With a 1500R curvature, the C34J791 34″ 21:9 Curved FreeSync VA Monitor from Samsung offers a viewing experience that envelops the viewer in their multimedia content. Flicker-free technology, AMD FreeSync support, Game Mode, and Eye Saver Mode all help to provide a healthy and enjoyable time whether you’re writing up a report, playing games, or simply kicking back and watching a movie.
This Samsung monitor features a 3440 x 1440 resolution, a 3,000:1 contrast ratio, a 300 cd/m² brightness rating, a 100 Hz refresh rate, a 4 ms response time, and support for up to 16.7 million colors all designed to provide a crisp, clear picture with reduced ghosting and blur. Additionally, the C34J791 display offers 178° horizontal and vertical viewing angles along with the ability to tilt the display or mount it to the wall for more comfortable viewing. Setup is simple as this monitor comes equipped with DisplayPort, HDMI, and Thunderbolt 3 inputs as well as a built-in USB 3.0 hub to connect USB compatible peripherals directly to the display. For mounting this monitor to a wall, there is a 100 x 100mm VESA mount.
Fannie VonRueden (verified owner) –
I’m the creative type, and my various lines of work present somewhat of a challenge when choosing a computer monitor that suits the types of work I do. 30 years as a software developer, graphics designer, a professional photographer and web developer I find myself having to always reorganise my desktop workspace or move between various devices. I do most of my work using Mac, then Windows 10 and from time to time I have to tinker around with Linux. Using the Samsung CJ791 monitor I can now enjoy the pleasure of never having to move to another machine and various applications organised with ease on my workspace accessible at a glance. I have the CJ791 configured as my main monitor with my 21.5-inch iMac utilised as an extended portion to the right of the main monitor and connected using the DisplayPort “Thunderbolt 2” as my current iMac is not USB-C “Thunderbolt 3”. I also have my Windows 10 PC connected to the monitor using the supplied HDMI cable. Both cables fit easily into the CJ791 cable tidy system along the stem of the monitor stand, a very nice feature that is not apparent without reading the manual. The specs of this monitor are very impressive, with an ultra-wide aspect ratio of 21:9 and a generous 34″ of screen real estate that is all encompassing. I actually find I have to slightly move my head to look from one end of the screen to the other as moving only the eyes can be a little strenuous. Out of the box the monitor is well calibrated however you will need to create a professional colour profile using a profiling device if you want realistic colours. This however is not fault of this monitor as any photographer or graphics designer will have to perform this task on any monitor. After profiling the colours and Gamma are greatly improved. Gamma is reduced and colours become deeper. I used the ColorMunki Photo and created two profiles, one for the Windows 10 machine and one for the iMac. If you are doing PIP/PBP this is very important. The only issue I have with the monitor, “if I can even call it an issue” is a very faint dulling around the edges of the screen, there seems to be two slim bands approx. 1/2 an inch in width and approx. a stop of light less than the display, down both sides of the screen. This is barely noticeable and has no impact on the use of the display at all, you basically have to have a good look to even notice this. As a software developer I’m always having to use multiple applications, terminals, IDE’s, API reference materials etc. With the ultra-wide 21:9 screen I easily fit all my applications and terminals on the main display with room to spare. I even utilise the iMac extended screen as the main screen for my Linux distro running in VirtualBox. I choose not to use PIP/PBP for Windows and Mac, rather I preferer to utilise the full desktop for the one OS and switch between the two using the menu source selection when required. This is simple as you can have up to three input signals, DisplayPort, HDMI and USB-C and they can be all connected at the same time. Now that I’ve had time to experience the wonder of this ultra-wide 21:9 display, I have no idea how I could ever go back to using a regular 16:9 widescreen display. Even my 27″ iMac seems too little. It’s simply a wonderful experience. It makes your workflow a lot smoother and that alone is a winner for me! This is a very impressive monitor, I’d recommend to almost anybody, especially for media production such as video and graphics editing.
Vernon Klocko (verified owner) –
I used this monitor for work and school. It truly gives you a great 2 screen in one feel. The connections are great. You dont need a seperate hub to connect the screen, everything is there. I want to try a dual screen with this product and see the true power of it.
