Samsung C34F791/CF791  Monitor Review

Reviewed Jul 27, 2018 at 09:13am
Retest Jan 17, 2019 at 09:25am
Tested using Methodology v1.0 
Samsung C34F791/CF791

Track

0.0
Mixed Usage 
0.0
Office 
0.0
Gaming 
0.0
Multimedia 
0.0
Media Creation 
0.0
HDR Gaming 

Track

 0

The Samsung CF791 is a decent ultrawide monitor. It has a VA panel that can produce deep dark scenes which is good for those in a dark room. It also has great gray uniformity, which is good for watching videos or browsing the web. Unfortunately, the image degrades when viewed at an angle, but the curvature of the display helps to mitigate this. The C34F791 also has great motion handling with a fast 100Hz refresh rate.

Our Verdict

0.0
Mixed Usage 

This is a decent monitor for mixed usage. It has a mediocre picture quality that can display nice dark scenes but the image degrades at an angle. It has great motion handling and excellent color accuracy for professionals.

Pros
  • Can produce deep dark scenes.
  • Colors appear uniform.
  • Great motion handling.
Cons
  • Image degrades when viewed at an angle.
  • Higher input lag than other monitors.
0.0
Office 

This is a decent monitor for office use. Its large screen and excellent resolution give you enough room and detail to work. Unfortunately, the image degrades at an angle and the poor ergonomics won't allow you to easily work side-by-side with a colleague.

0.0
Gaming 

The Samsung C34F791 is a good monitor for gaming. It has an ok input lag, fast response time for a smooth image, and the FreeSync implementation of the variable refresh rate technology to prevent tearing. The large size and the excellent resolution of the monitor, give you more screen area and more detail to immerse yourself in your favorite game.

0.0
Multimedia 

This is an ordinary monitor for multimedia usage. Its large size and excellent resolution, along with its good reflection handling are its main advantages. On the other hand, the poor viewing angles and the bad ergonomics make it difficult to position it in a comfortable position to enjoy the best picture quality.

0.0
Media Creation 

The Samsung C34F791 is a decent monitor for media creation. Due to its size and resolution professionals will find it very comfortable for working. However, the coverage of the Adobe RGB color space might not be enough for those who will be using it for publishing or printing applications.

0.0
HDR Gaming 

Unfortunately, the Samsung CF791 doesn't support HDR like the Samsung CHG70.

  • 0.0
    Mixed Usage
  • 0.0
    Office
  • 0.0
    Gaming
  • 0.0
    Multimedia
  • 0.0
    Media Creation
  • 0.0
    HDR Gaming
  • Changelog

    1.  Updated Jan 17, 2019: We tested the monitor's compatibility with NVIDIA's new FreeSync driver. See our full investigation into NVIDIA's FreeSync Drivers here.
    2.  Updated Jan 07, 2019: The gradient score has been updated, as it was scored incorrectly at the time of the review.
    3.  Updated Nov 06, 2018: There was an error with the curve radius scoring which has been fixed. This has not changed the usage scores for this monitor.
    4.  Updated Jul 27, 2018: Review published.

    Check Price

    34"C34F791
    B&H
    34"C34F791
    BestBuy.com
    34"C34F791
    Samsung.com

    Differences Between Sizes And Variants

    The CF791 we bought is the 34" model (Samsung LC34F791WQNXZA).

    Model Alternative Name Size Refresh rate Resolution
    CF791 C34F791 34" 100Hz 3440x1440

    If someone's CF791 doesn't correspond to our review, let us know and we will update the review. Note that some tests such as the gray uniformity may vary between individual units.

    Popular Monitor Comparisons

    Comparison picture

    Left: LG 34UC79G-B. Middle: Samsung CF791. Right: Asus PG348Q.

    The Samsung CF791 is a decent, large screen ultrawide monitor. See our recommendations for the best curved gaming monitors, the best gaming monitors for Xbox One X, and the best ultrawide gaming monitors.

    Dell U3417W

    Track

    If you've got a large room with wide seating, then the Dell U3417W is a better choice, but if you're interested in gaming in a dark room while sitting directly in front, then the Samsung C34F791/CF791 is better. The Dell U3417W has an IPS panel, giving you better viewing angles, whereas the CF791 has a slightly better refresh rate and a slightly faster response time resulting in clearer motion.

    Acer Predator XB271HU Bmiprz

    Track

    If you want to work on the same monitor side-by-side with your colleagues at the office, then the Acer Predator XB271HU Bmiprz is a better choice than the Samsung C34F791/CF791 as it has better viewing angles. The Acer is also better for gaming as it has better input lag, better image flicker to clear blur, and you can easily position it to match your liking. On the other hand, the Samsung CF791 is a larger monitor with higher resolution, giving you more area and more detail to work with.

