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Review of the 45-inch curved OLED gaming monitor LG UltraGear OLED 45GR95QE-B with a resolution of 3440x1440

31.01.2024 09:04

Specifications, delivery set

Model name, linkLG UltraGear OLED 45GR95QE-B
Matrix typeOLED — matrix of organic light-emitting diodes (type — W-OLED+C/F)
Diagonal113 cm (44.5 in) curved screen with 800 mm radius of curvature
Relationship between the parties21:9
Permission3440x1440 pixels
Pixel pitch84 PPI
Brightness200 cd/m² (standard), 1000 cd/m² (peak)
Contrast1,500,000: 1 (standard)
Viewing Angles178° (horizontal) and 178° (vertical) to contrast ≥ 10:1
Response time0.03 ms (gray to gray — GTG)
Number of colors displayed1.07 billion, 10 bits per color
  • HDMI video/audio input, version 2.1, 2 pcs.
  • DisplayPort video/audio input, version 1.4
  • input to hub and other functions, USB 3.0, type B socket
  • USB hub output, version 3.0, type A, 2 pcs.
  • headset output, 3.5 mm jack, four-pin minijack
  • digital optical audio output (Toslink)
Compatible Video Signals
Acoustic systemabsent
  • curved screen surface with a radius of curvature of 800 mm
  • conditionally frameless screen
  • HDR10 support
  • factory calibration and hardware calibration support
  • color gamut 98.5% DCI-P3 (CIE 1976)
  • picture-in-picture and picture-by-picture functions
  • HDCP 2.3 support
  • no flicker and low blue intensity mode
  • anti-glare screen
  • support for AMD FreeSync Premium, VRR and Nvidia G-Sync Compatible technologies (48-240 Hz)
  • Gaming features: game modes, shadow brightness increase/decrease, on-screen crosshair, frame rate counter
  • DTS Headphone:X support
  • decorative lighting on the rear panel
  • stand: turn right-left 10°, tilt 5° forward and 15° back, lift 0-110 mm, rotate clockwise and counterclockwise ±3°
  • quick release stand
  • Kensington lock connector
  • 100x100mm VESA pad for wall mounting
  • OnScreen Control software for organizing windows and adjusting your monitor
  • Dual controller software support
  • 24 month warranty
Dimensions (W×H×D)993×(538—648)×363 mm with stand
993×457×218 mm without stand
Weight10.9 kg with stand, 8.6 kg without stand
Power consumption160 W maximum, 129 W typical, less than 0.5 W standby
Supply voltage (external power supply)100—240 V, 50/60 Hz
Delivery set (needs to be checked before purchasing)
  • monitor
  • stand kit: base and stand
  • power supply (100-240 V, 50/60 Hz at 19.5 V/10.8 A; cable 1.5 m)
  • power cable (Euro plug), 1.5 m
  • DisplayPort cable, 1.8 m
  • USB cable (3.0), type A plug to type B plug, 1.8 m
  • cable clamp
  • IR remote control and CR2025 battery
  • screwdriver
  • user guide
  • quick user guide
  • warranty card
  • calibration report
  • additional documentation


The monitor is made in a color option that the manufacturer calls “Purple Grey.” We can describe it as a deep dark grey-blue. The external surfaces of panels and structural elements, made of various materials, are available in several finishes: from semi-matte to semi-matte with silver inclusions, as well as glossy.

The monitor screen is strongly curved in a cylindrical shape, with a stated radius of curvature of 800 mm. This gives the impression that the right and left edges are pushed forward. Reflections in the screen indicate that the bend is quite uniform over most of the area, with a radius corresponding to the declared one, and only at the edges of the vertical area of ​​the screen, about 3 cm, the screen seems flatter. The screen surface is monolithic, black and semi-matte (with some degree of reflection), with a narrow aluminum profile border around the perimeter. When the image is displayed on the screen, it can be seen that there are narrow margins between the outer edges of the screen and the actual display area (approximately 9mm at the top and sides, and approximately 12mm at the bottom). There is no special anti-reflective coating (filter) provided.

