Koorui 34E6UC review: decent size and specs but lacks the finer details
Table of Contents
With most hardware becoming more expensive these days, you might be looking to save some cash on other components, and that’s where budget monitors come in. They bring gaming monitors into reach while offering core features at a lower price, so you can enjoy your games with a more effective-looking display.
That is where Koorui comes in, bringing a vast selection of monitors that range in capability and price. But today I’m putting the 34E6UC to the test in a monitor review. It’s a fast, 1440p display that also comes curved, giving it even greater immersion and plenty of screen space to work with. Here’s how it fares in our tests.
- Panel type: LCD VA
- Resolution: 3440 x 1440
- Refresh rate: 180Hz
- Response time: 1ms
- Panel size: 34-inch, R1000 curvature
- I/O ports: 1x DisplayPort, 2x HDMI, 1x 3.5mm audio
The Koorui 34E6UC monitor is a rather value-worthy ultrawide and curved monitor for the desk. With it taking up little space, but with plenty of speed and size to it, the monitor has a surprisingly good look and feel. Of course it’s not perfect, with the response time being rather slow and the color being inaccurate without calibration, but you do get a lot of screen space for the price and a rather effective option for you desk.
- Plenty of screen space
- Great speed and size
- Ergonomic stand doesn’t take up a lot of space
- Intuitive and easy control
- Not great response time
- Uniformity and color accuracy are not so great
- Limited connectivity
Pricing and availability
Koorui monitors are available in a handful of countries. With a primarily US and European focus, the brand is available from just a few retailers. In the case of the 34E6UC, it is found on Amazon and Newegg for $359.99/$270.00, respectively. Depending on which price you pick it up for, it sits on par with, or cheaper than, some of the other options out there.
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In comparison, the likes of the Samsung ViewFinity S50GC at $329.99, the LG 34U530A-W for $269.99, the Sceptre C345B-QUT168 for $199.97, and the Samsung 34′ Odyssey G5 for $399.99 are all available at different price points. All of them vary in refresh rate and connectivity.
Koorui 34E6UC box front, Image by PC Guide
Koorui 34E6UC box side, Image by PC Guide
Koorui 34E6UC with box (2), Image by PC Guide
Design and specifications
The packaging on the Koorui is rather simple, with the outer cardboard box holding the polystyrene packaging inside. Even for this ultrawide, it does require sliding the whole inside out, unlike many new big-name brands that let you open the box from the side while it’s flat. In this case, that led to some of the accessories tumbling out and off the table. The stand is taped down, so the same should probably be done for the other parts too.
Koorui 34E6UC open box top, Image by PC Guide
Koorui 34E6UC inner package, Image by PC Guide
Unveiling the inner packaging brings out a big polystyrene box with the lid filled with the monitor’s accessories, which are spread across the various gaps. Those consist of just a couple of things: the power adapter, DP cable, manual & guide, and some VESA mounting standoffs. The monitor itself is then hidden underneath in a very curved section of packaging that hugs its design.
Koorui 34E6UC inner package, Image by PC Guide
Koorui 34E6UC extras, Image by PC Guide
Koorui 34E6UC unpacked, Image by PC Guide
Installing the stand is still rather easy, with a simple screw to attach the two parts and then slotting it into the hole in the back of the monitor, although this does require a bit more mangling of the protective cover around the monitor. The stand itself comes with a rather long stem that features a cable holder at the back for a small amount of cable management.
It does manage to keep its footprint rather small, with it utilizing just two-prong feet to keep the large monitor upright. At the same time, it has a decent amount of adjustment available on the screen: no rotation, but it does have a height lift of 110 mm, left and right adjustment between -15° and 15°, and a tilt of -5° and 20°.
Koorui 34E6UC cable management and stand base, Image by PC Guide
Koorui 34E6UC back, Image by PC Guide
Koorui 34E6UC stand front, Image by PC Guide
Koorui 34E6UC side on (2), Image by PC Guide
Koorui 34E6UC side on (1), Image by PC Guide
Koorui 34E6UC side on (3), Image by PC Guide
Koorui 34E6UC side on (4), Image by PC Guide
At the back, the monitor does look rather fresh and exciting, with a red trim right above the stand and wing-like cuts running across to the edges on the bottom half. On the left side is the single joystick that powers and controls the screen.
