Samsung 27″ Odyssey G7 Gaming Monitor (C27G75TQSU) With 240 Hz Quad HD VA Monitors

With the AOC Agon PD27, the Samsung Odyssey G7 27 “is one of the very few monitors equipped with a VA Quad HD panel that can reach a refresh rate of 240 Hz. Let’s see if this panel keeps its promises. The Samsung 27″ Odyssey G7 also known by the” nice “reference C27G75TQSU is one of the very few monitors to carry a VA panel displaying Quad HD definition and supporting a refresh rate of 240 Hz. 240 Hz monitors were confined to Full HD definition, while the fastest Quad HD monitors, like the excellent Asus VG27AQ, are content with a frequency of 144 Hz, even 165 Hz with a slight overclocking.

Samsung’s VA monitor panel is very curved, with a radius of 1 meter (1000R) to promote immersion. The manufacturer also announces a response time of 1 ms, a contrast of 2500:1, viewing angles of 178° and a peak brightness of up to 600 cd / m² in HDR. This monitor is also G-Sync and FreeSync Premium Pro certified, in addition of course to being HDR compatible. Finally, the ergonomics are very neat, with many orientation settings.

The 27-inch Samsung Odyssey G7 monitor sells for around € 650. Its only competitor is currently the AOC Agon PD27 which uses the same VA Quad HD 240 Hz panel, but the latter is rare in the trade and it is much more expensive (around 850 €). The most credible alternative for us remains the Asus VG27AQ monitor with its IPS Quad HD 165 Hz panel, admittedly a little less responsive, but also more affordable (around € 500).

Samsung 27″ Odyssey G7  Ergonomics

With the exception of the angular lower corners which give an aggressive side to the monitor, the Samsung Odyssey G7 screen is rather sober and ultimately quite versatile. The foot is particularly bulky. It should be 57 cm wide by 31 cm deep. Suffice to say that you have to plan a rather large office. The monitor is supplied with a fairly large external power supply which takes up quite a bit of space under the desk. The use of an external power supply makes it easier to replace it in the event of a problem.

This Samsung monitor offers 12 cm height adjustment and tilt adjustment between -9° and + 13°. The foot also allows rotation to ± 15° as well as a switch to portrait mode, the interest of which is more than questionable with such a curved slab. The rear of the chassis is made entirely of good quality ribbed black plastic, which reinforces the premium side. The connection is oriented downwards. The screen is compatible with VESA 100 x 100 mm mounts with a specific support provided.

The passage of the cables is particularly well designed. It allows to completely hide the cables which come out at the back of the foot. All of the connections are hidden behind a plastic cover. Small practical detail, the foot has a support for headphones. The connection consists of two HDMI inputs, a DisplayPort 1.4 input, a headphone output and two USB 3.0 ports. However, it does not have integrated speakers.

The Samsung Odyssey G7 27 “could not claim the name of a gaming monitor without the famous red, green and blue (RGB) LEDs which bring a little cheerfulness to this rough world. The two small protrusions in the lower corners of the panel do not not hiding speakers, but many LEDs that give character to the monitor. On the back, we find the famous halo called Samsung Odyssey Infinity Core Lightning; a whole program. The colors can be changed from the settings, just like the intensity and refresh rate.

The Samsung 27″ Odyssey G7  clickable joystick

The clickable joystick is always the most pleasant way to navigate the settings. Pressing the button turns on the monitor. Then, you have to move the cursor to the right to validate the choices, and to the left to go back. It is possible to change the source, the mode (presets) and access the settings (brightness, contrast, sharpness, overdrive, temperature, etc.). The menus are readable and navigation is quick. The four directions allow quick access to the sources, the most common settings (brightness, contrast) and the volume adjustment of the headphone output.

The 27-inch Samsung Odyssey G7 is not completely comfortable on our 140 x 60 cm desk, the fault of a very deep foot and cumbersome mounting system. With its depth of 31 cm, the foot occupies more than half of the desk. Fortunately, the aerial design frees up a lot of space, but the tile remains in our eyes too far from the wall (25 cm in the center). Better to have a desk that is 70 or 80 cm deep to get the most out of this monitor. The Quad HD definition of 2560 x 1440 px is quite fine on this 27-inch panel (resolution of 109 dpi) and allows to display a good level of detail.

By lowering the brightness to 29 to obtain white at 150 cd / m², the Samsung Odyssey C27G75TQSU consumes approximately 38 W, i.e. a relatively high consumption of 189 W / m², well above the average consumption of the monitors tested (100 W / m²). This consumption alone lost one star in the ergonomics of the monitor sub-rating. At minimum brightness (56 cd / m²), it still consumes 31 W. At maximum (372 cd / m²), consumption drops to 55 W.

