Samsung Odyssey G5 LC34G55T Monitor Review

Tested using Methodology v1.1
Reviewed Mar 12, 2021 at 09:42 am
Samsung Odyssey G5 LC34G55T Picture
7.5
Mixed Usage
7.1
Office
8.1
Gaming
7.5
Multimedia
7.4
Media Creation
7.1
HDR Gaming
Size 34"
Resolution 3440x1440
Max Refresh Rate
165 Hz
Pixel Type
VA
Variable Refresh Rate
FreeSync

The Samsung Odyssey G5 LC34G55T is a great gaming monitor. It's an ultrawide variant of the Samsung Odyssey G5 LC27G55T with a 21:9 aspect ratio and 3440x1440 resolution for a more immersive gaming experience. It's a great choice for dark room gaming thanks to its high contrast ratio, allowing it to display deep blacks. It has a 165Hz refresh rate, native FreeSync variable refresh rate (VRR) support, and quick response time. Input lag is extremely low, but unfortunately, there are a ton of bugs that cause the input lag to increase and VRR to stop working. Also, it's not good for sharing your screen with others as it has narrow viewing angles, and the stand only allows for limited tilt adjustments. It supports HDR10 but doesn't deliver a true HDR experience due to its low HDR peak brightness and lack of a wide color gamut.

Our Verdict

7.5 Mixed Usage

The Samsung Odyssey G5 34 is good for mixed usage. It's great for gaming because it has a high 165Hz refresh rate with a quick response time. Input lag is low, but some bugs cause it to increase. Its 34 inch screen and 1440p resolution make it decent for office use, but it has terrible ergonomics and narrow viewing angles. Sadly, HDR content doesn't look anything special as it can't display a wide color gamut and has mediocre HDR peak brightness.

Pros
  • Large 34 inch screen and 3440x1440 resolution.
  • 165Hz refresh rate with native FreeSync support.
  • Quick response time.
  • High contrast ratio to display deep blacks.
Cons
  • Stand only allows for limited tilt adjustment.
  • Bugs causes issues with input lag and VRR.
  • FreeSync doesn't work over HDMI.
7.1 Office

The Samsung Odyssey G5 34 is decent for office use. The 34 inch screen and 1440p resolution allow you to open multiple windows side-by-side and deliver clear images. It also has decent peak brightness and good reflection handling. Sadly, it has terrible ergonomics and narrow viewing angles, making it less-than-ideal for sharing your screen with others around you.

Pros
  • Large 34 inch screen and 3440x1440 resolution.
  • Decent SDR peak brightness and good reflection handling.
Cons
  • Narrow viewing angles.
  • Stand only allows for limited tilt adjustment.
8.1 Gaming

The Samsung Odyssey G5 34 is great for gaming. It has a high 165Hz refresh rate with a quick response time that results in smooth motion with fast-moving content. It has low input lag, but there are a ton of bugs with the monitor that cause the input lag to increase and VRR to stop working. On the upside, it has an excellent native contrast ratio to display deep blacks, great for dark room gaming.

Pros
  • 165Hz refresh rate with native FreeSync support.
  • Low input lag.
  • Quick response time.
  • High contrast ratio to display deep blacks.
Cons
  • Bugs causes issues with input lag and VRR.
  • FreeSync doesn't work over HDMI.
7.5 Multimedia

The Samsung Odyssey G5 34 is good for consuming media. The large screen and high resolution help deliver an immersive viewing experience. It also has an excellent native contrast ratio, which is great for watching movies in the dark. Sadly, it has narrow viewing angles, so the image looks inaccurate when viewing from the side.

Pros
  • Large 34 inch screen and 3440x1440 resolution.
  • Decent SDR peak brightness and good reflection handling.
  • High contrast ratio to display deep blacks.
Cons
  • Narrow viewing angles.
  • Stand only allows for limited tilt adjustment.
7.4 Media Creation

The Samsung Odyssey G5 34 is decent for content creators. Its 34 inch screen allows you to see more of your work, like your video timeline, and it has a high 1440p resolution. Unfortunately, it's a bit difficult to share your screen with coworkers and clients as it has terrible ergonomics and narrow viewing angles.