As for the bottom of the monitor, it’s filled with vent holes, with a large recess in the center housing the monitor’s connectivity. Which, in the Koorui, is rather minimal in count and variety, with just a DisplayPort, two HDMI ports, and an audio port alongside the power barrel plug. The latter is slightly annoying, as the power cable has an external brick rather than having the power supply embedded inside the monitor.
Koorui 34E6UC back, Image by PC Guide
Koorui 34E6UC stand connection, Image by PC Guide
Koorui 34E6UC joystick, Image by PC Guide
Koorui 34E6UC ports, Image by PC Guide
Koorui 34E6UC power light, Image by PC Guide
From the front, the monitor shows off the wide screen and its curvature. With the 1000R, 34-inch screen, it has a rather foreboding presence on the table and somehow keeps up with the rather slim-looking stand. This is helped by the thicker-looking bottom bar, which has a rather stealthily colored Koorui logo in the center, keeping things rather clean and minimal.
Koorui 34E6UC front on, Image by PC Guide
Koorui 34E6UC with box, Image by PC Guide
Koorui 34E6UC with box (2), Image by PC Guide
Koorui 34E6UC stand front, Image by PC Guide
OSD, settings, and warranty
When setting up the monitor, the joystick on the back provides an easy and quick method of navigating the menus. The first quick menu gives easy options for input, brightness, power, and the rest of the menu. In that full menu, you find a bunch of options for more specific color and picture tweaks.
Firstly, there is a game mode that allows for adaptive sync, as well as using a crosshair, timer, and adjusting response time. Then there’s the brightness and contrast in their own menu, followed by the display options that allow for aspect ratio, HDR, sharpness, and gamma. Next up is the color temperature adjustment, which has a custom option too, along with an input menu, and lastly the scenario mode that offers a variety of presets to use before the final settings menu for the OSD itself.
Koorui 34E6UC GUI (1), Image by PC Guide
Koorui 34E6UC GUI (2), Image by PC Guide
Koorui 34E6UC GUI (3), Image by PC Guide
Koorui 34E6UC GUI (4), Image by PC Guide
Koorui 34E6UC GUI (5), Image by PC Guide
Koorui 34E6UC GUI (6), Image by PC Guide
Koorui 34E6UC GUI (7), Image by PC Guide
Koorui 34E6UC GUI (8), Image by PC Guide
That does offer a good amount of adjustments to the monitor’s color and looks, a handy thing to have for the next part where I did take it through a color calibration process. The way to get through the menu is very intuitive, unlike the buttons that the other Koorui monitors I tested come with.
When it comes to the warranty of the screen, it is a rather limited time period, with just one year of coverage on the monitor.
Screen testing and performance
After setting it up and going over the details, I then tested its capabilities. Utilizing a Calibrite sensor and DisplayCAL software, I was able to measure the display performance. I checked various modes, what they can reproduce, and the uniformity of the panel, as well as calibrating it to see what it is capable of when set correctly.
Koorui 34E6UC setup (4), Image by PC Guide
Koorui 34E6UC setup (3), Image by PC Guide
Koorui 34E6UC setup (2), Image by PC Guide
Koorui 34E6UC setup (1), Image by PC Guide
Color gamut
First up is the color gamut of the display, the range of colors it is capable of recreating. For our specific 34E6UC, it reached a coverage of 99.3% in the sRGB spectrum, 79.7% in Adobe RGB, and 87.1% in DCI-P3. That does give it great coverage for sRGB, with the others not so much, so depending on the calibration, it can be an effective option for sRGB work.
