At the beginning of 2021, the global raw material market has begun a wave of price increases. Materials such as copper, plastics, and aluminum have all increased by more than 40% compared with last year’s low.
In the DIY market, the prices of products such as memory and SSD have risen accordingly, and displays have not been spared. After the cost of basic components such as driver ICs, PCB boards, bezel kits, and aluminum cabinets has risen sharply, coupled with the shortage of chips, several major display manufacturers have also increased their prices.
For example, the 27-inch Redmi display was 799 yuan ($123), and the current price is 949 yuan ($146). But even so, there are only a handful of models on the market that have similar specifications and are cheaper than it.
Also Read: Xiaomi Redmi Display 1A Unboxing
The 27-inch Redmi display is positioned for office and entertainment purposes. It uses a 1920 × 1080 resolution IPS panel, a three-sided narrow bezel design, a 100% sRGB color gamut, a nominal maximum brightness of 300nit, a contrast ratio of 1000:1, and a grayscale response time of 6ms.
The 27-inch Redmi display has a default refresh rate of 60Hz. But when connected with the HDMI interface, the refresh rate can reach 75Hz.
There may be some students who are a little bit curious about the 27-inch screen using 1080P resolution. But in fact, for text reading, the currently recognized best dot pitch is 0.28-0.3mm. This dot pitch will not have an obvious graininess. It will not make the displayed text too small.
Displays with a dot pitch between 0.28-0.3mm such as the early 19-inch 1440*900 and 22-inch 1680*1050 resolution displays are very suitable for text reading.
The 27-inch Redmi display uses a MV270FHB-N20 panel from BOE. As you can see from the picture above, the MV270FHB-N20 is an IPS-ADS panel. But it does not come with the original backlight at the factory. This means that the 27-inch Redmi display uses a self-made backlight. So the contrast of the actual finished product may have some unevenness.
In terms of refresh rate, it is the standard 60Hz. But Redmi can support up to 75Hz because some overclocking settings have been made on the driver board.
Appearance
The 27-inch Redmi display uses a three-sided narrow bezel design.
The stand is very simple and does not take up much space.
It supports maximum elevation angle of 20 degrees.
It also supports a depression angle of 5 degrees.
The back design also shows the Xiaomi style.
The all-metal bracket can adjust the pitch angle, but does not support lifting.
The ports on the back are five-way joystick, DC power port, HDMI, VGA, and headphone port in sequence.
When the five-way joystick is pressed, the machine can be turned on and off, up, down, left, and right are equivalent to the OSD menu buttons.
When connected with an HDMI cable, the 27-inch Redmi display can support a 75Hz refresh rate. If a VGA interface is used, the maximum only supports a 60Hz refresh rate.
It has a 7mm thickness.
The power adapter supports 100~240V wide voltage input. The output specification is 12V2A and the maximum output power is 24W.
The display adopts a 3-sided narrow bezel design, and the bezels on the top and left and right sides are very narrow.
The left, right and top borders are very narrow.
The bottom border is actually not very wide.
Screen quality test
1. Color gamut coverage
The larger the color gamut value of the monitor, the better. The larger the color gamut, the more colors the monitor can display, the richer the colors that pictures and videos can show, the higher the natural reproduction degree, and the more pleasing to the human eye.
In the test, the 27-inch sRGB color gamut of the Redmi display is 99%, and the AdobeRGB color gamut is 85%. In terms of color gamut performance, this is a very good wide color gamut display, and its color coverage has satisfied the area that the human eye can recognize.
2. Brightness & Contrast
When the display brightness is adjusted to 0%, the static contrast ratio reaches 400:1. Under other brightness conditions, the static contrast ratio is around 850. The color temperature of the white point is stable at 6400~6800K, which is very close to the standard value of 6500K. At 25% brightness, the color temperature is just the standard 6500K.
The nominal brightness of the 27-inch Redmi display is 300nit, and the measured maximum brightness is 290nit. This is the data measured when the contrast is adjusted to 100%. In other contrast situations, the brightness will be slightly lower than this number.
3. Display luminosity
The luminosity of 2.2 is a standard value. The closer the gamma curve measured in the test report is to 2.2, the better.
In the tone response test, the 27-inch Redmi display measured a luminosity value of 2.0, which is also very good.
4. Color accuracy
The color accuracy Delta-E is used to quantify the color difference between different colors, which regulates the range of color differences that can be tolerated by the human eye. Generally speaking, Delta-E changes between 3 and 6 are acceptable.
The technical standards related to Delta-E are as follows:
- 1.6-3.2: When viewed from a certain distance, there is basically no difference in color, which is usually regarded as the same color;
- 3.2-6.5: The difference in color can be seen, but the impression of the color is basically the same;
- 6.5-13: The difference in color can be seen, but it can be regarded as the same hue;
- 13-25: It is considered as a different color, if it exceeds this value, it is considered as a different color.
In terms of color accuracy. The highest Delta E value is 4.45, the lowest is 0.33, and the average Delta E value is only 2.02.
The 27-inch Redmi display has not been factory-calibrated. Such a result can only be said to be quite satisfactory.
5. Color & brightness uniformity
50% color uniformity: Delta E is between 0-0.8.
100% color uniformity: Delta E is between 0-1.8.
50% brightness uniformity: Delta E is between 0-14.
100% brightness uniformity: Delta E is between 0-14.
The 27-inch Redmi display has excellent color uniformity, with average brightness uniformity, with dark left and bright right.
Conclusion
Since its inception, the Redmi brand has become the representative of “high cost performance” in the hearts of many consumers.
If nothing else, the 27-inch Redmi display should also be a cost-effective product. However, as we said at the beginning, it suffered from price increase. But it happened only recently.
As a product positioned for office entertainment, it has 100% sRGB color gamut, 80% Adobe RGB color gamut, and a true 300nit brightness Redmi 27-inch display that is excellent in quality and workmanship.
In addition, the current display of the first and second-tier manufacturers below the price of 1,000 yuan, basically all have a refresh rate of 60Hz, while the 27-inch Redmi display can reach 75Hz. That is to say, after turning on the vertical synchronization in the game, the frame rate of the game can be stabilized at 75FPS instead of 60FPS. In the daily office environment, a higher refresh rate can also bring a smoother operation and visual experience. So 75Hz refresh rate is always better than none.
In addition, since the panel provided by BOE does not come with the original backlight, the actual effect of the 27-inch Redmi display with self-made backlight may be different, and there will be a certain number of products whose contrast ratio cannot reach the nominal 1000:1.
This monitor has a three-year warranty service from the original factory. It is recommended that users test the brightness and contrast parameters of the monitor by themselves after purchase. If the measured actual contrast ratio is lower than 600:1, you can apply for a return or exchange service.