The rear panel in its narrow part (where the screen thickness is approximately 8 mm), that is, in the top and side parts, is made of aluminum alloy, which gives the screen sufficient rigidity, despite its thinness. In the center of the rear side, the horizontal lower part of the screen block is significantly thicker and covered with a plastic casing. This casing protrudes slightly downward beyond the edge of the matrix. The front part of this protrusion is covered with a plastic film with a glossy surface.

There is a protrusion in the front center, behind which there is an IR receiver for signals from the remote control. At the bottom there is a single button that allows you to turn the monitor on/off and perform limited control over it. There are also connectors here: one for connecting a headset and the other for a Kensington lock.

The plastic casing of the screen unit has ventilation grilles at the top and bottom, and transparent plastic inserts on the sides, illuminated by RGB LEDs.

The backlight, apparently, is not divided into independently controlled zones, since the LED on the bottom end and the inserts on the back glow the same color everywhere. In the menu you can choose which color, or enable a slow cyclic color change mode.

The power connectors and most interface connectors are located in a shallow recess on the rear panel and are directed towards the rear, making connections easy. The stand post has a special clamp that can be used to secure cables running away from connectors, providing a neater organization.

To support the weight of the monitor, the supporting elements of the stand are made of aluminum alloy and steel, ensuring stability on a standard stand. The design of the stand is quite rigid, and elastic plastic pads on the bottom prevent scratches and provide stability on smooth surfaces. Widely spaced supports allow you to place even a full-size keyboard close to the monitor. The standard stand allows you to adjust the tilt forward, tilt back, change the height and rotate left and right.

The screen unit can additionally be rotated clockwise or counterclockwise by a small angle for horizontal alignment.

The monitor stand has a fixed height. The hinge with mounting pad slides along well-lubricated aluminum guides using low-friction plastic inserts as bearings. The built-in spring mechanism compensates for the weight of the screen unit. The stand is attached to the screen block with latches in one movement and is also easily detached by holding the release button. You can also use the screen unit on a VESA-compatible bracket with holes in the corners of a square with a side of 100 mm.

The monitor is packaged in a durable corrugated cardboard box with a sleek design. Internal foam inserts ensure safe transportation. To carry the packaged monitor, there are slotted handles on the short edges of the box.


The monitor is equipped with three digital inputs: a full-size DisplayPort and two HDMI. The input selection is made through the main settings menu or the quick access menu. An automatic signal search function at the inputs is available, which can be disabled. If a signal is detected at another input while operating from one source, the monitor displays a message prompting you to switch to the new source.

In addition to the video signal, the inputs are capable of accepting digital audio signals, which, after conversion, are output through the 3.5 mm minijack jack in analog form. This allows you to connect an external active speaker system or headphones. The headphone output power is sufficient to provide a large volume headroom in 32-ohm headphones with a sensitivity of 92 dB. The sound in the headphones is rated as clear, with a wide frequency range, without noticeable noise in pauses. DTS Headphone:X surround sound simulation mode is supported.

The monitor supports connecting a headset, but for the microphone to work, you must connect the monitor to the PC via USB. In addition, it is possible to output audio via a digital optical audio output (Toslink).

A built-in USB (3.0) hub with two ports makes it easy to connect additional devices.

The package includes long enough cables for convenient use.

External power supply. This has both its advantages (easy replacement in case of failure) and disadvantages (it can get in the way).

Menu, localization and control

When you turn on the monitor, a low sound signal appears, which, if desired, can be turned off in the settings. There is no power indicator on the monitor. The single button on the device provides limited functionality, and the user is primarily expected to use an infrared remote control to interact with the monitor.

Considering the size of the screen and the fact that the user is likely to be more than an arm's length away from the screen, using an infrared remote control seems quite convenient. The remote control body is made of matte black plastic. The device is powered by one CR2025 battery.

