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A Review of the LG 27MU67-B 27″ Class 4K UHD IPS LED Monitor – 27MU67

by on August 21, 2015
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Manufacture
Overview

LG is no stranger to assembling some absolutely excellent display screens, whether they be in TVs, smartphones or PC monitors, and the LG 27MU67-B 27" Class 4K UHD IPS LED Monitor is no exception to this tendency. While certainly not the finest 4K PC display on the market and perhaps not up to the standards of certain fully professional displays, the 27MU67-B nonetheless delivers some truly outstanding features that make it into a 4K display almost worthy of being classified as a pro model.

An IPS display, excellent color gamut coverage and some interesting workspace enhancement technologies are also promised in the 27MU67-B and combine together to deliver a monitor that looks like an all-around solid, if not excellent piece of 4K PC display technology for both casual use and professional work needs.

Furthermore, while not having the much faster response times of a TN display, the IPS panel design of the 27MU67-B 27" does include both excellent display color and AMD FreeSync technology for a more robust 4K PC gaming experience similar to the Samsung U28E590D.

LG doesn’t always get its display technology just right and some of their older 4K TVs (pre-OLED) are downright disappointing to behold but this isn’t the case with the 27MU67 27". Here, the company offers one very interesting gaming and graphics work tool.

The Good

The LG 27MU67-B 27" comes loaded with goodies that promise some superb visuals and gaming quality specifically. This is a monitor that has been built with a semi-professional grade of display specs that make it rather useful for graphic design work and PC gaming at 4K resolution as well.

To start with, there is the combination of IPS display technology and an sRGB coverage of more than 99%. This means a maximum of picture clarity with color accuracy and color at minimal levels. The extremely high sRGB and CMYK color gamut range coverage in the 27MU67-B 27" ensures some very high realism and vibrancy to the colors on the screen, while the IPS panel means that contrast, vibrancy and clarity stay high even at off-center viewing angles. For this reason, the 27MU67-B 27" is a particularly useful model for designers who want to edit photos and graphics without spending more than $1000 on professional-grade 4K monitors.

Next, there is AMD’s FreeSync technology, which has been built into the 27MU67-B’s DisplayPort 1.2 settings. AMD FreeSync --designed to work with higher-end AMD gaming GPUs and particularly the company’s 4K-ready gaming GPUs—is designed to minimize tearing and stuttering on the screen by synchronizing display frame rates with those of your PC’s graphics card. The result is fluid movement even at heavy gaming resolutions and settings. FreeSync in the 27MU67-B puts this specific model a high cut above most 4K PC displays as a choice for 4K and even HD gamers.

To top things off even further with the gaming chops of the 27MU67-B, there is also a built-in Game Mode that LG has included with the monitor. Three programmed gamer modes exist in the 27MU67-B. Two of them are first-person shooter modes and a third is an RTS pre-set option for choosing something a bit more flexible. Some gamers not like any of the three modes but they do offer some cool optimized features and their inclusion shows that LG is definitely aiming at the gaming market as well with this particular monitor.

Finally, there are four screen split and Dual Link Up features built into the 27MU67-B with an eye to creating an optimal digital workspace experience. The four screen split is a big booster on productivity and by now a rather common feature in 4K monitors. It can be activated from a drop-down menu list by simply re-sizing your screen to any one of 8 pre-configured screen splits that break down into anywhere from 2 to four windows for whatever scenario and work arrangement you need. As for the Dual Link Up, it allows you to connect two different compatible devices like phones, cameras, Blu—ray players and other computers to the same monitor and use both in their own separate screen at the same time. However, the Dual Link Up must be used with one DisplayPort connection while the other device connects via HDMI.


Check the Price of the LG Electronics 27MU67 27" Screen LED-Lit Monitor 27MU67-B on Amazon:

4.6 9 Reviews

The Bad

The 27MU67 from LG is of course also far from perfect and a few notable deficiencies are worth mentioning, though none of them are serious enough to warrant ignoring this monitor.

First of all, there are no USB ports on the 27MU67. This is a bizarre and gross oversight on the part of LG and while yes you do get dual HDMI, Display Port 1.2 and mini Display Port 1.2 ports, USB is a crucial extra that a lot of users wouldn’t want to go without.

Secondly, the IPS panel, while excellent for visual quality does also mean a slightly slower response time when it comes to PC gaming controls. Furthermore, it adds to the price of this monitor just enough to make it slightly more expensive than other models with the same specs that we’ve seen on the market.