Pros
  • Large 34 inch screen and 3440x1440 resolution.
  • Decent SDR peak brightness and good reflection handling.
Cons
  • Narrow viewing angles.
  • Stand only allows for limited tilt adjustment.
7.1 HDR Gaming

The Samsung Odyssey G5 34 is decent for HDR gaming. Its high 165Hz refresh rate, quick response time, and low input lag help deliver a great gaming experience. Despite having an excellent native contrast ratio, it fails to deliver a true HDR experience as it has low HDR peak brightness and can't display a wide color gamut.

Pros
  • 165Hz refresh rate with native FreeSync support.
  • Low input lag.
  • Quick response time.
  • High contrast ratio to display deep blacks.
Cons
  • Bugs causes issues with input lag and VRR.
  • FreeSync doesn't work over HDMI.
  • Low HDR peak brightness.
  • Can't display wide color gamut.
  • 7.5 Mixed Usage
  • 7.1 Office
  • 8.1 Gaming
  • 7.5 Multimedia
  • 7.4 Media Creation
  • 7.1 HDR Gaming

Test Results

perceptual testing image
Design
Design
Style
Curved Yes
Curve Radius 1000R
Weight (without stand)
11.5 lbs (5.2 kg)
Weight (with stand)
12.3 lbs (5.6 kg)

The Samsung Odyssey G5 34 looks exactly like the Samsung Odyssey G5 LC27G55T, just in an ultrawide format. It has an all-black body made with basic plastic. It doesn't look as premium as the Samsung Odyssey G7 as it comes with a different, less-ergonomic stand. Although it's a gaming monitor, it shouldn't stand out in an office environment.

Design
Stand
Width
21.5" (54.7 cm)
Depth
10.7" (27.3 cm)

The V-shaped stand is wide enough to leave room so you can still place stuff in front of it. The plastic stand feels cheap and attaches to the monitor with basic clips.

1.2
Design
Ergonomics
Height Adjustment
0.0" (0.0 cm)
Switch Portrait/Landscape No
Swivel Range No swivel
Tilt Range -17.5° to 2.5°

Sadly, the Samsung G5 34's ergonomics are terrible. It only allows for limited tilt adjustment, and even at that, it's difficult to tilt the screen upwards. If you want an ultrawide monitor with better ergonomics, check out the Dell UltraSharp U4021QW.

Design
Back
Wall Mount VESA 75x75

The back of the Samsung G5 Odyssey 34 looks exactly like the Samsung Odyssey G5 LC27G55T. The VESA holes are visible, almost as if something is missing on the back, and they aren't centered. There's a small hook on the back of the stand for cable management.

Design
Borders
Borders
0.5" (1.2 cm)
Design
Thickness
Thickness (with stand)
10.2" (26.0 cm)
Thickness (without stand)
5.8" (14.7 cm)

Due to the aggressive curve of the screen, the Samsung Odyssey G5 34 is thicker than most monitors, so you need a deep desk to place it on.

7.0
Design
Build Quality

The Samsung C34G55T has okay build quality. It's made of basic-feeling plastic, and the stand feels cheaply-made. VESA holes are visible on the back and they aren't centered. You also need a lot of force to tilt the screen upwards. Overall, even though there's nothing wrong with it and nothing is falling off, there isn't anything premium about it either.

Picture Quality
8.6
Picture Quality
Contrast
Native Contrast
4557 : 1
Contrast With Local Dimming
N/A

The Samsung G5 Odyssey 34 has an excellent native contrast ratio. It displays deep blacks when viewed in the dark, which is expected from a VA panel. It's much higher than the Samsung Odyssey G5 LC27G55T, but this is something that varies between units. We also noticed the Samsung Odyssey G7 has a higher contrast than advertised, but again, this can vary from unit to unit.

The contrast is much higher than the advertised 2500:1, but we verified that this is correct. While we first measured it with our regular checkboard pattern method, we also measured it with full black and full white screens and received similar results. We then repeated the tests with different test equipment, and again got similar numbers. We measured the contrast of the monitor after calibration using the following settings:

  • Picture Mode: Custom
  • Brightness: 21
  • Contrast: 70
  • Sharpness: 60
  • Color
    • Red: 51
    • Green: 48
    • Blue: 47
  • Color Tone: Custom
  • Gamma Mode: 1
  • Black Equalizer: 13
  • Refresh Rate: 165Hz
  • Response Time: Standard
  • FreeSync: Off
  • Low Input Lag: On

If you have this monitor and notice a lower contrast ratio, let us know.

