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Key Features

  • 27 Inch 4K UHD IPS Monitor
  • HDR 10
  • USB Type-C™
  • sRGB 99% Color Gamut
  • AMD FreeSync™ Technology
  • 3-Side Virtually Borderless Design
Suggested Price


Suggested Price
Promotion Price*


Promotion Price*
HDR 10

   HDR 10   

To more fully realize content creators’ vision, this monitor is compatible with industry-standard HDR10 high dynamic range, supporting specific levels of color and brightness that exceed the capabilities of ordinary monitors.

*Depending on the Windows 10 OS settings, HDR content may not be displayed accurately. Please check the HDR On/Off setting of Windows. The HDR setting of Windows defaults to "On" and should be set to "Off" when not viewing HDR content. Images simulated.
(A software update will be made available)

HDR Effect

HDR Effect

The HDR Effect helps transform non-HDR content into high quality video that looks like HDR through its picture quality algorithm.

*Images simulated.

sRGB 99%252525252525252525 (Typ.)

IPS with sRGB 99% (Typ.)

This monitor, with 99% coverage of the sRGB spectrum, is a great solution for photographers, graphic designers or anyone looking for highly accurate color.

HDCP 2.2 Compatible

HDCP 2.2 Compatible

Connect with confidence: This LG 4K monitor is compatible with the latest HDCP 2.2 copy protection, so it will display video from 4K streaming services, game consoles and Ultra HD Blu-ray disc players.

27UK850-W Virtually Borderless Design

Virtually Borderless Design

The ultra-thin bezel on three sides of this streamlined display offers a virtually borderless visual experience, without distraction from the precise, gorgeous image. A sleek addition to any desktop.

USB Type-C™

USB Type-C™

Offering a new generation of convenience, USB Type-C™ports allow 4K video display, data transfer and laptop/mobile device charging, all at the same time over a single cable. Reduce cord clutter and increase efficiency with USB Type-C™.

27UK850-W AMD FreeSync™

AMD FreeSync™

With FreeSync*, gamers can experience seamless, fluid movement throughout hi-res, fast-paced games. FreeSync virtually eliminates screen tearing and stuttering.

*FreeSync is only available when it is connected to Display Port or HDMI.

Advanced Gaming Features

Advanced Gaming Features

Serious gaming features for serious gamers. Quickly optimize monitor settings to activate Black Stabilizer to reveal superior detail in dark scenes while the Dynamic Action Sync feature assures smooth, fluid gaming action.

On-Screen Control

On-Screen Control

On-Screen Control puts a host of essential monitor settings into a handy window for quick, easy access. Volume, brightness, picture mode presets, Screen Split 2.0 and Dual Controller and more can now be adjusted with just a few clicks of the mouse, instead of hard buttons on the monitor.

Learn More


Watch how the On-Screen Control feature can help configure your display for maximum organization and efficiency.

On-Screen Control

Software download required to enable OnScreen Control. For download details, visit

Ergonomic Stand

Ergonomic Stand

The sleek design of LG premium monitors is accentuated by the ArcLine stand. The smooth curve of the base provides stability, assuring dependable performance with a touch of elegance.