    Samsung CHG70

    Track

    The Samsung CHG70 is much better than the Samsung C34F791/CF791. The CHG70 has much lower input lag, supports HDR, and is equipped with local dimming to make blacks even deeper. You can position it according to your liking and you'll enjoy it in every use. The CF791, on the other hand, is larger, giving you more screen area and more resolution to work with.

    LG 34UC79G-B

    Track

    The LG 34UC79G-B is a better monitor than the Samsung C34F791/CF791 for almost every use, unless you'll be using it in a dark room. The Samsung CF791 has better resolution giving you more details on the screen, but the LG34UC79G has better viewing angles, and you'll enjoy gaming more as it has significantly better input lag and marginally better image flicker to clear blur.

    Show more 
    How We Test Monitors
    How We Test Monitors

    We buy and test more than 30 monitors each year, all of which we purchase ourselves, without cherry-picked units or samples. We put a lot into each unbiased, straight-to-the-point review, and there's a whole process from purchasing to publishing, involving multiple teams and people. We do more than just use the monitor for a week; we use specialized, custom tools to measure various aspects and deliver objective, data-driven results. We also consider multiple factors before making any recommendations, including the monitor's cost, its performance compared to the competition, and whether it's easy to find.

    Test Results

    perceptual testing image
    Sort:
    RATINGS
    Category:
    All
    Design
    Style
    SizeLocked34"
    CurvedLockedLocked
    Curve radiusLockedLocked
    Weight (without stand)
    LockedLock lbs (Lock kg)
    Weight (with stand)
    LockedLock lbs (Lock kg)

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    Stand
    Width
    LockedLock" (Lock cm)
    Depth
    LockedLock" (Lock cm)

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    0.0
    Ergonomics
    Height Adjustment
    LockedLock" (Lock cm)
    Switch portrait/landscapeLockedLocked
    Swivel RangeLockedN/A
    Tilt RangeLockedLocked

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    Back
    Wall MountLockedLocked

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    Borders
    Borders
    LockedLock" (Lock cm)

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    Thickness
    Thickness (with stand)
    LockedLock" (Lock cm)
    Thickness (without stand)
    LockedLock" (Lock cm)

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    0.0
    Build Quality

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    Picture Quality
    0.0
    Contrast
    LCD Type
    LockedVA
    Native Contrast
    LockedLock : 1
    Contrast with local dimming
    LockedN/A

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    0.0
    Local Dimming
    SAMPLE
    JOIN NOW

    for videos & test results

    Samsung C34F791/CF791 Local Dimming Video Sample
    Local Dimming
    LockedLocked
    Backlight
    LockedLocked

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    0.0
    SDR Peak Brightness
    SDR Real Scene
    LockedLock cd/m²
    SDR Peak 2% Window
    LockedLock cd/m²
    SDR Peak 10% Window
    LockedLock cd/m²
    SDR Peak 25% Window
    LockedLock cd/m²
    SDR Peak 50% Window
    LockedLock cd/m²
    SDR Peak 100% Window
    LockedLock cd/m²
    SDR Sustained 2% Window
    LockedLock cd/m²
    SDR Sustained 10% Window
    LockedLock cd/m²
    SDR Sustained 25% Window
    LockedLock cd/m²
    SDR Sustained 50% Window
    LockedLock cd/m²
    SDR Sustained 100% Window
    LockedLock cd/m²
    SDR ABL
    LockedLock

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    0.0
    HDR Peak Brightness
    HDR Real Scene
    LockedN/A
    HDR Peak 2% Window
    LockedN/A
    HDR Peak 10% Window
    LockedN/A
    HDR Peak 25% Window
    LockedN/A
    HDR Peak 50% Window
    LockedN/A
    HDR Peak 100% Window
    LockedN/A
    HDR Sustained 2% Window
    LockedN/A
    HDR Sustained 10% Window
    LockedN/A
    HDR Sustained 25% Window
    LockedN/A
    HDR Sustained 50% Window
    LockedN/A
    HDR Sustained 100% Window
    LockedN/A
    HDR ABL
    LockedN/A

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    0.0
    Horizontal Viewing Angle
    SAMPLE
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    Samsung C34F791/CF791 Horizontal Viewing Angle Video Sample
    Color Shift from Left
    LockedLock°
    Color Shift from Right
    LockedLock°
    Brightness from Left
    LockedLock°
    Brightness from Right
    LockedLock°
    Black Level from Left
    LockedLock°
    Black Level from Right
    LockedLock°
    Curve RadiusLockedLockR

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    0.0
    Vertical Viewing Angle
    SAMPLE
    JOIN NOW

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    Samsung C34F791/CF791 Vertical Viewing Angle Video Sample
    Color Shift from Below
    LockedLock°
    Color Shift from Above
    LockedLock°
    Brightness from Below
    LockedLock°
    Brightness from Above
    LockedLock°
    Black Level from Below
    LockedLock°
    Black Level from Above
    LockedLock°