A number of functions or options are available directly by pressing a button on the remote control, and one of the functions from the list can be assigned to two buttons.

A separate button calls up a menu with functions for caring for the OLED panel.

All other settings are in the main menu. Navigation through the menu is convenient, the lists are looped. When adjusting the image, the menu remains on the screen, which makes it a little difficult to evaluate the adjustments being made.

The menu is quite large, its readability is good (for scale: the white field is the entire display area).

There is a Russian version of the on-screen menu. The Cyrillic font of the menu is smooth, the inscriptions are readable. The quality of the translation into Russian is good.

Among the additional features, there are two “gamer” functions: a display of a sight of the selected shape and color in the center of the screen, or a frame rate counter in one of the corners, but only one thing is displayed at a time.

There is a function to automatically turn off the monitor or just the screen after a certain period of inactivity.

The package includes a quick and full user manual, a calibration report, a warranty card, and several additional documents.

The use of proprietary OnScreen Control software is supported, which makes it easier to organize application windows on the desktop, allows you to configure the monitor from your computer, and is also capable of automatically linking image profiles to active applications. The program is also responsible for updating the monitor's firmware.

It is also possible to install and use the Dual Controller program. With its help, you can control two computers connected to the same network using one set of mouse and keyboard. The program also makes it easy to copy files between computers, and the image from both PCs can be displayed on one monitor in PBP mode or on two different ones. No tests were carried out on this issue in this work.


There are several preset profiles (Game Mode list) with preset image settings. In some profiles, some settings cannot be changed.

For an HDR signal, a number of profiles and settings are not available. There are not so many settings that regulate brightness and color balance, other than the typical ones.

Several geometric transformation modes will allow you to choose the appropriate one for a given case.

The monitor has Picture-in-Picture (PIP) and Picture-by-Picture (PBP) functions. In PIP mode, you can select the location of the additional window in one of the four corners, its size from two options (pixel-to-pixel output for the additional window in 1280x720 and 720x480 pixel modes) and the sound source (input for the main or additional window). In PBP mode, when the screen is split into two horizontally, you can get two images with a resolution of 1720x1440 pixels with dot-to-dot output and filling the entire display area from two independent sources with a refresh rate of 120 Hz maximum.

When using DisplayPort and a professional video card, 10-bit per color mode is supported both at the input and at the output to the monitor screen. This mode was tested using an Nvidia Quadro K600 video card and NEC Display Solutions 10 bit Color Depth Demo. When connected to a computer via DisplayPort or HDMI, you can use resolutions up to 3440x1440 at 240 Hz frame rate in modes up to 12 bits per color, inclusive, without loss of color clarity.

The monitor supports FreeSync technology via DisplayPort and HDMI inputs with a supported frequency range of 48-240 Hz for modes with a frame rate of 240 Hz. A test using the test utility confirmed that the image was stable and there was no tearing when FreeSync was activated. Also, with Nvidia graphics cards, the monitor supports G-Sync in G-Sync Compatible mode via DisplayPort and HDMI. When tested with the G-Sync Pendulum Demo utility, G-Sync mode turned on without any problems, providing a smooth and uninterrupted display.

The monitor has HDR capabilities, and in Windows 11/10 mode, HDR can be activated through the appropriate display settings. Testing using the DisplayHDR test tool showed excellent results, confirming 10-bit output and high-quality reproduction of the color range close to DCI-P3. Reproduction of HDR content is rated excellent, with crisp blacks and high brightness even on large and pinpoint objects. There is no noticeable artifacts or ghosting when viewing HDR content.

In addition, the monitor is equipped with a feature that automatically turns off or turns off the screen after a certain period of inactivity. The monitor comes with detailed documentation, including quick and full user guides, a calibration report, a warranty card, and additional supporting documents. Also available are proprietary programs OnScreen Control and Dual Controller for more convenient control and adjustment of the monitor.