0
Picture Quality
Local Dimming
Local Dimming
No
Backlight
Edge

The Samsung G5 34 doesn't have a local dimming feature. The video above is provided for reference only.

7.3
Picture Quality
SDR Peak Brightness
SDR Real Scene
275 cd/m²
SDR Peak 2% Window
295 cd/m²
SDR Peak 10% Window
296 cd/m²
SDR Peak 25% Window
296 cd/m²
SDR Peak 50% Window
296 cd/m²
SDR Peak 100% Window
296 cd/m²
SDR Sustained 2% Window
295 cd/m²
SDR Sustained 10% Window
296 cd/m²
SDR Sustained 25% Window
296 cd/m²
SDR Sustained 50% Window
296 cd/m²
SDR Sustained 100% Window
296 cd/m²
SDR ABL
0.000

The Samsung Odyssey G5 34 has decent SDR peak brightness. It's a bit higher than the advertised 250 cd/m², and it remains extremely consistent across different content. Although it may not be enough to combat glare in a very well-lit room, it should be good enough for moderately-lit or dim rooms. We tested the SDR peak brightness after calibration in the 'Custom' Picture Mode. If you need a similar monitor that gets brighter, check out the ASUS TUF Gaming VG34VQL1B.

6.1
Picture Quality
HDR Peak Brightness
HDR Real Scene
295 cd/m²
HDR Peak 2% Window
322 cd/m²
HDR Peak 10% Window
331 cd/m²
HDR Peak 25% Window
332 cd/m²
HDR Peak 50% Window
332 cd/m²
HDR Peak 100% Window
332 cd/m²
HDR Sustained 2% Window
322 cd/m²
HDR Sustained 10% Window
331 cd/m²
HDR Sustained 25% Window
331 cd/m²
HDR Sustained 50% Window
332 cd/m²
HDR Sustained 100% Window
332 cd/m²
HDR ABL
0.002

The Samsung G5 34's HDR peak brightness is mediocre. It gets a bit brighter than in SDR, but it's not enough to truly make highlights stand out the way the creator intended. Unlike the Samsung Odyssey G5 LC27G55T, small highlights don't get dimmer as brightness remains consistent with different content. When you enable the HDR setting, it locks you out of any picture mode settings.

5.7
Picture Quality
Horizontal Viewing Angle
Color Washout From Left
31 °
Color Washout From Right
33 °
Color Shift From Left
52 °
Color Shift From Right
52 °
Brightness Loss From Left
30 °
Brightness Loss From Right
31 °
Black Level Raise From Left
19 °
Black Level Raise From Right
20 °
Gamma Shift From Left
11 °
Gamma Shift From Right
13 °

The horizontal viewing angle is disappointing, which is expected from a VA panel. The image looks inaccurate when viewing from the side, so it's not the best for co-op gaming.

5.2
Picture Quality
Vertical Viewing Angle
Color Washout From Below
28 °
Color Washout From Above
28 °
Color Shift From Below
45 °
Color Shift From Above
41 °
Brightness Loss From Below
29 °
Brightness Loss From Above
28 °
Black Level Raise From Below
9 °
Black Level Raise From Above
8 °
Gamma Shift From Below
13 °
Gamma Shift From Above
12 °

Like with the horizontal viewing angle, the Samsung G5 34's vertical viewing angle is disappointing. You lose image accuracy if you mount the screen above eye-level.

8.9
Picture Quality
Gray Uniformity
50% Std. Dev.
2.161 %
50% DSE
0.093 %
5% Std. Dev.
0.729 %
5% DSE
0.043 %

The Samsung C34G55T's gray uniformity is excellent. There aren't any signs of dirty screen effect in the center and uniformity is even better in near-dark scenes. Keep in mind that gray uniformity may vary between units.

6.7
Picture Quality
Black Uniformity
Native Std. Dev.
1.527 %
Std. Dev. w/ L.D.
N/A

The Samsung G5 34 has okay black uniformity. There's noticeable backlight bleed along the top and bottom edges. It's hard to tell in the cropped picture, but the backlight bleed is more noticeable on the left side, as you can see in the local dimming video.

