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LG 34WK95U-W Monitor Review

Tested using Methodology v1.0
Reviewed Dec 19, 2018 at 09:13 am
Latest change: Writing modified Mar 01, 2022 at 09:41 am
LG 34WK95U-W Picture
Mixed Usage
Media Creation
HDR Gaming

The LG 34WK95U-W is a good 5k IPS LED monitor with good picture quality. It can get very bright in SDR, and it can display HDR content decently, but unfortunately, when viewed in a dark room, blacks will look grayish due to the mediocre contrast ratio and the bad local dimming. It has a large size screen and excellent resolution. It has a low input lag that makes it very responsive to your actions, but it's not flicker-free and doesn't support any variable refresh rate implementation to please serious gamers. Sadly, there are multiple reports of image retention on this monitor, which is a problem if you need it for office work or content creation.

Our Verdict

7.7 Mixed Usage

The LG 34WK95U-W is a good monitor for most uses. It's bright enough for a bright office, and it has wide viewing angles that allow you to easily share your work. It has a low input lag to please gamers and a fast response time to display fast content with little blur. However, its defining feature is its size and large resolution that lets you display more on the screen.

  • Large size and high resolution.
  • Image remains accurate at an angle.
  • Poor dark scene performance.
  • Bad ergonomics.
7.8 Office

The LG 34WK95U-W is a very good monitor for office use. It's a good choice for a bright office as it can fight glare. The large size and very high resolution allow you to place more of your work on the screen. The good viewing angles help the image remain accurate, and you can easily demonstrate your work to a colleague sitting next to you. Unfortunately, the ergonomics on the monitor are not good, so if you plan to adjust it frequently, you should consider VESA mounting it.

7.6 Gaming

The LG 34WK95U-W is a good monitor for gaming. It has a low input lag and is very responsive to your actions. However, its defining feature is its size and resolution. It has a 5k resolution, and you can display more of the game arena on your screen; this is an advantage over your opponents. Unfortunately, it doesn't support any variable refresh rate, and this can detract the more serious gamers from choosing it.

7.8 Multimedia

The LG 34WK95U-W is a good monitor for consuming multimedia. The input lag is very low, and the monitor reacts almost instantly to your inputs. The screen size and resolution allow you to display high-res multimedia content on its native resolution, and you can enjoy more details. The viewing angles are good, meaning you can share your image with others, and all will enjoy the same picture quality.

7.7 Media Creation

The LG 34WK95U-W is a good monitor for media creation. The screen size is large, and the resolution is very high and allows you to display much of your content on the screen at the same time. The viewing angles are good, and the low input lag makes it very responsive to your actions. Unfortunately, the monitor doesn't have good ergonomics, and you might be better off if you VESA mount it.

6.9 HDR Gaming

The LG 34WK95U-W is an okay monitor for HDR gaming. Unfortunately, the native contrast ratio is mediocre, and the bad local dimming can't help improve blacks in a dark room. The input lag is very low, and the resolution and size are excellent. The HDR peak brightness is good enough for playing HDR Games but not high enough for watching HDR movies.

  • 7.7 Mixed Usage
  • 7.8 Office
  • 7.6 Gaming
  • 7.8 Multimedia
  • 7.7 Media Creation
  • 6.9 HDR Gaming
  1. Updated Aug 17, 2020: Retested HDR peak brightness, color gamut, and color volume.
  2. Updated Jan 21, 2019: The Picture mode was incorrectly written as 'User' instead of 'Custom'
  3. Updated Dec 19, 2018: Review published.
  4. Updated Dec 17, 2018: Our testers have started testing this product.
  5. Updated Dec 17, 2018: Early access published.
  6. Updated Dec 15, 2018: The product has arrived in our lab, and our testers will start evaluating it soon.
  7. Updated Dec 10, 2018: We've purchased the product and are waiting for it to arrive in our lab.

Differences Between Sizes And Variants

We tested the 34" LG 34WK95U, which is the only model available. 

If someone comes across a different type of panel or if their monitor doesn't correspond to our review, let us know and we'll update the review. Note that some tests like the gray uniformity may vary between individual units.