Microphotographs of the matrix

Modern mass-produced monitors and TVs using OLED technology use a special configuration that differs from typical OLED implementations in mobile devices. The main difference is that each subpixel is equipped with its own independent OLED white light source. In this case, the colors — red, green and blue — are formed using light filters installed in front of these sources. To optimize power consumption and increase brightness, each triad of subpixels, which is a combination of red, green and blue colors, is complemented by a white subpixel, which does not have a light filter. This implementation is called W-OLED+C/F (W – white and C/F – color filter). Unlike mobile OLED screens, where each subpixel emits its own color without the use of light filters (RGB OLED), W-OLED+C/F may have lower efficiency due to the fact that light filters filter a significant part of the emission spectrum, converting it into unnecessary heat.

Despite the technological differences, W-OLED+C/F retains the core advantages of OLED, in particular the ability to achieve absolute black at the individual pixel level, regardless of the state of surrounding pixels. In addition, matrices with W-OLED+C/F turn out to be simpler and more affordable to produce.

Examples of matrix pixels at low magnification for various colors are shown in the image:


The image shows that the filters are applied in vertical stripes, similar to typical LCD matrices. In this configuration, the white settings include the blue subpixel. It is important to note that due to the arrangement of subpixels and the formation of shades, yellow objects with a clear outline on a white background may have a pronounced red border on the left and a green border on the right. There may also be artifacts when displaying text using ClearType technology. However, ClearType can be disabled or alternative font rendering methods can be used. The pixel structure of the image may appear slightly blurred due to the semi-matte surface.


When focusing on the surface of the screen (photo above on the right), you can identify chaotically located surface microdefects that are responsible for the matte properties. The grain of these defects is much smaller than the size of the subpixels (the scale of these two photographs is the same), which leads to weak focusing on microdefects and “jumping” of focus across subpixels when the viewing angle changes, which is why a “crystalline” effect does not occur.

Most potential buyers of monitors and TVs with OLED matrices are afraid of the burn-in effect — an irremovable residual image. However, in practice, with a variety of content without static elements, OLED burn-in does not occur. This is also facilitated by various features built into the monitor to prevent burn-in. There are several of them in this model.

Brightness and power consumption measurements

Measurements of brightness, color temperature and ΔE on a white field in the entire screen were carried out at 25 points located in increments of 1/6 from the width and height of the screen (screen borders are not included). Measuring the brightness of the black field and calculating the contrast in this case is useless, since with the correct settings the black field is completely and absolutely black.

Brightness200 cd/m²180210
Colorful temperature898087309480

The uniformity of all three parameters — brightness, color tone and color temperature — is of a very high level. Visually, on a white field there is no variation in brightness and color tone over the entire area.

Changes in the size of the white area can also affect maximum brightness; However, the dependence of brightness on the area of the white area may vary depending on the selected profile, image settings and the current mode (SDR or HDR). For example, in Player 1 mode with an SDR signal, the brightness from 1% to 100% of the white area remains at 190 cd/m². On the other hand, for the “Bright” profile and the SDR signal, the dependence of brightness on the area of the white area has the following form (in addition, power consumption is represented along the vertical axis):

It can be seen that the peak brightness reaches approximately 400 cd/m² and is maintained up to 30% of the white area. However, as the white area increases, the brightness gradually decreases, reaching approximately 140 cd/m². In real-life use conditions, such as watching movies, games, photos, usually the white area or scene brightness remains low, which allows you to maintain high image brightness. Even in bright room lighting, the picture remains bright enough and does not look dull.

