandwidth HDMI 2.1 ports, low input lag and broad VRR support are strong assets. However, dark-object blur and gaming HDR tone-mapping issues limit competitive play.

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

Mini LED improves the impression of contrast, yet the 100-inch panel struggles to control bright zones precisely. Visible halos around highlights and subtitles are a substantial weakness.

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.

Contrast impressions range from solid to mediocre. Detailed measurements found raised blacks that reduce depth in dark scenes.

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

DTS incompatibility is a meaningful passthrough weakness.

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

Raised blacks and visible halos reduce the drama of dark-room movies. The 100-inch panel does not deliver the precise dark-scene control its size might suggest.

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

SDR pictures are praised for ample luminance.

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

HDR accuracy is only middling before adjustment.

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

Good pre-calibration SDR white balance.

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

Deep bass reproduction is limited.

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

Color can look impressive with little adjustment, particularly in SDR. HDR color accuracy is weaker, and calibration helps more than the factory settings alone.

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

Picture controls are more accessible.

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

Overall built-in sound is acceptable.

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

Reduction of compression artifacts softens detail.

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.

Gaming demos found movement smooth, but detailed testing revealed pronounced dark-pixel smearing, especially at 60Hz and 120Hz. Fast action is less clean than the refresh-rate specification suggests.

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

Controls respond quickly across formats.

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

Everyday navigation is easy.

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

Low-frame-rate compensation is valuable.

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 full-capability inputs are useful.

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

Live frame-rate monitoring is useful.

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

Rear grooves help tidy wires.

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

Color gradients are nearly flawless.

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.

Up to 4K/144Hz and low input lag appeal to PC players, but detailed motion testing reveals dark-transition blur even at high refresh rates. Speed on paper is not the same as crisp action.

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.

High refresh adds smoothness.

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

VRR operates well over a broad range.

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

Bright objects against dark backgrounds can develop obvious halos and expose the dimming zones. This especially affects subtitles and dark movie scenes.

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

Simple feet adequately support this large TV.

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

Glare impressions vary sharply: early demos praised the treatment, while direct testing found distracting mirror-like reflections. Bright lights and windows opposite the screen are a concern.

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

Backlight-zone changes cause little flicker.

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

Hands-on impressions of glare reduction are positive, but direct measurements find reflections distracting, especially in darker scenes. Lighting placement is important.

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.

Movies play without 24p judder.

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

Banding is very effectively controlled.

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

Dimming improves otherwise uneven blacks.

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

Dirty-screen artifacts can distract in sports.

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.

Some early viewing praised the blacks, but detailed testing found a bluish glow and elevated dark tones. The problem is most apparent in dark rooms.

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

HDR colors are reasonably lively, but vivid SDR colors can fade in very bright scenes. Color range also trails some competing Mini LED sets.

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.

Basic setup avoids login but adding apps requires an account.

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

Gray uniformity is criticized as disappointing.

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

1440p high-refresh console input works well.

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

Calibration results can be excellent but the process is awkward.

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

Feet themselves are straightforward to attach.

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

Dialogue weakens at the loudest setting.

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

Even simple scenes show processing artifacts.

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

BGR subpixels may hurt PC text.

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

4K resolution imposes some close-up softness at 100 inches.

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

Shadow transitions smear heavily, making moving dark objects hard to distinguish. The large panel is not ideal for motion-sensitive players.

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

Protective packaging complicates removal.

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

Wide legs can challenge existing furniture.

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

Gaming mode crushes shadow details.

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

Strobing is constrained and creates double images.

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

Game Mode contrast improves slightly, though other gaming weaknesses remain.

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

Recessed inputs are inconvenient near the wall.

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

Slow dark-to-bright transitions impair responsiveness.

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

HDR colors remain fairly lively, though very bright shades desaturate. SDR wide-color reproduction fades more noticeably in bright scenes.

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

Frame interpolation is ineffective and artifact-prone.

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.

Upscaled sources look sharp, with some missing fine detail.

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

Substantial off-axis color errors are visible. Side viewing loses some saturation.

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

Color washes out and changes hue when viewers move off-center. A large group spread across the room will not see a consistently accurate image.

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.

Big-screen gaming package is enthusiastically endorsed. First impressions are very positive.

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

System ads cannot be fully removed.

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

Huge 4K image looks a little soft up close.

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

Noise cleanup comes with detail loss.

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

HDMI 2.1 implementation is extensive.

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

Fast 4K-capable HDMI inputs strengthen gaming.

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

HDR10+ is supported but Dolby Vision is not.

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 100-inch panel is criticized as overpriced beside brighter TCL and Hisense alternatives. Launch-period previews were more optimistic, so the deal depends on the actual sale price.

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

Initial setup is uncomplicated.

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

Missing DTS is explicitly criticized.

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

Menus move promptly.

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

General brightness tracking is fairly close, not perfect.

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

Essential streaming apps are available.

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

Tizen earns praise for speed and straightforward navigation. Its familiar smart features work well, although ads remain part of the interface.

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

Loss of proper HGIG makes HDR game calibration difficult.

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

Solid build despite the plastic construction.

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

Rear styling gets praise.

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.

Modern high-refresh console formats are well supported.

Broad gaming format compatibility includes 4K at 144Hz.

Dolby Vision gaming compatibility is absent.

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

Excellent Xbox format compatibility includes FreeSync.

The giant panel is appealing, but its actual price is hard to justify next to better-performing 98- and 100-inch alternatives. Earlier previews were more optimistic about its value.

Generated wallpaper feature feels immature.

Automatic mode selection removes a gaming nuisance.

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

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

Broad VRR compatibility includes PC formats.

All four HDMI ports offer full 48Gbps bandwidth, so game consoles and PCs can share the TV without being assigned to specific inputs. This is one of its clearest hardware strengths.

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

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.

A 100-inch image makes games and HDR highlights feel enormous and engaging. The sheer size impresses, although seating distance and installation space matter.

Slow dimming-zone transitions cause visible errors.

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

Protective packaging is reassuring.

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

Solar charging avoids replaceable batteries.

The click-to-search feature feels limited.

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

Stand support is reassuring.

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

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

Lack of USB recording is a drawback.

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

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

Reduced menu obstruction improves operation.

Picture stays visible while changing options.

SmartThings expands usefulness beyond watching TV.

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

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

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

Mini LED brings compelling HDR experiences.

A real-time FPS display is a useful upgrade.

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

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

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

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

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

Battery-free solar recharging is convenient.