If you want better viewing angles
Choose MSI MPG 274URDFW E16M. It scores 4.5 vs 3.0 for viewing angles, with a 4.0 overall score.
KOORUI S2741LM Monitor Review
Bottom Line
Immense brightness, sharp 4K and a switchable 320Hz mode make this a versatile gaming-and-work monitor. Local dimming, small HDR highlights and color calibration need more attention than the headline specs suggest.
PC gamers who alternate between detailed 4K games and high-frame-rate multiplayer, plus people using one screen for bright-room productivity and laptop docking.
Buyers seeking effortless factory color accuracy, consistently punchy tiny HDR highlights, or OLED-class motion without tuning.
Verdict
The KOORUI S2741LM packs two useful gaming experiences into one 27-inch monitor: crisp 4K at 160Hz for detailed titles and a faster 1080p/320Hz mode for competitive play. Its biggest strength is the exceptionally bright Mini LED backlight, which makes HDR scenes vivid and keeps the image legible in bright rooms. The wide color gamut, crisp text, adjustable stand, 90W USB-C and KVM switch also make it a compelling productivity display. It is not effortless, however. Local dimming can suppress small highlights, crush dark detail or make dark-themed desktop apps hard to read; some 60Hz usage also shows flicker. Color profiles and careful presets may be necessary for reliable editing. The fastest mode offers additional smoothness but not perfect pixel transitions, and OLED remains stronger for pure motion performance. For buyers prioritizing brightness, flexibility and a work-friendly LCD, it is a persuasive value at the right price.
Feature Scorecards
Summary
91 reviewed features-
Very positive 4.5-5.043 (47%)
-
Positive 3.5-4.423 (25%)
-
Neutral 2.5-3.423 (25%)
-
Negative 1.5-2.42 (2%)
Pros highlights
-
Its 1,152-zone Mini LED backlight brings strong HDR brightness and contrast, but dark-detail crushing, red-leaning color and muted tiny highlights divide opinion.
-
Users and testers largely admire the bright 4K image and flexible refresh options, while noting local-dimming and color setup quirks.
-
This 4K/320Hz Mini LED feature set earns strong value praise at competitive prices; OLED and other Mini LED discounts can change the calculation.
-
High-zone-count backlighting creates strong HDR contrast but can dim small highlights and low-contrast desktop text.
-
Unusually high SDR and large-scene HDR brightness makes the screen stand out, especially in daylight. Very small bright highlights are less striking than the peak figures suggest.
-
Native 4K at 160Hz is sharp for detailed games, while 1080p at 320Hz prioritizes competitive speed. The faster mode sacrifices detail and can expose motion or switching quirks.
Cons highlights
-
Strong peak brightness does not extend to the smallest HDR highlights, which can be substantially dimmed to prevent blooming.
-
Well-configured gamut modes and profiling can look excellent; native colors may be oversaturated and HDR tones sometimes shift red.
-
Dark detail varies by preset: the Game HDR mode and gentle shadow tweaks reveal more, while Movie and some gamut modes crush blacks.
-
Typical IPS breadth is compromised by off-axis glow and brightness shifts, especially with local dimming in darker scenes.
-
Halos are relatively modest from directly ahead but become noticeable off-axis or around small bright shapes on dark backgrounds.
-
The joystick is intuitive once located, but buried options, repeated navigation and an easily hit mode button add friction.
Use Cases
Best for
-
A strong all-rounder for work by day and fast or cinematic gaming afterward, thanks to 4K/160Hz, 1080p/320Hz, USB-C and KVM switching.
-
High SDR brightness and strong reflection control make windows, daylight and bright offices easy to handle.
-
4K sharpness, standard RGB text layout, ergonomic support and laptop connectivity make the monitor highly capable for work. Local dimming is best disabled for dark static apps.
Not ideal for
-
Programming and codingFine text is a plus, but dark-theme editors can become too dim or low-contrast when SDR local dimming is enabled.
Compared With Category Average
Compared with other Monitors, this product is above average in PC signal connection reliability, VRR flicker, SDR/HDR mode switching, near average in single-player cinematic gaming suitability, Shadow detail, below average in USB port accessibility, color accuracy, viewing angles.
Comparison summary
87 compared features-
Above average 0.4+ pts higher47 (54%)
-
Same as average within 0.3 pts26 (30%)
-
Below average 0.4+ pts lower14 (16%)
Largest category differences
| Attribute | This product | Category average | Difference |
|---|---|---|---|
| PC signal connection reliability | 5.0 | 2.5 | +2.5 |
| USB port accessibility | 2.0 | 4.2 | -2.2 |
| VRR flicker | 5.0 | 3.1 | +1.9 |
| SDR/HDR mode switching | 4.5 | 2.9 | +1.6 |
| KVM switch performance | 4.5 | 3.1 | +1.4 |
| color accuracy | 2.8 | 4.1 | -1.3 |
| Backlight strobing | 4.0 | 2.6 | +1.4 |
| PWM flicker comfort | 5.0 | 3.6 | +1.4 |
Consider This Instead
If you want better HDR highlight detail
Choose Samsung Odyssey OLED G80SH S32HG802S. It scores 5.0 vs 2.7 for HDR highlight detail, with a 4.1 overall score.
