Philips OLED909 vs Dreame S100

Philips OLED909 impresses with its HDR quality, achieving up to 1500 nits of peak brightness in tested scenes. This is an excellent result, placing this television among the best OLED models on the market. The MLA panel, also used in models such as the Panasonic Z95A and LG G4, plays a key role here, allowing for exceptionally bright and detailed reproduction of dynamic scenes. However, it is worth noting that in the most demanding scene from the film The Meg, brightness drops to around 700 nits. This is a typical phenomenon in OLED technology, where intensely bright full-screen images cause a limitation in luminance. Nevertheless, the HDR effect still looks very good, and the television performs better than most of the competition under similar conditions. The wide colour gamut coverage also deserves praise. The OLED909 offers 95% coverage of DCI-P3, ensuring that the television can display vibrant and realistic colours.

The Dreame S100 is a relatively bright television. In movie mode, the brightness we measured reached around 600 nits. This is a really good result, although not the highest when considering the competition at this price point. In fullscreen scenes, it is evident that the television can produce an image that impresses with its brightness. Unfortunately, when more complex scenes appeared on the screen, the local dimming algorithm in this model primarily focused on maintaining the deepest blacks. However, this came at the expense of HDR performance – and in a drastic manner. In such scenes, the brightness of bright elements dropped below 100 nits, which is a frankly tragic result, far from any HDR effect. One can improve this aspect, but not without a "however." It is simply necessary to change the local dimming setting in the television's menu, but then the blacks in such scenes simply become grey. It's a pity that Dreame couldn't better refine the local dimming algorithms, and the S100 is another example that the sheer number of local dimming zones does not always translate to a better image. As a consolation, it is worth adding that the Dreame S100 is advertised as a "QLED" type television, although in reality it uses a PFS LED filter. As a result, the colours are appropriately saturated, and the colour gamut coverage of DCI-P3 we measured exceeded 94%.

Just like with other televisions, the Philips OLED909 has been tested for colour reproduction in factory modes. The best mode turned out to be Filmmaker Mode, however, despite its name, it is not without flaws.

The biggest problem is the white balance. In both HD and 4K HDR content, there is a noticeable dominance of green and red hues, which causes a distinct yellowing of the screen. This effect is particularly evident in test materials, for instance in a scene with Tom Cruise in the foreground, where the difference compared to a calibrated image is very apparent.

As for brightness characteristics, in HD material the gamma was overly boosted – it was below the reference value of 2.4, which gave the image a “milky” filter and affected overall clarity. In the case of 4K HDR content, we noticed the opposite phenomenon – at the beginning of the EOTF curve, there is a noticeable drop, indicating problems with reproducing the smallest details in dark scenes. Although Filmmaker Mode offers acceptable quality, noticeable errors in white balance and brightness characteristics show that the television requires additional calibration to fully demonstrate its potential in colour reproduction.

We tested the Dreame S100 in 'movie' mode and we definitely recommend using this setting for watching all types of content. Interestingly, within the deeper settings of the television, we also find a dedicated 'Filmmaker' mode, which is now available from almost every manufacturer. However, in the case of the Dreame S100, we do not recommend using it – it blocks all settings related to the picture and does not allow for any configuration in the menu - even motion smoothing. So, how do the factory colours of the S100 fare? Not too badly, but also not the best. The television itself was quite heavily tinted with blue components, which is clearly visible in our white balance measurements. This made the picture artificially brightened, and the colours had a slight bluish tint. This is confirmed by the Color Checker palette, which showed how the colour samples tend to drift towards blue, generating quite significant colour errors. The picture in HDR mode looked definitely better, where the colour errors were not as prominent, although they still fell far from perfection. Here, the white balance was also shifted too much towards blue, causing considerable errors in colour reproduction.

Philips OLED909 offers tools for image calibration, which significantly improves its quality. After calibrating the Filmmaker Mode, the television presents a much more natural colour representation. The white balance after calibration looks very good. Although we noticed slight deviations in the blue tint in HD content, the errors are within acceptable limits, and the image gives a much better impression than in the factory settings. The brightness characteristics, including gamma and EOTF, have also been clearly improved. The television no longer has issues with excessive brightening or darkening of the image. Both dark and bright details are now rendered correctly, making the image look very good in every scene. After calibration, the Filmmaker Mode in the Philips OLED909 offers excellent image quality that will meet the expectations of even the more demanding users. Calibration fully utilises the potential of this model.

The Dreame S100 has proven to be a device very amenable to professional calibration. In its menu, we found a plethora of advanced options that allowed us to effectively correct factory errors. Thanks to advanced white balance correction – both in SDR and HDR content – we completely eliminated the excess blue components. The image immediately became much more natural and pleasant to the eye. After fully tuning the colours, the errors in the Color Checker test dropped below Delta E values of 2-3. For the average viewer, this means that any colour distortions have become nearly impossible to perceive with the naked eye. This is truly a pleasant surprise, as new brands in the television market often encounter significant issues with the correct implementation and functioning of sliders in the calibration menu. Here, everything worked as it should. The only thing we must criticise is the way the television manages its brightness in HDR. Due to the specific nature of the local dimming algorithms, anomalies can be seen on the EOTF curve we measured. Where high highlights should appear, there is a slight boosting of the curve above the reference line. In practice, this causes an unnatural brightening of some of the brightest elements in films or games. Despite this minor flaw, professional calibration brings about a huge, very positive change in this model.

