27'' Class 4K UHD IPS LED Monitor with VESA DisplayHDR 400 (27'' Diagonal)

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27" Class 4K UHD IPS LED Monitor with VESA DisplayHDR 400 (27" Diagonal)
$ 549.99
#1 UHD Monitor Brand in the U.S. for 3 years in a row*1

#1 UHD Monitor Brand in the U.S. for 3 years in a row*

*The NPD Group, Inc., U.S. Weekly Retail Tracking Service, Monitors, Display Resolution: 3840 x 2160, Based on Dollars, 52 Weeks Ending Apr 4, 2020 vs. same weeks in 2018 & 2019.
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.

Radeon FreeSync?*

Radeon FreeSync?* reduces the tearing and stuttering that occur between a graphic card's frame rate and a monitor's refresh rate enabling smoother motion and less stuttering in demanding games.

Dynamic Action Sync?

Gamers can experience optimized, fast-pace gaming with Dynamic Action Sync?. Dynamic Action Sync? is a feature that minimizes input lag so the game play in RTS games is more responsive.

Black Stabilizer?

Keep visibility even in dark scenes. LG's Black Stabilizer? senses dark scenes and helps make it brighter so that you can find the enemies hiding and waiting to attack your player in the dark.

*FreeSync is available when connected via HDMI or DisplayPort.
*Software download required to enable OnScreen Control. For download details, visit LGUSA.com/OnScreenControlSupport.


    • Screen Size
    • 27"
    • Panel Type
    • IPS
    • Color Gamut (Typ.)
    • sRGB 99% (CIE1931)
    • Color Depth(Number of Colors)
    • 1.07B
    • Pixel Pitch(mm)
    • 0.1554 x 0.1554 mm
    • Response Time (GTG)
    • 5ms (GtG at Faster)
    • Refresh Rate
    • 60Hz
    • Aspect Ratio
    • 16:9
    • Resolution
    • 3840 x 2160
    • Brightness
    • 350cd (typ) / 280cd (Min)
    • Contrast Ratio
    • 700:1 (Min.), 1000:1 (Typ.)
    • Viewing Angle
    • 178o(R/L), 178o(U/D)
    • Surface Treatment
    • Anti Glare, 3H


    • HDMI
    • Yes x 2
    • DisplayPort
    • Yes x 1
    • USB Type-C
    • Yes
    • Headphone Out
    • Yes
    • USB Down-stream
    • YES(2ea/ver3.0)


    • Type
    • External Power(Adapter)
    • Input
    • 100-240Vac, 50/60Hz
    • Power Save/Sleep Mode (Max)
    • Less than 0.5W (HDMI/DP input condition)
    • DC Off (Max)
    • Less than 0.3W
    • Power Consumption (Typ.)
    • 40W
    • Power Consumption (Max.)
    • 130W


    • Color Weakness
    • Yes
    • Adaptive Sync
    • RADEON FreeSync?
    • Black Stabilizer?
    • Yes
    • Dynamic Action Sync?
    • Yes
    • Flicker Safe
    • Yes
    • Smart Energy Saving
    • Yes
    • H/W Calibration Ready (True Color Pro)
    • Yes
    • Reader Mode
    • Yes
    • Super Resolution +
    • Yes
    • Color Calibrated
    • Yes
    • Dual Controller
    • Yes
    • On Screen Control (OSC)
    • Yes
    • HDR (High Dynamic Range)
    • Yes (HDR10)
    • VESA DisplayHDR?
    • DisplayHDR? 400
    • HDR Effect
    • Yes


    • Speaker
    • Yes
    • Speaker Output
    • 5W
    • Maxx Audio
    • Yes
    • Speaker Channel
    • 2ch


    • With Stand (WxHxD)
    • 24.1" x 22.0" x 9.2" (Up), 24.1" x 17.7" x 9.2" (Down)
    • Without Stand (WxHxD)
    • 24.1" x 14.4" x 1.8"
    • Shipping Dimensions (WxHxD)
    • 27.2" x 8.2" x 19.4"
    • With Stand Weight
    • 13.5 lbs
    • Without Stand Weight
    • 10.6 lbs
    • Shipping Weight
    • 19.8 lbs


    • Display Position Adjustments
    • Tilt/Height/Pivot


    • Wall Mount Size (mm)
    • 100 x 100 mm
    • Display Port
    • Yes
    • HDMI
    • Yes
    • USB Type-C
    • Yes