Finally, the 300cd /m2 brightness level of the screen isn’t actually quite that high in practice, registering somewhat less at 290 cd/m2 or below in some cases. While this will be fine for most users, there are cheaper 4K PC monitors that come with superior 320 or 350 cd/m2 brightness ratings.

Final Thoughts

The LG 27MU67-B 27" Class 4K IPS Monitor is a solid piece of 4K PC display technology but its only excellent feature is its display color quality. Connectivity is below average and the physical design lacks adjustability options. That said, we do recommend it for PC gamers since it comes with AMD FreeSync and this is still a less than common spec in many 4K monitors.

Specs

Weight: 21.4 lbs with stand, 17 lbs without stand
Dimensions: (WxHxD): 25.3" x 9.8" x 17.3" inches with stand/ 25.3" x 2.2" x 15" without stand
Screen size: 27 inches, measured diagonally
Screen type: IPS with FreeSync
Contrast ratio: 1000:1
Aspect Ratio: 16:9
Colors: 1.07 billion (10-bit)
Brightness: 300 cd/m2
Refresh Rate: 60Hz
Screen Lighting: LED
Response time: 5 ms grey-to-grey
Resolution: 3840 x 2160
OS Compatibility: Windows
Connectivity Ports: 2 x HDMI 2.0, 1 x DisplayPort 1.2, 1 x Mini DisplayPort 1.2, Headphone out

Highlights

The main highlights of the LG 27MU67-B revolve around its FreeSync technology and array of work-enhancement additions.

The FreeSync technology was a real bonus in the 27MU67-B. This feature is designed to work with AMD’s higher-end and 4K-capable gaming GPUs and if our PC happens to have one of these, then this is a monitor that’s definitely worth considering. FreeSync synchronizes the frame refresh rate of the 27MU67-B with that of your PC’s GPU to create a much smoother gameplay and video viewing experience which is free of tear, juddering and stutter. This is particularly useful technology for anyone who wants to use the 27MU67-B for gaming at 4K resolutions. It might cause your monitor to show a slower frame rate as it adjusts itself to the refresh rate of your GPU but your general gameplay experience will definitely flow more smoothly.

FreeSync only works with AMD GPUs and must be used through the 27MU67-B DisplayPort 1.2 connections, so bear this in mind since the monitor comes with only one DP 1.2 and one Mini DP 1.2 port.

Moving along, we have to say that the work- enhancement technologies in the 27MU67-B are very useful for professional tasks that require a bit more efficiency and flexibility. The four screen split technology offers enough different screen splitting options for anywhere from 2 to four screens that it is genuinely interesting to work with, particularly for projects that require comparative tasks. Likewise applies for the Dual Link Up feature. By letting you connect two different PCs or other devices to the same 27MU67-B monitor, Dual Link Up can be a useful tool for working on projects from two different PCs at the same time –or from a PC and a tablet or smartphone or even an external media player.

Finally, the physical design of the LG 27MU67-B is worth mentioning. This is a good looking piece of technology with a robust black body and a sturdy design. However, while pivot and height adjustability is there, the display can’t be rotated or tilted and this is a bit disappointing.


Check the Price of the LG Electronics 27MU67 27" Screen LED-Lit Monitor 27MU67-B on Amazon:

4.6 9 Reviews

Visual Specs

Thus, LG’s excellent reputation for high performance and clarity at 4K and high definition in general is further reinforced with the 27MU67-B thanks to a powerful, vibrant and highly realistic color spectrum on the screen. The 99.5% sRGB coverage is further combined with a high level of CMYK color range coverage to offer 10 bit color that shows 1.07 billion different colors for maximum accuracy. No, you’re not getting the same absolutely superb professional color coverage you might find in select pro 4K monitors for visual editors, and the 27MU67-B doesn’t come with a certified AdobeRGB coverage, which is a telling sign that this isn’t a true professional 4K display. However, what you do get in terms of color accuracy and range is more than great for the price at which this display is selling.

The IPS panel technology only improves things further by introducing maximum brightness, clear and wide 178 degree clear off-center viewing angles.

Finally, LG has included a “Black Stabilizer” feature that actually works to increase brightness during gameplay in darker scenes. This can be deactivated but it’s rather amusing to see it included when one considers that most display devices today want to promote exactly the opposite: how deeply dark they can make their on-screen dark spaces. Black Stabilizer aside, the contrast level of the 27MU67-B is decent. It’s not superb or as good as some PC monitor contrast levels we’ve seen but it’s also not so bad that it might cause serious annoyance.