8.9
Picture Quality
Pre Calibration
Picture Mode
Custom
Luminance
333 cd/m²
Luminance Settings
100
Contrast Setting
75
RGB Controls
50-50-50
Gamma Setting
Mode 1
Color Temperature
6863 K
White Balance dE
1.68
Color dE
1.39
Gamma
2.14

Our Samsung G5 34 has amazing out-of-the-box accuracy, but this can vary from unit to unit. Any white balance and color inaccuracies are hard to spot. Gamma follows the sRGB curve fairly well, but bright scenes are brighter than they should be. The color temperature is colder than our 6500K target, resulting in a blue tint.

9.6
Picture Quality
Post Calibration
Picture Mode
Custom
Luminance
100 cd/m²
Luminance Settings
18
Contrast Setting
70
RGB Controls
51-48-47
Gamma Setting
Mode 1
Color Temperature
6504 K
White Balance dE
0.48
Color dE
0.54
Gamma
2.19

After calibration, the Samsung G5 34's accuracy is remarkable. There are even fewer color and white balance inaccuracies. Gamma improved, but some really bright scenes are still too bright. Fortunately, the color temperature is extremely close to the target.

You can download our ICC profile calibration here. This is provided for reference only and shouldn't be used, as the calibration values vary per individual unit even for the same model due to manufacturing tolerances.

8.8
Picture Quality
SDR Color Gamut
sRGB xy
98.7 %
Adobe RGB xy
77.5 %
sRGB Picture Mode
Custom
Adobe RGB Picture Mode
Custom

The Samsung Odyssey G5 34's SDR color gamut is excellent. It has near-perfect coverage of the commonly-used sRGB color space. It also has good coverage of the Adobe RGB color space used in photo editing.

9.1
Picture Quality
SDR Color Volume
sRGB In ICtCp
98.6 %
Adobe RGB In ICtCp
83.4 %
sRGB Picture Mode
Custom
Adobe RGB Picture Mode
Custom

The SDR color volume is fantastic. It displays colors at a wide range of luminance levels, but it still has some trouble with really bright colors.

6.6
Picture Quality
HDR Color Gamut
Wide Color Gamut
No
DCI P3 xy
77.1 %
Rec. 2020 xy
55.5 %
DCI P3 Picture Mode
HDR On
Rec. 2020 Picture Mode
HDR On

The Samsung Odyssey G5 34 has an okay HDR color gamut, but it's not considered a wide color gamut for HDR content. It has good coverage of the DCI P3 color space used in most content, but its coverage of the wider Rec. 2020 is disappointing.

6.0
Picture Quality
HDR Color Volume
DCI-P3 In ICtCp
70.1 %
Rec. 2020 In ICtCp
50.6 %
DCI P3 Picture Mode
HDR On
Rec. 2020 Picture Mode
HDR On

The Samsung G5 Odyssey 34 has a disappointing HDR color volume, mainly limited by its lack of a wide color gamut. It has trouble displaying really bright colors.

10
Picture Quality
Image Retention
IR After 0 Min Recovery
0.00 %
IR After 2 Min Recovery
0.00 %
IR After 4 Min Recovery
0.00 %
IR After 6 Min Recovery
0.00 %
IR After 8 Min Recovery
0.00 %
IR After 10 Min Recovery
0.00 %

Our unit of the Samsung Odyssey G5 34 shows no signs of temporary image retention, but this can vary between units.

9.8
Picture Quality
Gradient
Color Depth
10 Bit

The Samsung G5 34 has remarkable gradient handling. You shouldn't notice any banding in most content.

10
Picture Quality
Color Bleed
Pixel Row Error
0.001 %
Pixel Column Error
0.001 %

There are no visible signs of color bleed on the Samsung Odyssey G5 34.

7.6
Picture Quality
Reflections
Screen Finish
Matte
Total Reflections
5.2 %
Indirect Reflections
3.2 %
Calculated Direct Reflections
2.0 %

The Samsung C34G55T has good reflection handling. It shouldn't be an issue if there's a moderate amount of light on the screen, but it struggles in really bright rooms as the reflections are stretched across the screen.

7.5
Picture Quality
Text Clarity
Sub-Pixel Layout
RGB

Text clarity on the Samsung G5 Odyssey 34 is good. Enabling Windows ClearType (top photo) slightly improves the appearance of diagonal lines, like on R and G, but makes straight lines a bit thinner.