Favian Kutch (verified owner) –
I mainly use this monitor for gaming. The curves screen has an immersive feel to it. It has a wonderful picture quality. All in all I couldn’t have asked for a better monitor. Thanks you to the designer of this monitor for the very best.
Icie Luettgen (verified owner) –
Nice monitor to use for work . Recommend for office use.
Fatima Beier (verified owner) –
I use this monitor for both work and personal. I love the extreme visuals on it as well. I never thought there would be a monitor with realistic graphics And home theater built in… absolutely love how fast I can CONNECT with ANY ELECTRONICS
Anais Larkin (verified owner) –
Decent picture, better than the crystal tvs for sure
Flossie Jaskolski (verified owner) –
Purchased the C34J791 to condense my two work and gaming/programming desks into one. I grew tired of maintaining and giving up room to both desks once their purposes blurred. Needing to consolidate a MacBook Pro, a Win gaming PC, and a work Win laptop into a single space proved to be a bit challenging in monitor selection when shopping for an 85w Thunderbolt port that will also charge the MBP. I had been researching the C34J791 and decided to give it a shot along with the Logi Craft Keyboard and MX Master 2S mouse which allow for 3 BlueTooth pairings switchable via buttons 1-3 on each. I have yet to integrate my work laptop into the mix via DisplayPort (wont shut it down until the weekend) but using my gaming rig via HDMI and the MBP with TB3, the switching is reasonably fast. The PBP/PIP feature also works very well but I do confess I have some settings to deal with on the Win side as its half of the PBP is trying to run ultra-wide making the overall screen too small for practical use. Unboxing this monitor was a new experience in that it came with the stand attached (hence the VERY large packaging) and ready to hook up. The ports are visibly labeled indicating the 15w USB-C and the all-important 85w port which will both carry video/audio and charge your MB/laptop. I spent more time removing plastic film than I did hooking up my MBP and desktop. The single joystick-type control that allows you to change settings, input, etc… was surprisingly intuitive enough to allow for instantly understanding how to navigate without having to consult a manual (available via download only). I did not expect anything but sub par integrated speakers yet these are above average. They arent what Ill use long term as I have the Logitech MX 2.0 speakers ordered to complete the overall package, but the integrated speakers are definitely passable for people that dont game or listen to a lot of music while working. Im still working on the color calibration so the jury is still out on that. I gave up some screen real estate by replacing 2 x 27 monitors but the connectivity options and removing a monitor bezel in the middle has already made this purchase worth it. The monitor has height adjustment and tilt but no swivel which im not missing as my 27s did not have swivel either. So far my only long-term concern is with the joystick control as it doesnt feel quite as sturdy as the rest of the monitor. With the amount of switching I can potentially do each day among 3 computers, this could be the weak point in my ecosystem. However this would likely be a concern with other monitors if they had this level of connectivity and were in the running for purchase. Time will tell, but so far loving the monitor overall and how it allows me to declutter my home office. One final note on the nerve wracking initial power up and assessment of the screen – glad to type no dead pixels.
