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The 5 Best 4k Monitors - Fall 2018
Reviews

Best 4k Monitors
53 Monitors Tested
  • Store-bought monitors; no cherry-picked units
  • Retest after major updates
  • Easily comparable results
  • No ads; unbiased reviews
Learn more about our approach to product reviews here.

Although 4k TVs are becoming very common, 4k monitors are just starting to become more mainstream. Whether you are looking for a better multitasking experience for work or just want a more immersive gaming experience, 4k monitors have a lot to offer. Although they used to be very expensive, they have recently started to drop in price as 4k becomes more popular and more devices support it. See also our recommendations for the best 1080p and 1440p monitors.

We've reviewed 9 4k monitors, and below are our picks for the top 5 that are available for purchase in 2018.

  1. Best 4k Monitor: LG 27UK650-W

    Usage Ratings - Version 1.0

    Test Benches:

    • 1.0: Fall 2017
    7.9
    Mixed Usage
    Score components:
    Size : 27 "
    Resolution : 3840x2160
    Refresh Rate : 60 Hz
    LCD Type
    What it is: Type of LCD technology used by the monitor.
    When it matters: Different technologies have different viewing angle properties.
    :
    IPS
    Variable Refresh Rate
    What it is: Feature that allows the monitor to synchronize its refresh rate with the input device's output and reduces stuttering and screen tearing.
    When it matters: Almost every usage, but is most noticeable in gaming where constant fluctuation in framerate cause distracting artifacts.
    :
    FreeSync

    The LG 27UK650 is the best 4k monitor that we've tested so far. It is a very good IPS monitor with excellent low input lag, wide viewing angles, and good picture quality. The 27", 4k screen is great for office work, as it is much easier to multitask. LG includes software that makes it a breeze to multitask, as you can split the monitor into multiple virtual displays.

    The 4k screen on the UK650 is great for gaming, although some gamers may find the 60 Hz refresh rate too limiting. It also supports FreeSync, which is great, making it a great choice for Xbox One S/X gamers that prefer gaming on a smaller screen.

    Unfortunately, although the 27UK650 supports HDR, there is little benefit to using it as it isn't very bright in HDR and lacks a wide color gamut. Overall, it is a decent monitor that should please most people regardless of intended usage.

    See our review

  2. Larger Alternative: LG 32UD99-W

    Size : 32 "
    Resolution : 3840x2160
    Refresh Rate : 60 Hz
    LCD Type
    What it is: Type of LCD technology used by the monitor.
    When it matters: Different technologies have different viewing angle properties.
    :
    IPS
    Variable Refresh Rate
    What it is: Feature that allows the monitor to synchronize its refresh rate with the input device's output and reduces stuttering and screen tearing.
    When it matters: Almost every usage, but is most noticeable in gaming where constant fluctuation in framerate cause distracting artifacts.
    :
    FreeSync

    If you like the LG 27UK650 but would prefer a larger screen, take a look at the LG 32UD99. There is very little difference in performance between the two monitors, but the 32" screen on the 32UD99 provides nearly 40% more screen real estate. It also has a built-in USB 3.0 hub, great if you will be using it with a laptop as you can keep your keyboard and mouse connected to the screen.

    See our review

  3. Cheaper Alternative: LG 27UD58-B

    Size : 27 "
    Resolution : 3840x2160
    Refresh Rate : 60 Hz
    LCD Type
    What it is: Type of LCD technology used by the monitor.
    When it matters: Different technologies have different viewing angle properties.
    :
    IPS
    Variable Refresh Rate
    What it is: Feature that allows the monitor to synchronize its refresh rate with the input device's output and reduces stuttering and screen tearing.
    When it matters: Almost every usage, but is most noticeable in gaming where constant fluctuation in framerate cause distracting artifacts.
    :
    FreeSync

    If you want to save a bit of money, the LG 27UD58-B is a cheaper alternative to the LG 27UK650. The 27UD58-B is a decent 4k monitor. Compared with the 27UK650, it has a fixed stand that isn't as easy to place in an ideal viewing position, and it doesn't support HDR. It isn't as bright, but there shouldn't be any issues with it, unless your room has a lot of natural lighting. Like the 27UK650, the 27UD58 has a standard 60 Hz refresh rate, and it supports FreeSync, great for gaming.

