Dreame Q100 vs Hisense U7S / U77SE

Unfortunately the Dreame Q100 is too simple, and above all too dim, a television to talk about a true HDR effect. The peak brightness we measured reaches at most about 300 nits, which is clearly too little for bright elements of the image to actually 'pop' with light. In fact, this is a level we more often associate with SDR material than with HDR. It therefore lacks the brightness headroom offered by more expensive televisions that makes highlights, reflections and the sun look noticeably more striking.

HDR colours

Fortunately the Q100 makes up for this a little elsewhere. The manufacturer markets it as a QLED television, although in practice a PFS filter is responsible for widening the colour palette. The DCI-P3 colour space we measured is covered at roughly 92%, and BT.2020 at about 67%. These are not top-tier figures, but still clearly better than simple LCD televisions without an additional gamut-expanding layer. As a result, HDR material can at least offer more saturated and varied colours, even if the brightness itself does not yet allow us to speak of a fully fledged HDR effect.

The Hisense U7S has considerable potential for HDR display, but it cannot exploit that potential in every scene. On a test pattern it reaches around 1,100 nits, so the backlight itself is very strong. In our brighter film scenes we measured about 640 to 745 nits. That is still plenty for the sun or bright highlights to have a clear bloom and to show an advantage over SDR material. When the TV needs to brighten a larger portion of the image, it handles it fairly well.

The problem appears with small highlights on a dark background. Each of the 192 zones covers an area much larger than a tiny point on the screen. If the TV were to light that whole zone strongly, it would also brighten the area around the highlight. Hisense tries to avoid that and dims the entire zone. This makes blacks look better, but a small bright object that should attract the eye also loses intensity. That is why in two more demanding scenes we recorded only 297 and 154 nits. The difference is large: in one shot HDR can impress, and in the next small highlights are noticeably muted. The U7S therefore prioritises preserving deep blacks, even at the expense of bright details. With that number of zones it is an understandable compromise, but worth bearing in mind — the peak 1,100 nits tells us about the backlight’s capability, not how brightly the TV will show every element of a film.

Colours

Hisense describes the U7S as ULED, but that is a marketing name, and it is a PFS phosphor backlight that expands the colour palette here. In our measurements the TV covered about 91% of the DCI-P3 colour space and 71% of BT.2020. Those are good results, though they fall short of the best screens on the market. The largest shortfall is in green — the TV does not even reach the DCI-P3 boundary here, so the most intense shades will be less saturated than they should be. Most colours in HDR films and series still look suitably vibrant. A positive is the repeatability of the results. Gamut coverage on test patterns and in film scenes is practically identical.

We chose the "Film" mode for testing and, in our opinion, it is by far the best of the available presets. There are none of the heavily boosted, unnatural colours you can see, for example, in the Vivid/Dynamic mode. The picture looks quite reasonable straight away, although it falls a little short of perfect. In SDR material the most noticeable issue was a slight warming of the image. The white balance had too much red, which made whites lean towards a warmer hue, and a similar tint was visible in shades of grey. In HDR the situation was a little different. Here blue had a slight advantage, making the picture a touch cooler. These are not major faults, though. For such an inexpensive TV, the factory settings on our unit were fairly decent, and the "Film" mode already delivers a relatively natural image without much fiddling with the settings.

Out-of-the-box colours on the Hisense U7S are decent, but there are a few areas to improve. In SDR there is a red bias in the white balance, which makes the picture too warm and, in places, slightly pink. You can notice this on faces and on bright, neutral surfaces. The gamma also runs below the target, so the TV brightens the image, particularly in darker areas. That makes shadow detail easier to see, but the scene loses some of its depth.

In HDR the white balance is somewhat more even, but not entirely neutral, with a shortage of blue in the mid-tones and a lack of red in the brightest parts. A bigger issue is how brightness is rendered. The EOTF curve shows a large portion of the mid-tones being lifted, causing the picture to look brighter than the source intends. Color Checker measurements are also weaker than in SDR: many errors are around 3 to 4, and some reach as high as 8. Colours can therefore look attractive, but they are not always faithful to what we should see. There is room for improvement here and we will see how much can be corrected through calibration.

Contrary to appearances, the Dreame Q100 is quite well prepared for image calibration. The menu contains quite a few advanced picture settings that allow its characteristics to be adjusted fairly precisely. In our case the most work was required on the white balance, both in SDR and HDR. After correction SDR content looked very good. We managed to achieve a practically neutral white balance and natural colours, with the main remaining limitation being the black level itself, stemming from the panel construction and the lack of local dimming.

In HDR we also managed to improve white balance and colour reproduction, but here the limitations of the TV's electronics become apparent more quickly. Even after very precise adjustment of the EOTF curve, the Q100 does not always follow it correctly during actual scenes. In some content it can also brighten the image further, causing some parts to look brighter than they should, and in bright areas some details can be lost as a result.

Calibration of the Hisense U7S brought the biggest improvements with SDR material. We managed to even out the white balance, so the previous warm tint has gone and whites and greys now look neutral. Gamma is also now very close to the reference, and the TV no longer brightens the picture unnecessarily, so darker scenes have regained depth. Color Checker measurements confirm the improvement: most errors are below 2. That means the picture is very well set up for watching regular TV and SDR films. It wasn't as smooth in HDR. There is no effective way to correct the EOTF curve, so the TV still interprets a film's brightness somewhat on its own. It brightens parts of the picture and can dim the brightest elements depending on the scene and the behaviour of the local dimming. Calibration could not eliminate this. This is also reflected in the Color Checker results, where many errors remain around 3–4 and a few exceed 7. So the result in SDR is really very good, but in HDR we must accept that the TV adds its own interpretation of brightness to the image.