Motion
7.8
Motion
Response Time @ Max Refresh Rate
Best Overdrive Setting
Fastest
Rise / Fall Time
6.1 ms
Total Response Time
14.4 ms
Overshoot Error
3.0 %
Dark Rise / Fall Time
12.0 ms
Dark Total Response Time
22.6 ms
Dark Overshoot Error
0.0 %

Overdrive Setting Response Time Chart Response Time Tables Motion Blur Photo
Standard Chart Table Photo
Faster Chart Table Photo
Fastest Chart Table Photo

The Samsung G5 34 has a very good response time at its max refresh rate of 165Hz. Its total response time is on the slower side, especially in dark transitions, so you may notice motion smear in dark scenes. The recommended overdrive setting is 'Fastest' because it has the quickest response time, but as you can see in the photo above, there's still some motion blur trail.

8.1
Motion
Response Time @ 60Hz
Best Overdrive Setting
Fastest
Rise / Fall Time
5.5 ms
Total Response Time
13.5 ms
Overshoot Error
3.6 %
Dark Rise / Fall Time
11.0 ms
Dark Total Response Time
21.2 ms
Dark Overshoot Error
0.0 %

Overdrive Setting Response Time Chart Response Time Tables Motion Blur Photo
Standard Chart Table Photo
Faster Chart Table Photo
Fastest Chart Table Photo

The response time at 60Hz of the Samsung G5 34 is great, even better than the Samsung Odyssey G5 LC27G55T. It has a quicker total response time than the other settings, but once again, the response time in dark transitions is slow. Like with its response time at 165Hz, the recommended overdrive setting is 'Fastest'. Also, there's the most overshoot with this setting, so you still may notice motion blur.

10
Motion
Image Flicker
Flicker-Free Yes
PWM Dimming Frequency
0 Hz

The Samsung Odyssey G5 34 has a flicker-free backlight, which helps reduce eye strain, and helps eliminate image duplication in fast-moving content.

5.3
Motion
Black Frame Insertion (BFI)
Black Frame Insertion (BFI)
Yes
BFI Maximum Frequency
165 Hz
BFI Minimum Frequency
165 Hz

The Samsung G5 Odyssey 34 has a Black Frame Insertion feature, but it only flickers at 165Hz, no matter what the refresh rate is set at. If you set the refresh rate in the monitor's on-screen display (OSD) to anything other than 165Hz, it completely disables the BFI setting. If you change the refresh rate through your PC's settings instead, you can enable the BFI setting, but it only flickers at 165Hz. Note that the BFI score is based on the range at which the BFI works, and not its actual performance.

9.2
Motion
Refresh Rate
Native
165 Hz
Max Refresh Rate
165 Hz
Variable Refresh Rate
Yes
FreeSync
Yes
G-SYNC
Compatible (Tested)
VRR Maximum
165 Hz
VRR Minimum
< 20 Hz
VRR Supported Connectors DisplayPort

The Samsung G5 34 has a high 165Hz refresh rate with native FreeSync support, and it's also G-SYNC compatible. However, we ran into some issues with the refresh rate and VRR. If you set your PC's refresh rate to 60Hz and enable FreeSync in the monitor's OSD, VRR doesn't work properly and there's screen tearing throughout. However, if you set both the monitor's and PC's settings to 165Hz, there aren't any VRR issues throughout the entire refresh rate range.

Also, if you set the monitor's refresh rate to 120Hz, there aren't any issues with VRR. However, if you set it to 100Hz, VRR only works between 60-100Hz. The max refresh rate over HDMI is 100Hz, and FreeSync doesn't work at all over HDMI; we confirmed with our Xbox Series X and it showed VRR as incompatible with the monitor.

Another anomaly that we encountered is when turning off FreeSync in the OSD, G-SYNC was still enabled in the NVIDIA Control Panel. Normally, if FreeSync is enabled in the OSD, we don't have access to the response time and refresh rate settings on the monitor, but with G-SYNC enabled in the Control Panel, we had access to those settings on the monitor. We also confirmed that G-SYNC works properly, but once we enabled FreeSync and disabled it again, G-SYNC was also disabled in the Control Panel.

Essentially, if you plan on using VRR, make sure your refresh rate setting on the monitor is 120 or 165Hz; otherwise, it won't work properly. If you have this monitor and experience the same issues, let us know.

Inputs
9.5
Inputs
Input Lag
Native Resolution
4.0 ms
Native Resolution @ 60Hz
9.4 ms
Variable Refresh Rate