Model Size Native Resolution Refresh rate
34WK95U 34'' 5k 60Hz
32UL950 32'' 4k 60Hz
32UD59-B 32'' 4k 60Hz
27UK650 27'' 4k 60Hz
34BK95U-W 34" 5k 60Hz, 3-year warranty

Our 34WK95U was manufactured in August 2018.

Update 01/17/2019: LG has also made the 34BK95U-W available. It appears to be the exact same monitor but with a standard 3-year warranty, instead of the 1 year on the 34WK95U.

Compared To Other Monitors

Comparison picture

The LG 34WK95U is a very good ultrawide monitor with a great resolution that will keep you happy in most uses.

See our recommendations for the best 34-49 inch monitors, the best monitors for Mac Mini, the best gaming monitors for PC, and the best 4k gaming monitors.

LG 34UC79G-B

The LG 34WK95U is a bit better than the LG 34UC79G-B overall. The 34WK95U has a higher resolution and size and supports HDR. The LG 34UC79G-B, on the other hand, is flicker-free has a lower input lag, and a much faster refresh rate and supports FreeSync, which is great for gaming.


The LG 34WK95U is slightly better overall than the ASUS ROG PG348Q. The LG 34WK95U has a higher resolution, supports HDR, and has slightly better gradient banding, whereas the ASUS is more of a gaming monitor that supports G-SYNC, is flicker-free, has less image blur, and supports FreeSync.

Samsung C34F791/CF791

The two monitors are different types. For most people, the IPS panel LG 34WK95U is better than the VA panel Samsung CF791. The LG supports HDR, has better viewing angles, and has a lower input lag. On the other hand, the Samsung CF791 has better blacks and will perform better in a dark room.

Dell U3818DW

The Dell U3818DW and the LG 34WK95U both have very similar performance. The Dell is flicker-free and has better ergonomics so you can easily place it to your liking. On the other hand, the LG supports HDR and has a slightly faster pixel response time that leaves a shorter blur trail in fast-moving content.

LG 32UL950-W

The LG 32UL950 is a bit better than the LG 34WK95U. The 32UL950 supports FreeSync, and has a more versatile stand that can be switched to portrait orientation. The 34WK95U has a wider HDR color gamut and better color volume, as well as a wider format screen that delivers a more immersive gaming experience, and is better for multitasking.

+ Show more

Test Results

Size 34"
Curved No
Curve radius N/A
Weight (without stand)
16.8 lbs (7.6 kg)
Weight (with stand)
19.8 lbs (9.0 kg)

The LG 34WK95U's design is good and is very similar to the LG 27UK650 and other LG monitors. It has a sturdy stand that supports it well and a clean back. Unfortunately, the ergonomics are poor, and positioning it to your liking will take some time. The build quality is good without any gaps or loose ends, and you should have no issues with this monitor.

17.6" (44.7 cm)
9.2" (23.4 cm)

The LG 34WK95U's stand supports the monitor well. The base is metal, while the rest is plastic. It's very similar to the LG 27UK650.

Height Adjustment
4.3" (10.9 cm)
Switch portrait/landscape No
Swivel Range N/A
Tilt Range -17.5° to 5°

This monitor has poor ergonomics. The tilt range is good, but the height adjustment is just decent, and there is no option to swivel or rotate. If you make frequent adjustments, you are better off VESA mounting it.

Wall Mount VESA 100x100

The back of the monitor is plain with a uniform glossy white finish. A small loop attached to the main pole helps with cable management. It's almost identical to the LG 27UK650.

0.5" (1.3 cm)

The borders are of average thickness, but they look elegant due to the large size of the monitor.

Thickness (with stand)
6.6" (16.8 cm)
Thickness (without stand)
2.2" (5.6 cm)

The monitor has an average thickness both when mounted on its stand and when measured without it.

Build Quality

The LG 34WK95U's build quality is good. It has a more premium feel than most of its LG peers due to the metal feet. You should have no issues with the build quality of this monitor.

Picture Quality
Picture Quality
LCD Type
Native Contrast
1,184 : 1
Contrast with local dimming
1,193 : 1

The LG 34WK95U-W has a mediocre contrast ratio and can't display deep blacks, just like the rest of the IPS monitors we've tested. The monitor is edge-lit (from the top), and when the local dimming feature is enabled, it doesn't raise the contrast ratio on our test picture. If you care about having a monitor with a good contrast, then consider the LG 35WN65C-B.