When switching between dark and light images, or when using an HDR signal, the brightness changes dynamically. Here is an example of a graph of changes in brightness (vertical axis) versus time (horizontal axis) during the transition between black and white areas on the entire screen:

A wide range of brightness adjustments ensures comfortable use of the monitor in various lighting conditions. For example, in the «Bright» mode at Brightness = 100 on a white background with an area of 10% of the total screen area (the rest of the screen is filled with black), the brightness reaches approximately 400 cd/m². At Brightness level = 0 it is reduced to 30 cd/m². This allows you to effectively use the monitor in different ambient lighting conditions, both in bright light and in the dark. It should be noted that with a significant decrease in brightness, there may be a slight deterioration in the display of the darkest shades, manifested in a slight block in the shadow areas and an increase in static noise. However, this does not significantly affect the overall image quality.

In standby mode and when turned off, the monitor consumes approximately 0.5 W of electricity.

Determining response time and output latency

The response time to changes in pixel state is extremely short, since the transition between different states is almost instantaneous. The transition graphs show the absence of pronounced steps on the fronts, which eliminates the possibility of artifacts appearing in the form of trains following moving objects. It is important to note that there are no noticeable artifacts during transitions from black to white and back. For a more visual representation, a graph of brightness changes (along the vertical axis) versus time (along the horizontal axis) during the transition between black and white is shown.

The on time in this case is 0.04 ms, and the off time is 0.07 ms. This high responsiveness of the sensor is more than enough to ensure smooth display even in the most dynamic gaming scenes.

To provide a clearer picture of how this speed affects the visual experience, images taken from a moving camera are provided. These images show what a person sees when they follow a fast-moving object on a screen with their eyes. The experiment used the recommended settings (motion speed 960 pixels/s at a refresh rate of 240 Hz) with a shutter speed of 1/15 sec.

Image clarity is at a high level.

Let's imagine what the experience would be like with a matrix that switches pixels instantly. Using a sensor with a 240 Hz refresh rate and an object moving at 960 pixels/s, it would blur by 4 pixels. This blur effect occurs because the focus of view moves at a speed of 960 pixels/s while the subject remains stationary for 1/240 of a second. For clarity, we'll simulate this effect by imagining a 4 pixel blur:

As you can see, the image clarity remains high, comparable to an ideal matrix.

We also measured the overall output latency, from the time the video buffer pages switch until the image appears on screen. It should be noted that this delay depends on the characteristics of the Windows operating system and video card, not just the monitor. In this case, the image output delay at 240 Hz is only 4 ms. This is an extremely low latency value that is absolutely not noticeable when working on a PC and does not affect performance even in the most dynamic games.

Color rendering quality assessment

The real gamma curve depends on the selected profile in the Gamma list (the values of the approximating function indicators are given in parentheses in the captions, and the coefficient of determination is also there):

The actual gamma curve is closest to standard when Mode 2 is selected, so we next measured the brightness of 256 shades of gray (from 0, 0, 0 to 255, 255, 255) at this setting. The graph below shows the increase (not absolute value!) in brightness between adjacent halftones:

The increase in brightness is not very uniform, but each subsequent shade of gray is significantly brighter than the previous one, even in the darkest area:

The approximation (already by 256 points) of the resulting gamma curve gave a value of 2.26, which is slightly higher than the standard value of 2.2, while the real gamma curve deviates slightly from the approximating power function:

To optimize the visibility of shadow gradations, we recommend setting the Black Stabilizer to 70 and leaving it there. Increasing this value may result in higher black levels, while decreasing it may cause shadow blocking.

To assess the quality of color rendering, an i1Pro 2 spectrophotometer with Argyll CMS software (1.5.0) was used.

The native color gamut significantly exceeds the sRGB standard (98.5% coverage and 136.5% volume) and approaches DCI-P3 (92.3% coverage and 96.7% volume):

The monitor has an sRGB profile, the inclusion of which adjusts the coverage to the boundaries of the corresponding space:

Below is the spectrum for the white field (white line), superimposed on the spectra of the red, green and blue fields (lines of the corresponding colors) in the case of the original color gamut:

It can be seen that the components corresponding to the primary colors are well separated, which allows one to obtain a wide color gamut. In the case of the sRGB profile, the coverage is reduced due to cross-mixing of components:

The white subpixel makes its contribution, especially visible in that the spectrum of white is not simply the sum of the spectra of red, green and blue. This subpixel makes it easier to adjust the brightness balance of white areas relative to color areas. Despite this, there is no visual imbalance in brightness.