What People Are Saying

Rated 5 out of 5 by from Perfect desk top monitor for 2018. MacBook Pro Just set this up the 27" UK850-W to my MacBook Pro using the thunderbolt USB c port with the supplied cable. Very easy to set up, picture quality matches the MacBook Pro with a minor tweaking to color and brightness, couldn't be easier. Bought this after reading a number of positive reviews for photo editing
Date published: 2018-11-15
Rated 5 out of 5 by from Super Display I purchased this monitor to match my iMac 27 " computer to have the same high quality display. I have thousands of underwater photos as a SCUBA diver, so deal with lots of pictures. The LG monitor is a super sharp and bright display and I like its features to be photo or landscape mode. It is a match for the Mac display. I did a lot of research on this product and it paid off. Very happy with it!
Date published: 2018-09-10
Rated 5 out of 5 by from 27" 4K Monitor from LG I bought a competitors model first, and had to send it back due to malfunction right out of the box! I upgraded to the LG 27UK850-W Monitor! It has a very bright and clear screen! It is a great monitor which I feel will last a long time!
Date published: 2018-09-08
Rated 5 out of 5 by from Fantastic monitor Best monitor I have ever used, I wish they had these 30 years ago! The clarity,color and sharpness exceeded my expectations. Set up was easy and the OnScreen Control feature facilitates using all the features and benefits of this monitor.
Date published: 2018-09-07
Rated 5 out of 5 by from Amazing picture quality and flawless integration Purchased this monitor to go along my new MacBook Pro. The usb-c integration makes this connection flawless. The picture quality is just simply amazing.
Date published: 2018-09-02
Rated 5 out of 5 by from Prefect with the newer Macbook Pro I like that you can connect to the USB C and charge your Macbook Pro. The display quality is excellent.
Date published: 2018-08-04
Rated 4 out of 5 by from Great monitor - poor controls The monitor has excellent characteristics except for two important flaws. You cannot control the volume and brightness through your keyboard.
Date published: 2018-07-21
Rated 5 out of 5 by from Good for my macbook pro Best quality monitor ever. Can't compare with cheap brand monitors!
Date published: 2018-06-29
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Ask your questions. Share your answers.
Please first review the detailed product information and help guides in the Product Support section for this product prior to posting a question.

My son wants to buy a gaming monitor for his new Xbox is this a good obtion ?      Thank you 

Asked by: Elisa 77
The LG 27" Class 4K UHD IPS LED Monitor with HDR 10 (27" Diagonal), Model # 27UK850-W is not specifically designed as a Gaming Monitor, it is more suitable as a multi-purpose monitor but it does support HDR10 and it is a 4K monitor that has a native resolution of 3840x2160 and a refresh rate of 60 Hz and all its HDMI ports are HDMI version 2.0 and all are HDCP 2.2 compliant. It also features advanced gaming features such as Black Stabilizer that reveals superior detail in dark scenes and the Dynamic Action Sync feature that assures smooth fluid gaming action...^IFV
Answered by: LGJoel
Date published: 2018-11-14

With only 350 nits of brightness does this even meet VESA's DisplayHDR 400 specification?

Asked by: knerl
As you have pointed out, the Typical Brightness for the LG 27" Class 4K UHD IPS LED Monitor with HDR 10 (27" Diagonal), Model # 27UK850-W is listed as 350 nits and covers 99% of the sRGB Color Gamut spectrum and has a 10bit (8bit + A-FRC) panel. The performance criteria for VESA DisplayHDR 400 for White Luminance Performance has a minimum requirement for the Full-screen Flash duration of 320 nits and a minimum Color Gamut in CIE 1976 u, v format of 95% ITU-R BT.709 (Color Gamut coverage based on both BT.709/sRGB and DCI-P3 tp provide greater assurance of improved color output)...^IFV
Answered by: LGJoel
Date published: 2018-10-24

I have a NVIDIA GeForce GT 640 graphics card and I do not do gaming on my PC will this be good for photo editing and correct colors or must I upgrade my graphics card? I seen a new card will cost me as much as the monitor and I never do gaming so not sure

