The Samsung U28E590D is the successor to the Samsung U28D590D that we tested a few years ago. The Korean manufacturer uses the same recipe with the 28-inch Ultra HD TN without any special effort. It remains to be seen if it still pays off in 2019.
The Samsung U28E590D monitor features a 28-inch TN panel (≈71 cm) with an Ultra HD resolution of 3840 x 2160 px. The manufacturer announced a contrast ratio of 1000:1, a maximum brightness of 370 cd/m², viewing angles of 170°/160° and a response time of 1 ms. This model has a refresh rate of 60 Hz, but it is FreeSync compatible over a fairly small range (between 40 and 60 Hz). It is also flicker-free and offers a blue light filter.
The main argument for the Samsung U28E590D is its price: this model is sold for less than 300 €, which makes it an interesting model for an office, but also a good companion for Ultra HD compatible game consoles, such as the PS4 Pro and Xbox One X. Be careful though, FreeSync does not work with HDMI inputs.
The Samsung U28E590D adopts a rather classic design. The Samsung design is recognisable by its reasonably broad, but not very deep T-shaped foot. The screen edges are black.
The base has a depth of 18.7 cm, which is somewhat large for a 28-inch model. In comparison, the foot depth of the 32-inch AOC Q3279VWF is 15 cm.
Ergonomics is the weak point of this monitor. The Samsung U28E590D can be adjusted with an inclination between -2° and +20°. The base is not rotating and, above all, it is impossible to adjust the height of the screen, a feature that is far from anecdotal.
The back of the monitor is very classic looking. The black striated plastic gives a little premium look to this model. Also, note the VESA 100 x 100 mm mounting on the upper part of the monitor. The connector system, directly visible, is oriented perpendicular to the base.
The cable management system is simple but very effective. It allows you to group the cables that come out at the back of the monitor with ease.
The connection system consists of two HDMI inputs, a DisplayPort input and a headphone output. The latter is essential to enjoy the sound of HDMI devices since this monitor does not have built-in speakers.
To control the different monitor settings, Samsung chose a clickable joystick. For us, it is simply the most efficient way to access all settings very quickly. One click gives access to change source, mode (presets) and settings (brightness, contrast, sharpness, overdrive, gamma, etc.). The menus are readable, and the navigation is smooth.
The native definition of 3840 x 2160 px is difficult to use without magnification of Windows 10. We have chosen a 150% scaling to be able to operate it with a normal setback distance (60 to 70 cm).
By lowering the brightness from 25 to 150 cd/m², the Samsung U28E590D consumes 21 W, or a relative consumption of only 97 W/m². It consumes more than a 27-inch Full HD monitor, but it remains within the average consumption of the monitors tested (100 W/m² on average). This monitor consumes a minimum of 13 W of brightness (13 cd/m²) and 32 W at 401 cd/m².
Colours and contrast
The temperature curve is stable, but the average measured at 7,510 K is too far from the 6,500 K reference. This results in an image that is too cold and turns blue. The gamma curve lacks stability, but the average of 2.1 is quite close to the reference 2.2. Finally, the average delta E is 3.6 – as a reminder, it is considered excellent below 3; the colours cannot be considered fair, but they are far from being completely false.
To improve the rendering, we have lowered the brightness to 25 in order to obtain a white close to 150 cd/m². We then set the temperature to “hot 1” to get closer to the reference (6,500 K). The temperature thus remains stable and drops to 6,020 K. The gamma average remains the same (2.1), but the curve rises slightly. Finally, colours can now be considered accurate with an average Delta E of 2, and all colours have a Delta E of less than 3, except green and blue.
Calibrating the display smoothes the gamma and temperature curves and slightly improves colour fidelity.
The contrast ratio measured at 730:1 is quite typical for a TN screen, but still lower than the contrast ratio found on monitors equipped with an IPS screen (1,000:1) and far behind monitors equipped with a VA screen, such as the Textorm TX32 or the AOC Q3279VWF which exceed a ratio of 4,000:1. In the image, this translates into faded blacks. This is not a problem for office use and more generally in broad daylight; it is only really annoying in the dark and to watch movies.
The average variation in lighting homogeneity is 9% over the entire screen, an average value for a 28-inch screen. We found slight light leaks in the corners, but no clouding on our test model. Unfortunately, this good homogeneity is hampered by the reduced angles of the TN screen, particularly the vertical angles which reveal a gradient when displaying a circle of a single colour.
The Samsung U28E590D does not use Pulse Width Modulation (PWM) to adjust the brightness. It does not flicker or cause headaches in the most sensitive people. It also offers a blue light filter.
This monitor manages FreeSync between 40 and 60 Hz and therefore works best when the graphics card sends between 40 and 60 frames per second; a very small range, but suitable for the Ultra HD definition of the display which requires a high-performance graphics card anyway. In the operating range, the fluidity is there and the image does not suffer from tearing or jerking problems (micro-stuttering). Be careful, FreeSync only works with the DisplayPort input and is therefore not compatible with Xbox One S and One X that use an HDMI output.
We measured the remanence time at 6 ms with the overdrive set to “Fast”. This value limits ghosting. Above that ( “Accelerated” setting), a reverse ghosting effect appears. Finally, we measured the input lag at 10.3 ms (60 Hz). This means that there is no delay between the source and the display on the monitor.
The Samsung U28E590D is a good Ultra HD monitor. It displays a relatively well-calibrated image after a few adjustments but still suffers from the defects of TN technology (low contrast and limited viewing angles). We regret the lack of FreeSync compatibility with consoles, but it is still a good monitor.
Last update on 2019-03-20 at 10:58 / Affiliate links / Images from Amazon Product Advertising API