Albin Sanford (verified owner) –
The most noticeable feature is the 1500R screen curvature. When looking at the monitor center on, the bottom edges have a warped effect to it which I am still getting used to. Colour reproduction out of the box was nice. I had high expectations due to the QLED and Quantum dot technology, but coming off an IPS display the colours seem a bit flat. Luckily backlight bleeding wasn’t an issue for me. Annoyingly there are no manuals and the website links to an incorrect one. However, the options are mostly self explanatory and after tweaking with a few modes I found myself keeping to the factory defaults. For productivity the sheer amount of screen real estate make using it an absolute pleasure. My typical tasks included web browsing, word processing and software development. Having split screens is pretty much the norm now which is nice as I felt my previous 27in,16:9 monitor was always too narrow for this. The convenience of the Thunderbolt is a major selling point. I have a thunderbolt laptop which I take to and from work everyday. This monitor would be the perfect companion in this scenario as it saves the hassle of an expensive thunderbolt dock. I spent a number of hours gaming and this is where the CJ791 really excelled. The extra field of vision and the curvature of the screen really improved the level of immersion, especially in games that offered a first person perspective such as driving games and FPSs. Although this is not meant to be a gaming monitor, I found the colour and refresh rate perfectly fine for my gaming experience. I did not notice any ghosting or input lag. The native 3440 X 1440 resolution was perfect for my GTX 1080 graphics card. It handled most games at 60FPS well, allowing me to see plenty of details, however you can tell this was starting to strain my graphics card and I had to turn the graphics just a notch down on some triple A titles. Needless to say, since I did not have an AMD card, I could not test out freesync which is a real shame. The speakers are loud. The mid range is not bad but lacks bass and high end clarity. I think it is typical of monitor speakers which is why I prefer to use dedicated speakers. Overall I love gaming on it and it would be really hard to revert back to a 16:9 screen. In my view the Samsung CJ791 is mainly a productivity monitor designed to accompany a thunderbolt laptop. If thunderbolt is not a requirement then I would recommend the CF model which is pretty much the same but cheaper.
Geovany Larkin (verified owner) –
It’s truly magnificent with how good it really is with gaming.
Jamil Abshire (verified owner) –
The 34″ curved monitor has completely transformed my work experience. * Clear, bright monitor, adjustable in every direction. * Wide aspect ratio allows for many application windows to be placed side by side * Curved screen gives a slight wrap around feeling to content on the furthest left and right edges of the screen making those items feel closer to the viewer than if that content was on a flat panel screen * Thunderbolt and USB-C ports allow for all of the computers and items on my desk to run through the back of the monitor with one wire connecting and powering either my Mac or PC.
Joana McCullough (verified owner) –
I started using this monitor just for gaming which is awesome, then tried it for streaming and regular computer uses. I love how the curves really make you feel like you’re in the game, almost like a 360 experience. The graphics come alive and the sound is amazing. I tried it for streaming which was also great but it I wasn’t as thrilled with using it with regular computer programs. Overall, this is a great monitor and I would highly recommend it for gaming and streaming.
Raphaelle Walsh (verified owner) –
Great for multitasking work, gaming, or just being creative.
Damion Schmeler (verified owner) –
overall it’s good, but black-colored text on ms word becomes yellowish during scrolling up and down. i tried many settings, but it still happens.
Ludwig Kessler (verified owner) –
For work. Word processing with multiple pages on the screen is helpful.
Josh Bogisich (verified owner) –
perfect monitor, relatively small footprint. features hdmi, displayport, usbs, usb-c so you can run just about any new system currently available. energy saving features and the picture-n-picture and picture-by-picture are phenomal. charges my mac and beats headphones, the extra ports making adding peripherals a breeze. looking to get one more since its vesa compatible and add it to a two monitor mount.
Magnolia Kihn (verified owner) –
Best for colleges gaming and other personal uses. Excellent resolution and pic quality.
Rupert Mills (verified owner) –
there is so much i enjoy about this monitor. the only downfall is the lack of programs that use it’s resolution to the fullest extent. the crisp, clean lines and incredible refresh speed make up for the other thing. a must-have with any computer!
Ayana Brown (verified owner) –
great monitor (size, look, etc.), but for this price it should be 100% reliable… and it was not. after two weeks of use the thunderbolt port failed to display picture and audio. now i have to deal with a repair process that is not user friendly.
Montana D’Amore (verified owner) –
I have two of these and I use them for work. My only issue is the speaker making popping noises. I hope to be able to use it for a long time.
Eli Treutel (verified owner) –
Maybe I’m too spoiled as a Mac user. There’s no built-in camera, okay no problem. But no auto brightness either. Not even keyboard brightness control. This means having to reach back to the tiny joystick and navigating several menus every day. And I’m running two of these side-by-side with a 2018 Mac mini, so that’s double the physical fiddling every morning and night, once on the left, then again on the right. As for performance, so far so good, but there’s a lag when booting up, even when using Apple’s expensive 0.8M active Thunderbolt 3 cable. No built-in microphone, either. Otherwise it’s pretty good as an adapted PC display.