    See our review

  4. Best 4k Monitor for HDR: Acer Predator X27

    Usage Ratings - Version 1.0

    Test Benches:

    • 1.0: Fall 2017
    8.0
    Mixed Usage
    Score components:
    Size : 27 "
    Resolution : 3840x2160
    Refresh Rate : 120 Hz
    LCD Type
    What it is: Type of LCD technology used by the monitor.
    When it matters: Different technologies have different viewing angle properties.
    :
    IPS
    Variable Refresh Rate
    What it is: Feature that allows the monitor to synchronize its refresh rate with the input device's output and reduces stuttering and screen tearing.
    When it matters: Almost every usage, but is most noticeable in gaming where constant fluctuation in framerate cause distracting artifacts.
    :
    G-Sync

    If you want the best HDR experience, or often work in the wider Adobe RGB color space, the Acer Predator X27 has the widest color gamut of any 4k monitor that we've reviewed so far. It's also extremely bright and has excellent motion handling, making it one of the most versatile monitors that we've reviewed so far.

    The X27 has an excellent wide color gamut, better even than most TVs, and it covers nearly 100% of the Adobe RGB color space, great for professionals that work in the print or marketing industries. It has excellent wide viewing angles and great HDR support. The monitor also supports G-Sync, but like all current 4k monitors, it is limited to a 60 Hz refresh rate.

    Unfortunately, the Acer Predator X27 doesn't look the best in a dark room. It has a disappointing native contrast ratio, so blacks appear gray in a dark room. It does have a local dimming feature, but it isn't very effective. Overall, although the X27 is very expensive, it is a great monitor that should please most people.

    See our review

  5. Best 4k Monitor for a Dark Room: LG 32UD59-B

    Usage Ratings - Version 1.0

    Test Benches:

    • 1.0: Fall 2017
    7.4
    Mixed Usage
    Score components:
    Size : 32 "
    Resolution : 3840x2160
    Refresh Rate : 60 Hz
    LCD Type
    What it is: Type of LCD technology used by the monitor.
    When it matters: Different technologies have different viewing angle properties.
    :
    VA
    Variable Refresh Rate
    What it is: Feature that allows the monitor to synchronize its refresh rate with the input device's output and reduces stuttering and screen tearing.
    When it matters: Almost every usage, but is most noticeable in gaming where constant fluctuation in framerate cause distracting artifacts.
    :
    FreeSync

    If you often work in a dark room, the LG 32UD59-B is the best 4k monitor for a dark room that we've reviewed so far. It is a decent 4k VA monitor with good gaming performance thanks to the low input lag and FreeSync support.

    The 32UD59-B delivers decent picture quality, but is best suited for a dark room. It has a very good native contrast ratio, so blacks appear black in a dark room, but it isn't very bright and might not be able to overcome glare in a bright office.

    Unfortunately, it doesn't support HDR, and due to the VA panel, it doesn't have very wide viewing angles and is best enjoyed from the front. Overall, it is a decent 4k monitor that should please most people.

    See our review

Notable Mentions

  • Dell U2718Q. Very good 4k monitor, but the LG 27UK650 is better overall. See our review
  • LG 27UD68P-B. Good 4k monitor, but the LG 27UK650 is better overall and supports HDR. See our review
  • LG 43UD79. Decent large 4k monitor, but the LG 32UD99 is much better overall. See our review

All Reviews

Our recommendations are based on what we think are the best 4k monitors currently available. They are adapted to be valid for most people, in each price range. Rating is based on our review, factoring in price and feedback from our visitors. 

If you would prefer to make your own decision, here is the list of all of our monitor reviews. Be careful not to get too caught up in the details. Most monitors are good enough to please most people, and the things we fault monitors on are often not noticeable unless you really look for them.

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