If you want better local dimming performance
Choose TCL 32R84. It scores 4.5 vs 3.9 for local dimming performance, with a 4.2 overall score.
If you want better color accuracy
Choose ASUS ROG Strix 5K XG27JCG. It scores 4.6 vs 2.8 for color accuracy, with a 4.1 overall score.
Compared in Reviews
Products reviewers directly compared with this model, grouped into quick takeaways.
- Alternative: purchase availability An owner chose KOORUI after waiting for the MSI monitor through repeated delays.
- Alternative: brightness versus contrast MSI emphasizes stronger HDR blacks while KOORUI pushes higher peak brightness.
- Worse: brightness and response KOORUI is brighter with better motion handling than this similarly equipped MSI.
- Older model: 4K detail, dual-mode versus lower cost S2741LM offers higher resolution and dual-mode; the 1440p alternative costs less.
- Older model: native resolution and dual mode S2741LM sharpens the image, adds 320Hz dual mode and improves console connectivity.
- Worse: local dimming and motion KOORUI offers SDR dimming, less HDR haloing and clearer motion than this Acer.
FAQ
Can the KOORUI S2741LM run 4K at 160Hz and 1080p at 320Hz?
Yes. Its dual-mode design switches between high-resolution gaming at 160Hz and a lower-detail 320Hz mode for fast multiplayer play. Switching modes before launching a game may avoid glitches.
Is its HDR noticeably better than ordinary IPS monitors?
Yes. Its Mini LED backlight produces much brighter large HDR scenes and deeper blacks, though small bright highlights may be muted and off-axis blooming can appear.
Is it suitable for color-sensitive photography and design?
It has broad Adobe RGB and DCI-P3 coverage and can calibrate well. Factory color and ICC profile handling are imperfect, so calibrated presets are advisable for demanding work.
Does it work with PS5 and Xbox consoles?
Reviews report good HDMI console support, including native 4K at 120Hz. There are limitations such as absent Dolby Vision, and some 60Hz local-dimming flicker has been reported.
Can it charge a laptop through USB-C?
Yes. Its USB-C connection carries video and supports up to 90W charging, with a KVM switch to share accessories between computers.
How does local dimming perform for office work?
It improves contrast for video and HDR games but can darken text and low-contrast elements in dark-mode apps. Switching local dimming off for static work is a reasonable workaround.
Is the 320Hz mode as clear as native 4K?
No. It lowers resolution to 1080p and can show some smearing or overshoot. It makes most sense when speed matters more than fine detail.
Sample Expert Reviews We Analyzed
These are a few of the reviews included in our analysis.
Video Reviews
YouTube - Viktor's Reality
- Review score
- 4.5
YouTube - Matt On Tech
- Review score
- 4.1
YouTube - Viktor's Reality
- Review score
- 4.5
Article Reviews
itechguides.com
Our KOORUI S2741LM review examines 4K 160Hz and 1080p 320Hz modes, 1,152-zone Mini LED HDR, USB-C 90W charging, KVM, console support, color...
- Review score
- 4.2
techyorker.com
KOORUI S2741LM review covering 4K 160Hz, 1080p 320Hz, 1,152-zone Mini LED HDR, gaming response, console support, USB-C 90W charging, KVM and...
- Review score
- 3.9
rottenwifi.com
KOORUI S2741LM review covering 4K 160Hz and 1080p 320Hz modes, 1,152-zone Mini LED HDR, gaming response, PS5/Xbox support, USB-C 90W, KVM...
- Review score
- 4.0
techspot.com
From premium OLEDs to affordable IPS models, these are the best 4K gaming monitors of 2026, based on hands-on testing, current pricing, HDR...
- Review score
- 4.5
tftcentral.co.uk
A flagship 27" model from KOORUI with a 4K resolution and 160Hz, along with a 1152-zone Mini LED backlight and 320Hz dual-mode support
- Review score
- 4.0
Top Monitors to Consider
This 360Hz QD-OLED ultrawide delivers exceptional gaming motion, vibrant HDR and dramatically cleaner text. Its high price, less-than-perfect bright-room blacks and occasional HDR dimming are the main reasons to hesitate.
Pros: color gamut, contrast
Cons: value for money, Resolution
The 360Hz QD-OLED panel delivers exceptional HDR gaming, responsive motion, and cleaner text than earlier ultrawides. Its 3440×1440 resolution is less sharp than 4K, and premium pricing remains a hurdle.
Pros: refresh rate, Text fringing
Cons: Resolution, GPU demands
A huge, sharp ultrawide workspace and unusually capable Thunderbolt dock make the U4025QW outstanding for demanding productivity and editing. Its high price, modest HDR, and imperfect motion handling keep it...
Pros: overall picture quality, color accuracy
Cons: value for money, built-in speakers
Lightning-fast 360Hz OLED gaming, rich color and an unusually flexible USB-C/KVM setup are the big draws. Strong room lighting, limited full-screen HDR brightness and static-content burn-in concerns keep it from...
Pros: color gamut, overall satisfaction
Cons: reflection handling, VRR flicker