Asked by: Dvelas69
Hi Dvelas69. Regrettably, since we do not manufacture graphics cards, we cannot advise you on them or how they will perform. The LG 27" Class 4K UHD IPS LED Monitor with HDR 10 (27" Diagonal), Model # 27UK850-W. How suitable this monitor will be for photo editing will depend on whether you're a beginner or a professional and on what your needs are. There are as many photographers and graphic designers as there are different levels of expectations. A professional editor won't have the same level of expectations as a beginning photographer who tries to do things the right way. With 99% coverage of the sRGB spectrum, this monitor is a great solution for photographers, graphic designers or anyone looking for highly accurate color if you have the right if you have a graphics card and wirings able to display 4K, especially in 60 hz for video editors. The monitor has 10-bit (8bit + A-FRC) Color Depth, a 16:9 Aspect Ratio, a Pixel Pitch of 0.1554 x 01,1554, a resolution of 3840 x 2160 (4K) and a brightness of 350 nits (Typical) and a minimum of 280 nits. It has a PPI (pixels per inch) of 163.18. Professional or demanding amateur photographers typically look for a monitor with at least 120 PPI or more and a pitch that enables very good reading of the texts. Pixel Pitch is used to define pixel size so the smaller the pitch, the less visible the pixels. The human eye is unable to see a difference in the accuracy of details at 240 PPI on an A4 page held at 12 inches, but we watch our screens from at least twice this distance. A screen at 120 PPI would give the impression of being perfectly smooth with visible pixels from 25 inches. So with its resolution and pixel pitch and PPI, the 27UK850-W will be a great monitor...^IFV
Answered by: LGJoel
Date published: 2018-09-28

If the LG 27UK850-W is connected to a Thunderbolt 3 laptop over USB-C, what is the maximum refresh rate supported by the monitor at 4K resolution, 30hz or 60hz?

Asked by: Jhon_Griffhon
DisplayPort leverages the Alternate Mode Functional Extension of the USB Type-C™ port on the LG 27" Class 4K UHD IPS LED Monitor with HDR 10 (27" Diagonal), Model # 27UK850-W, and will allow 4K @ 60 Hz. You will need an adapter to make the connection and that may or may not affect the refresh rate so be sure to check the specifications for the adapter you use...^IFV
Answered by: LGJoel
Date published: 2018-11-08

Are the HDMI ports HDMI 2.0? And, is Free Sync supported through the HDMI ports or only the display port?

Asked by: Nicklax31
All the HDMI ports on this LG 27" Class 4K UHD IPS LED Monitor with HDR 10 (27" Diagonal), Model # 27UK850-W are HDMI Version 2.0 and they are all HDCP 2.2 compliant. AMD FreeSync™ is supported through both the DisplayPort and HDMI ports...^IFV
Answered by: LGJoel
Date published: 2018-07-27

Planing to buy this product but does it support HDR for my PS4 PRO 

Asked by: Jake152
The LG 27" Class 4K UHD IPS LED Monitor with HDR 10 (27" Diagonal), Model # 27UK850-W supports HDR10 as indicated in the title. The HDR format known as "HDR10" is the most wide-spread and easy-to-implement HDR format...^IFV
Answered by: LGJoel
Date published: 2018-06-26

I just purchased the LG 27UK850 monitor. Works great. The On Screen Control software however gets hung up and never works. Updated online and still no luck. Any solutions?

Asked by: jasonkyler
So sorry to see you are having trouble with the On-Screen control feature of the monitor. We would be happy to have a computer specialist look into this for you. Please give us a call at 800-243-0000. ^CP
Answered by: ChrisPSM
Date published: 2018-06-22

If I connect two computers to this monitor and also connect a wired keyboard to the USB what would happen? Would both computers receive the keyboard inputs? And would this change if I was using split screen?

Asked by: kevinr22
The LG 27" Class 4K UHD IPS LED Monitor with HDR 10 (27" Diagonal), Model # 27UK850-W has 2 x HDMI ports, a DisplayPort and a USB Type-C port on it (DP Alternate Mode / Data). Regrettably, we do not have details about your USB Keyboard to determine if you can use it to control two computers that are connected simultaneously to the monitor. Regardless of whether you use two HDMI ports on an HDMI port and the DisplayPort on the monitor, each is seen as a separate, single video source and you would need to switch the input source to view each one at a time since the monitor does not support Picture-by-Picture (PBP) which would split the screen in half and allow you to view two input sources simultaneously. For the Screen Split 2.0, you will need to download and install the OnScreen Control software. PIP separates the screen into two parts.One source device is displayed on the main screen at the same time another source device is displayed in an inset window...^IFV
Answered by: LGJoel
Date published: 2018-08-04
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