Connectivity

The connectivity of the LG 27MU67-B can best be described as just below average and is in fact one of this monitor’s weakest aspects. You do get most of the modern basics via two HDMI 1.4 ports, a DisplayPort 1.2 port and a Mini DisplayPort 1.2 port but the lack of USB ports of any kind is a major defect of the model and the HDMI could definitely have been of the 2.0 variety for more options for connecting external 4 video sources at 60 frames per second. This is a relatively new 4K monitor after all.

The FreeSync technology of the 27MU67-B can only be used via the monitor’s DisplayPort 1.2 connection.

Pricing

The price of the LG 27MU67-B is sitting at $519.45 on amazon.com. This isn’t a bad price for the display quality of this monitor but neither is it particularly great considering the weak connectivity features. The more professional version is the LG 31MU97-B.

Check the Price of the LG Electronics 27MU67 27" Screen LED-Lit Monitor 27MU67-B on Amazon:

4.6 9 Reviews


Not so Great

To summarize briefly, the LG 27MU67-B suffers worst from a lack of serious connectivity options and the exclusion of HDMI 2.0 and USB ports is a major deficiency here. That aside, the contrast levels on the screen could have been a bit better and LG could also have included better stand adjustability options.

Positives

• Excellent sRGB coverage
• Great color accuracy
• Solid physical design
• FreeSync for 4K and HD gaming
• Decent price

Negatives

• Weak connectivity options
• Modest contrast levels
• Lacks tilt and rotation adjustment in stand

Editor Rating
 
Features
A

 
Quality
A-

 
User Friendliness
A

 
Connectivity
A+

 
Price
B+

Total Score
A-

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User Rating
 
Features
B

 
Quality
B+

 
User Friendliness
B

 
Connectivity
B

 
Price
B

User Score
140 ratings
B

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Bottom Line
 

The LG 27MU67 27" Class 4K UHD IPS LED Monitor is above average in terms of quality for its price range but it also lacks a few key things that would have made it into a much better piece of 4K PC display technology. Nonetheless, we still recommend it for 4K PC gamers due to it's still uncommon FreeSync feature.

Check the Price of the LG Electronics 27MU67 27" Screen LED-Lit Monitor 27MU67-B on Amazon:

4.6 9 Reviews

 
17 comments
 
Leave a reply »

 
  • A grammar nazi
    August 23, 2015 at 7:49 am

    Why did you always write “27MU67-B 27″? That’s redundant, the monitor’s name is just 27MU67-B. The name already contains the fact that it’s 27”.

    Also typo, it’s tearing, not rearing.

    But looks like a really good monitor. I wouldn’t bash it so hard for having no USB.

    Reply

    • Stephen
      Stephen
      August 25, 2015 at 11:48 pm

      Thanks for pointing out the little errors, corrected. Yes, it is a good monitor but USB is a useful feature for a lot of users and most 4K monitors include it so I thought it deserved a bit of criticism for the omission.

      Reply

    • Brett
      November 23, 2015 at 1:32 pm

      I have never used USB ports on the back of a monitor that is what a Hub is for. We are only concerned on finding the right 4k monitors these days since 1080 is DEAD!

      Reply

  • Mark Wilson
    September 7, 2015 at 5:41 am

    Stephen, you listed the contrast as 1,000:1 in your review. Is that a value that you measured?

    LG lists the contrast as 5,000,000:1 in their specifications (http://www.lg.com/us/monitors/lg-27MU67-B-4k-uhd-led-monitor).

    Reply

    • Stephen
      Stephen
      September 8, 2015 at 12:12 pm

      Hello Mark, Dynamic contrast ratio is a very different figure from native contrast ratio. The former is basically a half-arbitrary marketing figure put forth by manufacturers based on rather secretive criteria, the latter is the real contrast between dark and light on a screen. It very rarely goes above 3000:1 and the highest tested TV/monitor native contrast ratio we’ve ever heard of was about 5400:1. The 27MU67’s ratio tested at a little over 1000:1 but this can vary slightly from unit to unit.

      Reply

  • Drep
    September 8, 2015 at 10:23 am

    I grabbed this monitor from bh photo for 549. I love it so far. Are you sure the hdmi’s are only 1.4? The manual doesn’t say either but the manual states 4k [email protected] and also says it’s hdcp2.2 compliant. I tested both the displayport and hdmi at 4k and I’m getting 60hrz. Are they using some type of trick to get 60hrz over a 1.4 connection? You do have to enable a setting for it on the display called hdmi deep color though.

    Reply

    • Kevin
      September 14, 2015 at 1:44 pm

      I’m not sure how you got hdmi to work at 60hz because it’s not working even with deep color on for me. I’m fine with using displayport but I was just curious as to how it could be possible with hdmi.