For users wishing to use a color management system (CMS), a color profile created during testing using the DisplayCAL program is available in the case of a profile without correction.

Additionally, the monitor supports hardware calibration using LG Calibration Studio software.

We set the standard parameters such as color temperature 6500K, gamma 2.2, sRGB color gamut and maximum brightness. We then performed a calibration and saved the results in the «Calibration 1» profile. As an alternative, we selected the sRGB profile in the monitor settings and made color balance adjustments using the three color gain settings. The graphs below show the color temperature at various parts of the gray scale and the deviation from the blackbody spectrum (ΔE parameter) for the Calibration 1 profile and the sRGB profile with correction. For comparison, the results for the “Player 1” profile without correction are also provided:

The range close to black is not considered, since in this area color rendering is not so critical, and the error in measuring color characteristics is high. In the first two cases, the color balance is good as the color temperature is close to the standard 6500K and the ΔE value remains below 10, which is considered good for consumer (and gaming) devices. Moreover, both parameters change little in different parts of the gray scale, which contributes to a better visual perception of color balance. However, after manual calibration, the ΔE value becomes even lower. In practical terms and taking into account the gaming purpose of the monitor, there is no particular need for any correction. It is worth noting that, unlike LCD matrices, color balance correction in the case of OLED does not affect contrast.

Measuring viewing angles

To study the change in screen brightness when deviating from the perpendicular, measurements were taken of the brightness of white and shades of gray in the center of the screen. Measurements varied over a wide range of angles, including vertical, horizontal, and diagonal (corner to corner) directions. Black field luminance was not measured in this context because it depends on viewing angle and lighting conditions, and contrast was not measured.

Due to the small bend radius of the screen, the measurement results for horizontal and diagonal deviations are not reliable due to the lack of compensation for the shift of the measurement area when the sensor axis deviates. Vertical deviation, in turn, does not affect the curvature of the screen. Note that a decrease in brightness to 50% of the maximum value is observed only at a deviation angle of more than 80 degrees. For comparison, on a typical VA LCD monitor this brightness reduction occurs at approximately 35°.

To quantify the change in color rendering, colorimetric measurements were carried out for different color fields at different angular positions. The obtained intensity values were corrected for the deviation ΔE from the measurement of each field when the sensor was perpendicular to the screen. The results are presented below:

To evaluate the change in color rendering at different angular positions, a deviation of 45° can be used as a reference point. A sign of maintaining the correctness of colors can be considered a ΔE value of less than 3. The graphs show that the primary colors and their light shades change slightly when viewed from an angle. Even at large deflection angles, the white/gray field visually practically does not change its hue.


The OLED technology used in the LG UltraGear OLED 45GR95QE-B monitor delivers outstanding picture quality with true blacks, rich hues and excellent viewing angles. This premium gaming monitor features a large, high-resolution screen, support for up to 240Hz refresh rates, AMD FreeSync and Nvidia G-Sync Compatible technologies, and a host of gaming features. Excellent HDR implementation and the presence of static or dynamic multi-color backlighting add high-quality capabilities to the monitor. It's ideal for a variety of games and provides an enhanced movie experience with a curved widescreen display that enhances immersive viewing.


  • Refresh rate up to 240Hz
  • High image quality and good HDR support
  • AMD FreeSync and Nvidia G-Sync Compatible support
  • Low output latency
  • Multiple gaming features
  • Remote control included
  • 10-bit color support
  • Three video inputs
  • Picture-by-picture and picture-in-picture modes
  • Dual Port USB Hub (3.0)
  • Convenient, adjustable stand and cable management
  • Good quality headphone output


  • No significant