Picture Quality
Local Dimming
Local Dimming

The monitor has a local dimming feature that works both in SDR and HDR modes. Unfortunately, it can't always help blacks look deeper since the monitor is edge-lit, and thus the local dimming zones are vertical bands. This causes blooming in the entire band when only a small portion of the screen needs to be bright, like in the case of subtitles. It's very similar to the Dell U3219Q.

Picture Quality
SDR Peak Brightness
SDR Real Scene
384 cd/m²
SDR Peak 2% Window
246 cd/m²
SDR Peak 10% Window
358 cd/m²
SDR Peak 25% Window
391 cd/m²
SDR Peak 50% Window
393 cd/m²
SDR Peak 100% Window
395 cd/m²
SDR Sustained 2% Window
245 cd/m²
SDR Sustained 10% Window
358 cd/m²
SDR Sustained 25% Window
391 cd/m²
SDR Sustained 50% Window
393 cd/m²
SDR Sustained 100% Window
394 cd/m²

Update 01/21/2019:The SDR peak brightness was retested with the local dimming turned on.

The LG 34WK85U has great SDR peak brightness. It can fight bright room glare and will do great in bright office.

Settings tested: Custom-Calibrated

Picture Quality
HDR Peak Brightness
HDR Real Scene
408 cd/m²
HDR Peak 2% Window
237 cd/m²
HDR Peak 10% Window
346 cd/m²
HDR Peak 25% Window
372 cd/m²
HDR Peak 50% Window
374 cd/m²
HDR Peak 100% Window
574 cd/m²
HDR Sustained 2% Window
236 cd/m²
HDR Sustained 10% Window
346 cd/m²
HDR Sustained 25% Window
372 cd/m²
HDR Sustained 50% Window
373 cd/m²
HDR Sustained 100% Window
370 cd/m²

Update 08/17/2020: There was a mistake in our original testing, and we retested HDR peak brightness with local dimming on to remain consistent with all monitors. In this case, we also measured the peak brightness in 'HDR Vivid' picture mode since it's the mode most people would watch HDR content with. We also retested 7 other monitors, and some results changed.

Okay HDR peak brightness for the LG 34WK95U. The brightness level is alright for most HDR games, but unfortunately, it's not enough to deliver the creator's intent when it comes to HDR movies.

Settings tested: 'HDR Vivid' with local dimming on.

Picture Quality
Horizontal Viewing Angle
Color Shift from Left
Color Shift from Right
Brightness from Left
Brightness from Right
Black Level from Left
Black Level from Right
Curve Radius N/A

Decent horizontal viewing angles. Just like the Dell U3219Q, black levels remain constant no matter the angle at which you look at the monitor. However, you will notice the loss of color accuracy and the diminish in brightness as the angle gets closer to 40°.

Picture Quality
Vertical Viewing Angle
Color Shift from Below
Color Shift from Above
Brightness from Below
Brightness from Above
Black Level from Below
Black Level from Above

The LG 34WK95U-W has great vertical viewing angles. The image remains accurate up until 25°, at which point colors start to shift. At about 35°, the image has lost half of its brightness. This behavior is very similar to the Dell U3219Q.

Picture Quality
Gray Uniformity
50% Std. Dev.
50% DSE
5% Std. Dev.
5% DSE

The LG 34WK95U-W's gray uniformity is excellent. The sides look a little darker, but it's only slightly noticeable in normal use. There is almost no visible dirty screen effect, and you shouldn't have any issues while you browse the web or when you decide to watch a hockey game on your monitor.

In the darker shades, the uniformity is even better as it becomes very hard to spot any uniformity issues or any dirty screen effect. Very similar to the Dell U3219Q.

The monitor has a Uniformity option (only available in Custom and sRGB modes) that we recommend leaving it off as it reduces the overall brightness.

Picture Quality
Black Uniformity
Native Std. Dev.
Std. Dev. w/ L.D.

The LG 34WK95U has poor black uniformity, as we can see a lot of clouding around the screen. Backlight bleed is evident in the edges and the lower-left corner of the monitor. Unfortunately, when local dimming is enabled, there is still significant clouding in the vertical band where the test cross is due to the vertical local dimming zones.

This monitor's issues with black uniformity aren't noticeable in normal use. They're deliberately exaggerated here for our test.