Koorui 34E6UC sRGB, Image by PC Guide
Koorui 34E6UC AdobeRGB, Image by PC Guide
Koorui 34E6UC DCI-P3, Image by PC Guide
Color accuracy, contrast, and brightness
With that gamut coverage, I did check how accurate it is in reproducing those colors. I checked the various modes that come with the monitor and how it works when calibrated too.
| White | Black | Contrast | Average deltaE*00 | Max deltaE*00 | Gamma | Brightness | |
|---|---|---|---|---|---|---|---|
| IDEAL | 6500K | 0/m² | infinity:1 | 0 | 0 | 2.2 | ~ |
| Standard (OOB) | 7074K | 0.0353 cd/m² | 3385.5:1 | 1.98 | 6.53 | 2.21 | 119.4 cd/m² |
| Standard Warm | 6395K | 0.0354 cd/m² | 2930.9:1 | 2.18 | 3.97 | 2.18 | 103.9 cd/m² |
| Standard cool | 8795K | 0.0353 cd/m² | 2861.3:1 | 2.08 | 8.08 | 2.22 | 101 cd/m² |
| FPS | 7189K | 0.2103 cd/m² | 573.8:1 | 4.47 | 9.55 | 2.04 | 120.7 cd/m² |
| Movie | 6430K | 0.0413 cd/m² | 2897.3:1 | 3.63 | 12.48 | 2.19 | 119.7 cd/m² |
| DCI-P3 | 6268K | 0.0339 cd/m² | 3567.7:1 | 2.77 | 6.69 | 2.21 | 120.9 cd/m² |
| sRGB | 6224K | 0.0342 cd/m² | 3490.2:1 | 2.04 | 4.55 | 2.22 | 119.4 cd/m² |
| Calibrated | 6510K | 0.0326 cd/m² | 3681.7:1 | 0.5 | 3 | 2.2 | 120 cd/m² |
By default, out of the box, the monitor was set to the standard scenario with a standard color temperature too. In that setting, it was running a lot cooler in white balance, with the result sitting 500K above the ideal. The black level and contrast were some of the better results of the options, and generally OK for an LCD, as it doesn’t have the capability of OLEDs to produce the same deep blacks without a white backlight.
For color accuracy, it averaged a deltaE of 1.98, which does keep it mostly in the right look, although the max deltaE varied much further away, reaching 6.53 in some colors, so it does stray far away in certain scenarios. That is still the best of the scenarios in terms of color accuracy, however, as things get worse elsewhere. Standard and sRGB stay close to 2, with the warm color palette lowering the maximum to below 4, with sRGB just at 4.55 too.
Calibrating the monitor does bring it a lot closer to the ideal, giving it a more accurate look, with white balance, brightness, and gamma all coming close to the ideal. The black levels, contrast, and color deltas are good for the panel type and still make for good viewing.
Panel uniformity
I then checked the uniformity of the panel, measuring the various squares across it to see how they compare to each other, looking at how the brightness and color accuracy varied across it.
In the case of the 34E6UC, it doesn’t deviate a lot. Most of the center passes nominal tolerance, represented by the yellow and green squares. But it’s in the bottom right, left, and top left corners that it exceeds even that, with brightness dropping by around 15-20% in those areas. This can be a noticeable amount in those cases.
Viewing angles
When it comes to the viewing angles of the Koorui monitor, it has a reported 178° of visibility, and it does come through that way, as seen in the images below. Although with the curved widescreen view, it’s unlikely you wouldn’t just be looking at it straight on, since that’s where you get to see the most of it. If you do have it positioned off-axis, though, it still offers decent visibility.
Koorui 34E6UC viewing angle (3), Image by PC Guide
Koorui 34E6UC viewing angle (2), Image by PC Guide
Koorui 34E6UC viewing angle (1), Image by PC Guide
Gaming performance
Of course, I put the monitor to the test with a bunch of games to see how it feels to use. In this case, the 3440 x 1440 resolution provides a higher resolution and plenty of screen space on the 34-inch display, giving it an excellent field of view and viewing area. So how does that translate to being used in Counter-Strike 2 and Cyberpunk 2077?
Koorui 34E6UC in use (3), Image by PC Guide
Koorui 34E6UC in use (4), Image by PC Guide
Koorui 34E6UC in use (5), Image by PC Guide
Koorui 34E6UC in use (6), Image by PC Guide
Koorui 34E6UC in use (7), Image by PC Guide
Koorui 34E6UC in use (8), Image by PC Guide
Koorui 34E6UC in use (9), Image by PC Guide
On the large screen and fast refresh rate, it does give CS2 plenty of screen space to view the game on and bring those frames in quick succession. That 180 Hz does provide quick and great-looking visuals, especially when free from tearing and other artifacts, which I was worried about with the panel.