The weakest point of the Dreame Q100 is its digital image processing capabilities. The processor used copes only moderately well with enhancing weaker sources, and the menu lacks any function that effectively smooths unsightly tonal transitions or reduces visible posterisation. Upscaling itself is also unimpressive. With low-resolution material the image is fairly soft and lacks faithful detail reproduction. Additionally, the Q100 tends to overscan, slightly cropping the edges of the image with very poor sources, such as 480p material. In everyday viewing of HD or 4K content this won't be a major problem, but with older recordings the processor's limitations become clearly visible.

The handling of lower-quality material is fairly mediocre on the Hisense U7S. The Pentonic 700 chipset used here does not cope particularly well with strong compression artefacts. The menu includes a "Smooth and Gradient Image" function, but its performance leaves much to be desired. At the low setting tonal transitions show little improvement, although at least the image does not suffer. The medium and high settings still do not remove obvious banding between shades, and they begin to blur details; in our test material even parts of characters' faces disappeared. Interestingly, film grain remains untouched at every level. If you do use this feature, stick to the low setting. Its current behaviour needs refinement, but that is mainly down to the chipset used here.

Upscaling to 4K performs much better. Lower-resolution content gains in legibility, edges are well reproduced, and fine elements look sharp. That does not mean it recovers details that were never in the recording, but the TV makes good use of what it receives from the source. Another plus is that it does not crop the image edges, even with an SD signal.

The VA panel used in the Dreame Q100 has a native 60 Hz refresh rate, so from the outset this is not a TV designed for the most demanding sports fans or gamers. The manufacturer does mention the ability to run at 120 Hz, and that option is indeed available, but it mainly applies to a mode intended for gamers. In everyday use the Q100 should therefore be treated as a conventional 60 Hz TV. For fast-paced sports broadcasts or rapid gameplay this means less smooth motion than in models with 120 Hz panels or higher. On the plus side, the panel’s response time is worth noting. The VA panel does not exhibit excessive smearing, so motion remains quite clear and does not leave strong, blurred trails behind moving objects. For films you can also use a simple motion-smoothing system. The manufacturer has prepared several ready-made presets that help reduce the characteristic judder in material shot at 24 frames per second.

Motion handling on the Hisense U7S is decent thanks to the 144 Hz refresh rate. For films there is also a motion smoother with adjustable judder and blur reduction. You can therefore keep a more cinematic motion or increase smoothness if jerky camera pans bother you. The high refresh rate is also useful for sports and gaming, but unfortunately it does not solve the panel's biggest problem.

That problem is pixel response time. Fast-moving objects leave long, clearly visible trails, as our UFO test shows. It looks worst on dark backgrounds, where the trail behind the object is particularly pronounced. So motion can be smooth, but the moving object itself loses sharpness, and that difference on the U7S is fairly easy to notice.

The Dreame Q100 is not a strictly gaming device, but for console use it offers a reasonable package. It provides VRR to eliminate screen tearing and ALLM, which automatically switches the TV to a low-latency mode when it detects a console signal. An interesting compromise is support for a 120 Hz mode. The panel won’t achieve that refresh rate in 4K, but dropping to 1080p lets you play at 120 frames per second. If a given title prioritises smoothness over high resolution (and the game offers such a mode), it’s worth using this option. There’s also a handy Game Bar on board, allowing you to quickly change display settings, switch the refresh mode or add a virtual crosshair. Admittedly the HGiG implementation is weak here, but it earns points for supporting Dolby Vision Gaming on Xbox Series X and S. This is not a panel for technological purists, but for casual console gaming it performs flawlessly, especially when you opt to trade 4K for a smoother Full HD.

The Hisense U7S has a lot to offer gamers. You get two HDMI 2.1 ports and support for 120 Hz at Full HD, 1440p, and 4K, so modern consoles’ capabilities are well used. When connected to a PC you can use 144 Hz at 4K or switch the resolution to Full HD and run 240 Hz. So there’s a wide choice, although it’s worth remembering the motion smearing mentioned earlier, which the high refresh rate does not eliminate. VRR and ALLM are also present. The first helps prevent tearing when frame rates in a game change. The second automatically switches the TV into game mode, so you don’t have to dig through the menu each time. VRR works from 48 to 240 Hz, with the highest refresh rate available in Full HD. Xbox users can also play in Dolby Vision, including at 120 Hz. Importantly, this format does not introduce significant input lag here. The Game Bar also looks very good. It’s easy to read, visually appealing, and lets you quickly check what signal the TV is receiving. There are also handy gaming settings at your fingertips, including shadow brightening. If it’s hard to spot an opponent in a dark game, you can improve visibility without digging through the entire menu.

Our biggest complaints concern HGiG. Hisense continues to do its own tone mapping, which makes setting HDR on the console confusing. You adjust a checkerboard test pattern and the TV continuously adapts how it looks. As a result, the moment the pattern disappears does not correctly indicate the screen’s brightness limit, and it’s easy to set the value too high. For this model it’s better to set the target HDR peak brightness on the console to about 900 to 1000 nits, rather than relying on the configurator.