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    0.0
    Gray Uniformity
    50% Std. Dev.
    LockedLock%
    50% DSE
    LockedLock%
    5% Std. Dev.
    LockedLock%
    5% DSE
    LockedLock%

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    0.0
    Black Uniformity
    Native Std. Dev.
    LockedLock%
    Std. Dev. w/ L.D.
    LockedN/A

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    0.0
    Pre Calibration
    Picture Mode
    LockedLocked
    Luminance
    LockedLock cd/m²
    Luminance Settings
    LockedLock
    Contrast Setting
    LockedLock
    RGB controls
    LockedLocked
    Color Temperature
    LockedLock K
    White Balance dE
    LockedLock
    Color dE
    LockedLock
    Gamma
    LockedLock

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    0.0
    Post Calibration
    Picture Mode
    LockedLocked
    Luminance
    LockedLock cd/m²
    Luminance Settings
    LockedLock
    Contrast Setting
    LockedLock
    RGB Controls
    LockedLocked
    Color Temperature
    LockedLock K
    White Balance dE
    LockedLock
    Color dE
    LockedLock
    Gamma
    LockedLock

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    0.0
    SDR Color Gamut
    sRGB xy
    LockedLock%
    Adobe RGB xy
    LockedLock%

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    0.0
    SDR Color Volume
    sRGB in ICtCp
    LockedLock%
    Adobe RGB in ICtCp
    LockedLock%

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    0.0
    HDR Color Gamut
    Wide Color Gamut
    LockedLocked
    DCI P3 xy
    LockedN/A
    Rec. 2020 xy
    LockedN/A

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    0.0
    HDR Color Volume
    DCI-P3 in ICtCp
    LockedN/A
    Rec. 2020 in ICtCp
    LockedN/A

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    0.0
    Image Retention
    IR after 0 min recovery
    LockedLock%
    IR after 2 min recovery
    LockedLock%
    IR after 4 min recovery
    LockedLock%
    IR after 6 min recovery
    LockedLock%
    IR after 8 min recovery
    LockedLock%
    IR after 10 min recovery
    LockedLock%

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    0.0
    Gradient
    Color Depth
    LockedLock Bit

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    0.0
    Color Bleed
    Pixel row error
    LockedLock%
    Pixel column error
    LockedLock%

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    0.0
    Reflections

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    Motion
    0.0
    Motion Blur
    80% Response Time
    LockedLock ms
    100% Response Time
    LockedLock ms
    Best Overdrive Setting
    LockedLocked

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    0.0
    Image Flicker
    Flicker-freeLockedLocked
    PWM Dimming Frequency
    LockedLocked
    Black Frame Insertion (BFI)
    LockedLocked
    BFI Maximum Frequency
    LockedN/A
    BFI Minimum Frequency
    LockedN/A

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    0.0
    Refresh Rate
    Variable Refresh Rate
    LockedFreeSync
    Native Refresh Rate
    Locked100 Hz
    Factory Overclock
    LockedN/A
    Variable Refresh Rate
    LockedLocked
    G-SYNC Compatible
    LockedLocked
    VRR Maximum
    LockedLock Hz
    VRR Minimum
    LockedLocked
    VRR Maximum With OC
    LockedN/A
    VRR Supported ConnectorsLockedLocked

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    Inputs
    0.0
    Input Lag
    Native Resolution
    LockedLock ms
    Non-Native Res @ Native Refresh
    LockedN/A
    Native Resolution @ 60 Hz
    LockedLock ms
    Variable Refresh Rate
    LockedLock ms
    10 bit HDR
    LockedN/A
    Black Frame Insertion (BFI)
    LockedN/A

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    0.0
    Resolution and Size
    Native ResolutionLocked3440 x 1440
    Aspect RatioLockedLocked
    MegapixelsLockedLock MP
    Pixel DensityLockedLock PPI
    Screen DiagonalLockedLock"
    Screen AreaLockedLock in²

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    Inputs

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    Total Inputs
    DisplayPortLockedLocked
    Mini DisplayPortLockedLocked
    HDMILockedLocked
    DVILockedLocked
    VGALockedLocked
    DisplayPort OutLockedLocked
    USBLockedLocked
    USB CLockedLocked
    Analog Audio Out 3.5mmLockedLocked
    Microphone In 3.5mmLockedLocked
    Digital Optical Audio OutLockedLocked
    Analog Audio Out RCALockedLocked
    Power SupplyLockedLocked

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    Features
    Additional Features
    Speakers
    LockedLocked
    HDR10LockedLocked
    Multiple input display
    LockedLocked

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    On-Screen Display (OSD)

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    Controls

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    In The Box

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