    • Limited Warranty
    • 1 Year Parts and Labor
    • UPC
    • 719192625655

What people are saying

Rated 1 out of 5 by from Disappointing I use a Microsoft Display Adapter to get wireless connectivity on all my monitors. It works perfectly on all other monitors and TVs, but for some reason the same adapter does not work with this monitor. It goes not even show up as being present. This monitor cost much more than my Dell, and it cannot be accessed wirelessly. Very disappointed in this.
Date published: 2020-08-29
Rated 4 out of 5 by from Nice monitor, don't know about Linux Chose this to go with MacBook they gave me at work and the USB-C port. I was very interested in the split screen feature. However, I my personal computer is Linux, and the software downloads are only Mac and Windows. And the electric plugs are very wide, they block adjoining sockets on my power bar. Other than that, the picture is very nice, and the 4k is very clear even for small text.
Date published: 2020-08-29
Rated 1 out of 5 by from Disappointing, especially for the price point I'm very disappointed in the quality of this monitor. I'm a professional designer and was hopeful to use this monitor to connect with my 16" Macbook Pro. I purchased this model specifically for the USB-C single cord connectivity, and the picture quality/colors and settings available are abysmal when connected via USB-C only. I can't adjust display settings like contrast, HDR, or picture mode. When I first received the monitor, it was flickering nonstop when I plugged it into my computer and now will randomly restart throughout the day, interrupting my workflow. Reached out about returns and was told the product is final sale/doesn't qualify for returns. The day I received the monitor, my first time plugging it in it was flickering nonstop and
Date published: 2020-08-25
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Ask your questions. Share your answers.
Please review the detailed product information and help guides in the
Product Support section for this product prior to posting a question.

Does this model have built in speakers? I am seeing conflicting information online.

Asked by: Anonymous
The LG 27'' Class 4K UHD IPS LED Monitor with VESA DisplayHDR 400 (27'' Diagonal), Model # 27UL850-W has 2 x 5W built-in speakers...^IFV
Answered by: Ivanf
Date published: 2020-10-23

Hooked up w/USB-C cable to my Macbook Pro 16" to 27UL850. Colors are true on MBP but on LG, reds and orange are neon in color. If I switch to HDMI, colors look good. Is monitor faulty with USB-C or Do I not know how to configure? Tried vivid in setttings.

Asked by: Perplexed Business Guy
Same for me with Mac and USB-C -- I turned off the HDR and the neon colors calmed down to normal.
Answered by: abcdef123456
Date published: 2020-08-31

Is the SpyderX Elite calibration tool a good combination with this monitor for photo editing?

Asked by: JimFromAZ
Using the SpyderX Elite calibration tool for the LG 27'' Class 4K UHD IPS LED Monitor with VESA DisplayHDR 400 (27'' Diagonal), Model # 27UL850-W is a matter of preference. There are many other calibration tools available to use with the monitor and we do not recommend one over another...^IFV
Answered by: Ivanf
Date published: 2020-04-08

If I plug in my laptop to the USB-C port of the monitor and the picture is at max quality (4k at 60 hz), will the other USB-A ports on the monitor continue to function at USB 3 speeds, or are they downgraded to USB 2.0?

Asked by: Jrdavis
USB upstream and downstream ports usually refer to ports on a USB hub. An upstream port connects to the host device (PC) while the downstream ports are where you plug in peripheral devices (thumb drives, printers, etc.). On the LG 27'' Class 4K UHD IPS LED Monitor with HDR 10 (27'' Diagonal), Model # 27UK850-W, the USB Upstream port is the USB-C port. A powered USB hub will not affect the performance of the devices connected to it (ie. it will not make them transfer any faster). However, If you have several higher powered USB devices trying to work off a non-powered USB hub (a USB hub that only gets its power from the USB port on your PC, which is relatively low), then those devices can fail to work, as they don't have enough power to run them. Non-Powered USB Hubs are more for low power draw devices. But if your talking about performance being transfer speed, then no (unless it doesn't work at all). All devices connected through a USB hub share the bandwidth available to that hub. if you use a USB 3.0 port with a USB 2.0 device, the transfer speed will only top out at 480 Mb/s...^IFV
Answered by: Ivanf
Date published: 2020-05-30

Can this monitor be wall mounted and which wall mount accessory do I need

Asked by: YIEH
The 27UL850-W is compatible with mounts that use the VESA pattern 100 x 100 mm.
Answered by: ChrisPSM
Date published: 2020-04-27

Hi, When was this monitor release? Thank you,

Asked by: cloud612
The LG 27'' Class 4K UHD IPS LED Monitor with VESA DisplayHDR 400 (27'' Diagonal), Model # 27UL850-W is a 2019 model...^IFV
Answered by: Ivanf
Date published: 2020-03-23

Will this monitor charge a LG Gram 17 laptop connected via its Thunderbolt 3 port without degrading performance? I.e., will the laptop function at it's peak performance without throttling down the CPU? I plan on using the Gram 17 with it screen turned off

Asked by: Matt44
The USB Type-C™ port on the LG 27'' Class 4K UHD IPS LED Monitor with VESA DisplayHDR 400 (27'' Diagonal), Model # 27UL850-W allows 4K video display, data transfer and laptop/mobile device charging, all at the same time over a single cable. IT supports USB Power Delivery (PD) and delivers 60W of power...^IFV
Answered by: Ivanf
Date published: 2019-10-22

I will be connecting a new MacBook Pro to the monitor. Does the USB-C port have power? If not, which monitors do have power for the USB-C 

Asked by: Terrya
The USB-C port on this LG 27'' Class 4K UHD IPS LED Monitor with VESA DisplayHDR 400 (27'' Diagonal), Model # 27UL850-W supports USB PD (Power Delivery) and will deliver 60W...^IFV
Answered by: Ivanf
Date published: 2020-05-16
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