Picture Quality
Pre Calibration
Picture Mode
193 cd/m²
Luminance Settings
Contrast Setting
RGB controls
Color Temperature
6,142 K
White Balance dE
Color dE

The LG 34WK95U's out-of-the-box accuracy is great. The 'sRGB' Picture mode is the most accurate one. Both the white balance and the color dE are under our threshold of 3, so few people will be able to spot the color inaccuracies. The color temperature is warmer than the 6500 K target, and the gamma is above the target curve for most of the input signal intensities resulting in slightly darker scenes.

Picture Quality
Post Calibration
Picture Mode
97 cd/m²
Luminance Settings
Contrast Setting
RGB Controls
Color Temperature
6,534 K
White Balance dE
Color dE

The LG 34WK95U-W has excellent color accuracy after calibration which was done on the 'Custom' Picture mode. White balance and color dEs are nearly perfect, and most people can't see any errors. The color temperature is very close to the target of 6500K, and gamma tracks the curve very closely.

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.

Picture Quality
SDR Color Gamut
sRGB xy
Adobe RGB xy

The LG 34WK95U has an excellent SDR color gamut. It practically covers the entire s.RGB gamut; this is great for daily usage. The coverage of the Adobe RGB color space is very good; however, it might still not be enough for those professionals who work in the wider Adobe RGB gamut.

s.RGB Picture Mode: Custom(calibrated)
Adobe RGB Picture Mode: Custom

Picture Quality
SDR Color Volume
sRGB in ICtCp
Adobe RGB in ICtCp

The LG 34WK95U-W has excellent color volume. Just like the Dell U3219Q, this monitor can display a full range of colors in various levels of luminance. Unfortunately, it can't display the dark shades well due to the not-so-great contrast ratio.

s.RGB Picture Mode: Custom
Adobe RGB Picture Mode: Custom

Picture Quality
HDR Color Gamut
Wide Color Gamut
DCI P3 xy
Rec. 2020 xy

Update 08/17/2020: There was a mistake in our original testing, and we retested the HDR color gamut with local dimming on to remain consistent with all monitors. We also retested 7 other monitors, and some results changed.

It has very good HDR color gamut, excellent coverage of the more common DCI P3 color gamut, and decent coverage of the wider Rec. 2020 color gamut. However, since it's above our 60% threshold, we consider it to have a wide color gamut.

DCI P3 Picture Mode: Vivid (HDR)
Rec. 2020 Picture Mode: Vivid (HDR)

Picture Quality
HDR Color Volume
DCI-P3 in ICtCp
Rec. 2020 in ICtCp

Update 08/17/2020: There was a mistake in our original testing, and we retested HDR color volume with local dimming on to remain consistent with all monitors. We also retested 7 other monitors, and some results changed.

Good HDR color volume, better than the LG 32UL950. The lack of high contrast ratio limits the color volume a bit, especially in the dark shades of colors.

DCI P3 Picture Mode: Vivid (HDR)
Rec. 2020 Vivid (HDR)

Picture Quality
Image Retention
IR after 0 min recovery
IR after 2 min recovery
IR after 4 min recovery
IR after 6 min recovery
IR after 8 min recovery
IR after 10 min recovery

There are reports of many users experiencing image retention on this monitor. Not everyone experiences this, but it's an issue of concern. If you need this monitor for office work or content creation, image retention is distracting because it will look like a window is still onscreen even after you've moved it or minimized it. There's no way to fix image retention; if you notice it, try returning the monitor or exchanging it for a new one.

Picture Quality
Color Depth
10 Bit

This monitor has excellent gradient handling. Gradients are displayed almost perfectly with very little or almost no banding.

Picture Quality
Color Bleed
Pixel row error
Pixel column error

This monitor has perfect color display, with no color bleed in rows or columns.

Picture Quality

This monitor has good reflection handling. The light-matte finish diffuses reflections on the screen, reducing their intensity. It's fine for most rooms, but in a bright room, reflections may be distracting. Very similar to the Dell U2717D.