      Reply

      • Drep
        October 22, 2015 at 11:46 am

        all I did was plug it into my hdmi 2.0 connection on my 980ti video card and tested it. it worked fine at 60hz.

        I just noticed my box doesn’t actually have the -b listing behind the model # though nor does the manual. 60hrz is working though on both my display port and hdmi connections.

        I’m loving this monitor and the price tag was great to go along with it. The buttons on it are very very sensitive…that’s the only beef I can come up with. lol

        Reply

        • Drep
          October 22, 2015 at 11:59 am

          I haven’t tested the freesynch out though yet since I don’t have an amd card. I will though come next quarter when the new ones come out. lol

          Reply

  • Kevin Do-Tran
    September 11, 2015 at 7:15 am

    I’d also like to know the answers to these questions!

    Reply

  • Kevin
    September 14, 2015 at 1:52 pm

    Stephen, you mentioned that the monitor lacks rotational adjustment. Do you mean you can’t rotate it so that it’s standing tall like a skyscraper? Mine has full rotational adjustability, so is it possible that you missed it or we’re looking at different models? Mine is the 27MU67 and I believe it’s the same as the 27MU67-B but with a varied name. LG’s online manual for the B-version has the name 27MU67 stated without the letter B. Nevertheless, I don’t believe they would take away the rotational feature in a newer version.

    Reply

  • Ivan
    September 21, 2015 at 8:45 am

    whats input latency of monitor … you write info about 5 ms gray to gray but thats not really important as input latency

    Reply

  • Steve
    October 7, 2015 at 11:32 am

    Although display quality is exceptional (just as other 27″ 4K IPS displays), the the monitor has some super annoying features and design choices.

    – The display has touch buttons on the bottom of the screen (at an invisible location). Problem is, you have to really concentrate to actually hit them properly. The functions of each buttons are printed on the front of the display with a matte-gray print which cannot be seen at all even in semi darkness.
    – If the OSD is not activated, you have all four (!!!) buttons to control voume (even though the display does not even have any built in speaker just a headphone out jack which is probably left unused in most setups anyway), but you can’t control brighntess and contrast at all. Of course you can’t redefine the function of any of the buttons.
    – If you want to remedy the situation by controlling the brightness through a DDC app, you can’t, because the display’s firmware is totally broken…
    – To access brightness control you have to tap 2 separate buttons three times. To access contrast control you have to touch 3 separate buttons (4 taps needed). Even in a semi dark environment it is next to impossible to do this task. I habitually use my phone’s LED to examine where to touch.
    – Everytime the display goes to sleep, it displays a huge warning message with a full screen white (!!?) background for almost 10 seconds. This might be useful for near-blind people (but they probably don’t buy a high end 4K display), but for others it is pure annoyment.
    – Everytime the display comes back from sleep it displays a huge and really ugly message box overly for several seconds stating some trivialities and a huge green leaf showing “ENERGY SAVING STATUS”. What were LG thinking? Of course there is no way to disable any of this.
    – The OSD is very basic and rather illogical. Lacks any real deeper control, but you can access several useless marketing features.

    Because of these I cannot recommend this display in good conscience.

    Reply

    • Oleg
      January 23, 2016 at 5:21 pm

      Yes, the buttons are total disaster on this monitor. A dpad or joystick would be much better, even on the back of the monitor.

      On my previous monitor, I used buttons to quickly switch display presets and inputs. On this one, you can switch only between sRGB and Game modes. You can’t quickly select Reader mode. The OK button shows the current input port, but doesn’t allow to change it!

      Reply

  • Steve
    October 7, 2015 at 12:09 pm

    A comment to Drep and Kevin: the product specification page in the user manual (page 29-30) cleary states that the monitor can accept 2160p at 60Hz over HDMI.

    Reply

  • Jürgen
    December 26, 2015 at 4:25 am

    Hello,
    Wat types of video cards do you recommend for the monitor?

    Reply

    • Stephen
      Stephen
      December 27, 2015 at 5:26 am

      Hello Jurgen. Given that this is a 4K UHD monitor, we’d strongly recommend some of Nvidia or AMD’s more powerful and newer GPUs to really enjoy the full potential of the 27MU67. If you won’t be doing any 4K gaming, AMD’s 300X GPUs or Nvidia’s 900+ GPUs are probably good enough for most 4K graphics but if you’re serious about trying to play games in 4K resolution at close to 60fps, then go for the best video cards on the market like the Radeon R9 Fury X, the Nvidia GTX 980 Ti and some of the other top listed cards we recommend in our gaming page: http://4k.com/gaming/

      Reply

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