Along with the wider screen giving more screen space to see a greater, wider area of the game, it allows you to see more of the map and makes sure you don’t miss anything coming up. The fast responsiveness also helped bring that information rather quickly to the screen and allowed for a quick response to what was happening visually. Although it doesn’t reach the hundreds of Hz offered by some higher-end displays, it’s still a rather effective option considering the pricing.
When it comes to Cyberpunk, the monitor similarly offers plenty of visual space to enjoy the various visuals of the game. The ultrawide provides plenty of space to enjoy more of Night City in your periphery, while its fast refresh rate also provides an impressive look to the game.
What the screen does lack is some of that color depth that OLEDs or similar monitors provide. Of course, it does have good sRGB coverage and okay accuracy, but those black levels and contrast do lack a bit of that depth that provides some great visual appeal and gives the image more impact.
Response rate
I also measured the response rate of the monitor using the OSRTT (Open Source Response Testing Tool), which measures the responsiveness of the panel when changing between colors and the rating it gets for it.
Koorui 34E6UC response rate VSync, Image by PC Guide
Koorui 34E6UC response rate VSync off, Image by PC Guide
In that case, the Koorui monitor does have some struggles. Going from 0, or off, it is slow to respond to the inputs, reaching even 12 ms in some of the scenarios. That gives it an average completion time of around 13ms, with the average perceived time of 5-6ms. Even with those slow response rates, it doesn’t error too much, with an average of 0.5, and it still gets an average rating of 87, with a best of 95 and worst of 73. So, while it manages to hit the right timings, it can still be slow to respond.
General performance and productivity
When it comes to general usage, the Koorui 34E6UC does, of course, offer plenty of screen space for any kind of task you need to perform on it. Being able to have multiple windows across it makes it a lot easier to manage than multi-monitor setups, while also meaning I had to swivel my head around a lot less.
Koorui 34E6UC in use (1), Image by PC Guide
Koorui 34E6UC in use (2), Image by PC Guide
It also offers picture-in-picture and picture-by-picture, providing a way to have a secondary input show up on the screen as well. Although lacking a KVM to use it, it does allow for a secondary screen for watching or having more to look at.
Until the monitor is calibrated, it does lack great color coverage in anything but sRGB. With 99.3% and a delta of 2, it does make it OK for some light color work, but it isn’t exactly a pro monitor for the job, even with calibration making it a lot more accurate. The other color spaces don’t quite produce the same result, so it’s more of a value option for anyone who wants plenty of screen space for the job.
- Panel type: LCD VA
- Resolution: 3440 x 1440
- Refresh rate: 180Hz
- Response time: 1ms
- Panel size: 34-inch, R1000 curvature
- I/O ports: 1x DisplayPort, 2x HDMI, 1x 3.5mm audio
Conclusion
Overall, the Koorui 34E6UC is a solid value option if you’re looking for a large ultrawide display without spending a huge amount of money. Its 3440 x 1440 resolution, 180 Hz refresh rate, 1000R curve, and 34-inch panel make it particularly well suited to gaming, with plenty of screen space and a fast, smooth experience in games like Counter-Strike 2 and Cyberpunk 2077. The large format also works well for productivity, giving you plenty of room for multiple windows without needing a second monitor.
There are some compromises to consider, though. Colour coverage is strongest in sRGB, while Adobe RGB and DCI-P3 coverage is more limited, and the out-of-the-box colour accuracy isn’t particularly impressive until the display has been calibrated. The panel also suffers from some uniformity issues towards the corners, while the response times can be relatively slow despite the 180 Hz refresh rate. Connectivity is fairly basic, too, with no USB hub or KVM, and the one-year warranty is shorter than we’d ideally like to see. Still, if you’re primarily after a spacious, high-refresh-rate ultrawide for gaming and general use, the 34E6UC offers a lot of screen for the money, provided you’re willing to accept its limitations.
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