The Philips OLED909 offers a distortion reduction feature aimed at smoothing tonal transitions. Unfortunately, the effectiveness of this function leaves much to be desired. Setting it to the "Medium" level brings certain effects, but it comes with the risk of blurring important details in the image. For this reason, we do not recommend using this option unless we are keen on mitigating visible artifacts at the cost of detail.

As for image scaling, the television presents a very plastic image, which may appeal to viewers who prefer a softer picture. Those expecting clearer sharpness will also find a solution, as image scaling can be adjusted according to individual preferences in the settings.

For scaling and digital processing in the Dreame S100, the technology that the manufacturer proudly calls Dreamind™ Pro AI is responsible. However, it must be clearly stated that this is not a proprietary processor, but merely a marketing name for a chip made by MediaTek – more precisely, the MT5889 model. Unfortunately, we are talking about a rather outdated unit, from a time when MediaTek lagged significantly behind the competition in terms of performance. This unfortunately has a direct impact on the image as that is what this chip also deals with. The upscaling in the S100 is quite mediocre, and the processor has a tendency to heavily and artificially sharpen edges (fortunately, this can be somewhat tempered with the sharpness slider in the menu). In the options, we also find the "Contour Smoothing" feature, which theoretically is supposed to improve tonal transitions. In practice, it offers almost no improvement – setting it to any level rarely eliminates visible banding of colours, but it can unnecessarily blur elements of the image that should remain sharp.

A separate issue is the phenomenon of overscan (cropping the edges of the frame), which is noticeable here practically all the time. Although there is an option to set the screen to display the full frame in low-resolution materials, this requires activating the previously mentioned Filmmaker mode. And as you know, this mode completely blocks the adjustment of any other sliders in the picture menu. In our test tables, we marked that the television offers an option to disable overscan, as technically such a function exists in the system – however, in everyday use, when maintaining sensible image settings, you will not be able to take advantage of it.

The Philips OLED909 with a 144 Hz panel offers excellent motion smoothness, which should satisfy both film enthusiasts and gamers. Additionally, the television is equipped with a motion smoothing feature called "Motion Style", which allows for precise adjustment of motion fluidity to personal preferences. In the settings, we find two sliders: "Smoothness", responsible for regulating motion fluidity in films, and "Blur Reduction", which helps eliminate minor artifacts and distortions in dynamic scenes. This feature works well, ensuring that even rapid movements on the screen are clear and readable.

When it comes to motion fluidity, the Dreame S100 performs really well. It features a panel with a refresh rate of 144 Hz, although in reality, the vast majority of people using it in a traditional way will still be limited to 120 Hz (as this is the maximum supported by today's equipment apart from PCs). Thanks to the high refresh rate, the image in motion remains really sharp, largely thanks to the well-functioning MEMC smoother. In the menu, we find predefined modes that allow the television to efficiently generate artificial frames, which effectively improves the fluidity of dynamic sports scenes, but also eliminates image stuttering in film and series materials recorded at 24 frames.

The Philips OLED909 is a television that meets practically all the requirements of gamers. Equipped with ALLM (Auto Low Latency Mode), VRR (Variable Refresh Rate), and support for Dolby Vision, it guarantees an excellent gaming experience. Additionally, the television offers very low input lag, ensuring that reactions to player movements are instantaneous, which will be particularly appreciated by fans of fast-paced games.

The television handles any resolution at 120 Hz without any issues, and even supports higher refresh rates. The HGiG feature, responsible for accurately displaying HDR content in games, works as it should, making the image in game mode balanced and aligned with the guidelines of console manufacturers.

The OLED909 is also equipped with the Game Bar feature, which allows for quick preview and adjustment of game-related settings. Although the interface of this solution appears less visually appealing than that of competitors, it serves its purpose well, offering all the essential options in one place.

The Dreame S100 seems almost like the perfect screen for a gamer. The television is equipped with 2 HDMI 2.1 ports with a bandwidth of 40 Gbps, which means that functions like automatic game mode (ALLM) and variable refresh rate (VRR) ranging from 48 to 144 Hz work seamlessly on consoles. It also features a well-designed gaming panel (Game Bar), allowing users to continuously monitor important parameters—from active picture modes to the number of frames rendered by the console, and even the option to add a crosshair in the middle of the screen. All of this looks great on paper; however, the biggest problem with the S100 is the implementation of HDR mode in games. The television does not have the HGiG format implemented correctly. As a result, an unsuspecting user may incorrectly configure the console when first using the screen. Poor configuration can lead to an image that is too dark or too washed out (as a guideline: we suggest setting the brightness in the Xbox console menu to around 600 nits, and in the PS5 to 12 clicks). The Dolby Vision format also proves problematic, as it often would not activate at all between the XBOX and Dreame S100. And when it was finally managed to be activated, playing was not possible due to a very high input lag often exceeding 100ms. If the manufacturer can improve the HDR issue in games via an update, the S100 will be truly excellent hardware for gamers. For now, however, compromises need to be accepted.