Motion Blur
80% Response Time
5.1 ms
100% Response Time
14.2 ms
Best Overdrive Setting

Response Time Off
Response Time Normal
Response Time Fast
Response Time Faster

Excellent fast response time. The best Response Time setting is 'Fast', where we can see a little overshoot in some transitions but nothing too distracting. With the 'Normal' setting transitions are slower and with the 'Faster' setting, there's improvement in response time but also more overshoot. Most of the blur in the photo above is due to persistence.

Image Flicker
Flicker-free No
PWM Dimming Frequency
240 Hz
Black Frame Insertion (BFI)
BFI Maximum Frequency
BFI Minimum Frequency

This monitor dims the backlight using PWM. It's flicker-free only when the backlight is set at 100. Unfortunately, there's no option to introduce flicker to make the image crisper.

Refresh Rate
Variable Refresh Rate
Native Refresh Rate
60 Hz
Factory Overclock
Variable Refresh Rate
G-SYNC Compatible
VRR Maximum
VRR Minimum
VRR Maximum With OC
VRR Supported Connectors N/A

The LG 34WK95U-W has the very common native refresh rate of 60Hz. There is no variable refresh rate feature like FreeSync or G-SYNC. This is not an issue for most users but some competitive gamers might find this a deal-breaker.

Input Lag
Native Resolution
8.7 ms
Non-Native Res @ Native Refresh
8.9 ms
Native Resolution @ 60 Hz
8.7 ms
Variable Refresh Rate
10 bit HDR
8.9 ms
Black Frame Insertion (BFI)

The LG 34WK95U has excellent low input lag even when in HDR mode or when a non-native resolution is sent to the monitor. This should please most gamers as the monitor is very responsive.

Non-native resolution tested: 3440 x 1440 @ 60Hz.

Resolution and Size
Native Resolution 5120 x 2160
Aspect Ratio 21:9
Megapixels 11.1 MP
Pixel Density 163 PPI
Screen Diagonal 34.0"
Screen Area 415 in²

It's a large monitor with a 5k resolution that allows you to display many things on your screen at the same time, and it's great for multitasking.

To take advantage of the high resolution, you must use a DisplayPort connection. If you use an HDMI cable, due to bandwidth limits, the resolution is limited to a maximum of 3840 x 2160 @ 60Hz. In this case, the recommended resolution is 3440 x1440 @ 60Hz to respect the 21:9 aspect ratio.
The monitor, however, gives you an option to use the full resolution using two HDMI cables from the same computer by using its Picture By Picture option that makes the screen work as two separate 2560 x 2160 displays. To have a seamless operation as a single, large display, you'll need the use of third-party software like AMD's Eyefinity since the native windows driver can't avoid some tearing when a moving object crosses from one side of the screen to the other.

Total Inputs
DisplayPort 1 (DP 1.4)
Mini DisplayPort No
HDMI 2 (HDMI 2.0)
DisplayPort Out No
USB 2 (USB 3.0)
USB C 1 (USB, Thunderbolt 3)
Analog Audio Out 3.5mm 1
Microphone In 3.5mm No
Digital Optical Audio Out No
Analog Audio Out RCA No
Power Supply Internal

The USB Type-C port supports charging up to 85 Watts. Through the menu, you can choose which USB port (USB-C or USB-B) you'll use for upstream.

Additional Features
HDR10 Yes
Multiple input display

Update 1/28/2019: We added a clarification regarding the use of KVM.

The LG 34WK95U has integrated speakers and supports HDR10. It has a few additional features, some of which are typically found on most LG monitors:

  • Super Resolution+: an upscaling feature that tries to improve upscaling quality.
  • PBP (Picture By Picture): Used to display the output of two different inputs at the same time on the monitor. We also tested the monitor in this mode by connecting it to the same PC, and the PC recognized the monitor as two different displays.
  • DFC: Adjusts the brightness automatically according to the screen
  • Uniformity: (only available in Custom and sRGB) Adjusts uniformity of the image, but enabling it reduces the overall brightness, so we do not recommend it.

There are separate USB upstream ports that allow the monitor to function as a KVM switch by connecting your keyboard and mouse to the USB ports of the monitor. You can choose in the menu which USB (B or C) will serve as upstream. However, this requires accessing the OSD each time. Finally, the USB-C port supports power delivery up to 85W.

On-Screen Display (OSD)
In The Box

  • Manuals
  • CD-ROM
  • Power cable
  • USB-C cable
  • USB-B cable
  • HDMI cable