Samsung 27″ Odyssey G7  Colors and contrast

The image quality of the Samsung Odyssey G7 is already very good with the factory settings. The temperature curve is perfectly stable over the entire spectrum and the average measured at 6270 K is not very far from the reference value of the video standard (6500 K). With an average delta E of 2.9, the colors can be considered faithful to those sent by the source. Only the red exceeds a delta E of 5, but the rendering is more than satisfactory overall. There is only the gamma curve which lacks stability slightly. The mean of 2.3 is slightly above the target value of 2.2. In practice, light grays are very slightly blocked.

We chose the sRGB mode then reduced the brightness to 29 to obtain a white close to 150 cd / m², but we were not able to correct the gamma defect since the monitor does not offer a specific setting to adjust this parameter. The temperature rises to 6420 K and is traced to the reference curve. The colors are a little more accurate (delta E at 2.7) with a red that goes below 5.

Calibrating the screen using a probe makes it possible above all to smooth the gamma curve, which is now perfectly stable on an average of 2.2. Color rendering is further improved (average delta E at 1.9), but red, yellow and cyan maintain a delta E greater than 3. You can download this color profile by following this link.

Samsung 27″ Odyssey G7  Contrast

With a native contrast of 2290: 1, the VA panel of this Samsung monitor is not among the best on the market, unlike the Textorm TX32 or the Philips BDM4037UW whose contrast ratio exceeds 4000: 1. However, this contrast is already much higher than that measured on IPS monitors (around 1200: 1 for the best). This monitor thus offers sufficiently deep blacks, even in complete darkness.

The average white homogeneity deviation is 8% on the 27-inch panel. There is thus no difference in luminosity perceptible to the eye. We did not notice any light leakage in the corners or any clouding (“cloud effect”) on our test model. VA technology offers fairly wide viewing angles, but there is still a variation in colors and brightness when we move 45° from the axis of the screen, which is not the case on IPS panels.

Samsung 27″ Odyssey G7  Reactivity

The Samsung Odyssey C27G75TQSU monitor does not use Pulse Width Modulation (PWM ) to adjust brightness; it is therefore devoid of flickering and does not cause headaches to those who are sensitive to this phenomenon. Among the options, Samsung offers a preset to reduce blue light in a software way.

This monitor is G-Sync and FreeSync Premium Pro certified between 20 and 240 Hz and therefore performs best when the graphics card sends between 20 and 240 frames per second. Between 20 and 60 Hz, the monitor uses the LFC system for Low Frame Compensation which quadruples, triples or doubles the number of images displayed in order to maintain a feeling of fluidity. At 20 frames per second, for example, the monitor operates at 80Hz and quadruples the number of frames.

At 30 frames, it operates at 90 Hz. It does not use the CFL only between 60 and 240 Hz. The supported range is therefore very wide and covers all uses. We will still recommend a high performance graphics card, like the GeForce RTX 3080 or the Radeon RX 6800XT in order to take advantage of the native Quad HD definition and a very high number of images. In all cases, the fluidity is there and the image does not suffer from problems of tearing or jerks (micro-stuttering). It is possible to activate the black image insertion system via backlight scanning (MBR for Motion Blur Reduction), but for this it is necessary to deactivate Adaptive-Sync (FreeSync and G-Sync).

Samsung 27″ Odyssey G7 Reactivity

We measured the afterglow time at 4.5 ms with the overdrive (“Response time” in the OSD) set to “fast”. The different settings offered (standard, fast or accelerated) have very little impact on the screen. The Samsung C25G75T is one of the most responsive VA monitors on the market. It rivals the faster models equipped with a TN panel, such as the Alienware AW2518HF 240 Hz flashed at 3 ms, but the VA panel offers better contrast. Finally, we measured the display delay (input lag) at 11.8 ms (at 60 Hz). There is therefore no lag between the mouse action and its repercussion on the screen.

Samsung 27″ Odyssey G7  STRONG POINTS:

  • 240 Hz VA Quad HD panel.
  • Reactivity.
  • Image well calibrated by default.
  • Contrast.
  • Finish.
  • Neat ergonomics.
  • FreeSync and G-Sync compatibility.

Samsung 27″ Odyssey G7 WEAK POINTS:

  • High consumption.
  • No gamma adjustment (which is however good by default).
  • Disappointing peak in brightness.
  • Requires a very powerful graphics card to use it properly.

Samsung 27″ Odyssey G7  FINAL CONCLUSION

With its low afterglow, very little ghosting, and reduced display lag, the Samsung Odyssey G7 27 inch is an excellent monitor for demanding and competitive gamers. Best of all, it is very well calibrated by default and also offers good native contrast. We can simply blame it for its high consumption and limited peak brightness, but it is a lesser evil if we consider the G-Sync and FreeSync compatibility as well as its excellent ergonomics.

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