The Koorui 24E4 is currently the cheapest 165Hz gaming monitor you can find on retailers like Amazon. You get a 165Hz VA gaming panel for the price of an office monitor, so it’s a no-brainer for anyone who wants to build a setup without spending a small fortune. However, we’re curious to see if that extra low price carries penalties that may break the deal for some.
Koorui 24E4 Specifications
- Screen Size: 24 Inches
- Resolution:1920 x 1080 FHD
- Aspect Ratio: 16:9
- Panel Technology: Vertical Alignment (VA)
- Refresh Rate: 165Hz
- Response Time: 1ms
- Contrast Ratio: 3000:1 (Static)
- Brightness: 250 cd/m²
- Speakers: None
- Stand: Height – No
- Stand: Tilt – Yes
- Stand: Swivel – No
- Stand: Pivot – No
- VESA Compatibility: Yes (75 x 75)
- Connectivity: DisplayPort 1.2 x 1, HDMI 1.4 x 2, 3.5mm Jack x 1
- Dimensions (W x H x D): 21.34” x 16.69” x 5.03”
- Weight: 7.52 lbs
Design and Features
The Koorui 24E4 doesn’t look flashy, so the only thing we could think to correlate with gaming is the red logo on its face. It has a matte black finish that is easy to maintain and won’t clash with most setups. The display has a bezel-free design but still has inner borders like most modern A monitors.
It’s a regular-sized screen, so any kind of desk, including the smaller ones in study corners, can accommodate it. It only needs 5.03 inches of depth, so you can easily place it together with other large peripherals like bookshelf speakers. It’s also very light for a 24-inch monitor, so it’s suitable and portable enough for tournaments and LAN parties.
Build quality is where it doesn’t do so great since it feels lighter and plasticky compared to offerings from premium brands like the Acer XFA243Y S. There are no cosmetic defects, but the plastic panels feel thinner and easier to flex or crack when squeezed with enough force. The stand also has some wobbling, but it’s fine if you don’t nudge the screen.
It makes sense that the Koorui 24E4 has OSD buttons instead of a joystick since it’s a very affordable gaming monitor. The keys are located under the bottom bezel, making them easy to access while using the product. They are also labeled, but it still takes longer to get used to them than a joystick.
The included stand only offers tilt, just like most budget models in the market. You have to position it perfectly or maybe even use a few books to prop it up if you are extra tall. You can use VESA mounts, but having to buy one breaks the notion of saving a larger sum with this monitor.
It connectivity layout only has DisplayPort 1.2 and two HDMI 2.0 slots, along with a 3.5mm audio jack. That’s more than most will need for basic everyday use. Some USB slots would be handy, but we understand that Koorui had to make some omissions to drop its pricing this far.
You also don’t get speakers with this model, but that’s also acceptable in our opinion. Experience tells us that budget models will always include the most basic set, so they are practically useless for gaming or entertainment.
Display and Performance
The Koorui 24E4 sports a 24-inch flat VA panel with a 1920 x 1080 resolution, a 165Hz refresh rate, and a 1ms boosted response time. The backlight has a 250 cd/m2 output, although its contrast isn’t listed on the official website. It also doesn’t mention HDR functionality, but that’s simply because it doesn’t have the gear for it.
24-inch gaming monitors are popular because they are considered as the pro-gaming format but are also very affordable. It’s not the sharpest, but it offers excellent legibility and visibility for most uses. It’s also easy to run games at maximum refresh rates with any GPU, so you don’t have to build the most expensive PC for it.
The Koorui 24E4 rendered 100% sRGB and 79% of DCI-P3 for decent colors in games and movies. It’s also not accurate out of the box, with a deltaE average of 3.71. It is not great for professional use, but gamers won’t mind the extra saturation in some shades.
Calibrating it improved the dE average to a gentler 1.74, translating into a more neutral tone than the default setting. The downside is that you will need a colorimeter to achieve this, and those are not cheap. It’s impractical to get one for a cheap gaming monitor and then attempt to tweak it into becoming a prosumer alternative.
The Koorui 24E4’s backlight reached 251 cd/2 at 100% brightness, so it can’t off a lot of glare in a well-lit room. Its contrast reached 2411:1 at 80% brightness, so it’s capable of deeper blacks than its IPSP counterparts. Games with darker or eerie environments look convincing, so it’s great for immersive titles, even if it is at the lower end of the price spectrum.
Panel uniformity for the test sample did not have major issues like backlight bleeding. There was some clouding in its quadrants, but they are difficult to notice unless you look for them in dark scenes. Note that this can vary due to manufacturing tolerances, so there are better and worse units out there.
The Koorui 24E4’s main weakness is its slower response time, producing visible trailing and ghosting in fast-paced scenes. It doesn’t have a capable overdrive to solve this, so you are stuck with the issue. It’s not a big problem for slower-paced titles, but those who play faster games like Valorant will complain about it.
The Koorui 24E4 is compatible with FreeSync and G-Sync for tear and stutter-free gaming. Both GPU brands have suitable budget cards, so it is wise to have the option to pick between them without losing VRR functionality. Its input lag sits at 5ms at 165Hz, so it is as responsive as its more expensive counterparts.
Thoughts on the Koorui 24E4
The Koorui 24E4 offers more than what you pay for it, thanks to its generous refresh rate and contrast. However, its best characteristic is its very lower price which you won’t catch with other brands. It is not the flashiest or built like a tank, but it will serve its purpose well in a budget to midrange gaming setup.
But on the other hand, there are some limitations that come with the extremely lowered price point. The panel isn’t the best in imaging quality and pixel response times, plus the device’s features are rather limited. However, we still think that it offers a lot of bang for your buck, considering that it’s priced like a 60Hz office monitor.
Pros:
- Very Low Price
- High Contrast
- FreeSync and G-Sync Compatible
Cons:
- Prone to Blurring
- Limited Features
About the Author: 
Paolo has been a gaming veteran since the golden days of Doom and Warcraft and has been building gaming systems for family, friends, and colleagues since junior high. High-performance monitors are one of his fixations; he believes that every citizen’s right to enjoy one. He has gone through several pieces of hardware in pursuit of every bit of performance gain, much to the dismay of his wallet. He now works with Monitornerds to scrutinize the latest gear to create reviews that accentuate the seldom explained aspects of a PC monitor.
Leave a Reply