KOORUI S2741LM: Specs, Features, Pros & Cons
This review measures the KOORUI S2741LM against the full 41-spec sheet we track for monitors, comparing it like for like with the 69 other models in our database. It earns a VS Score of 55 out of 100 — the weighted result of every verified specification measured against the class average.
On the spec sheet it is strongest in connectivity and weakest in gaming. Its clearest single advantage over the class average: 607.58 nits more peak brightness — 1,400 nits vs 792.42 nits (avg). None of our retail partners currently lists the KOORUI S2741LM, so availability may be limited; a missing price never affects the VS Score. A transparency note: this spec sheet is 76% complete. Anything unverified shows as Unknown and is left out of the score — we never estimate a missing value.
Category strengths
Where the KOORUI S2741LM beats the average
- 607.58 nits more peak brightness ?1,400 nits vs 792.42 nits (avg)
- Has local dimming ?
- Has USB-C ?
- 30.21 ppi more pixel density ?163 ppi vs 132.79 ppi (avg)
- Has USB hub ?
- 0.26 more HDMI ports ?2 vs 1.74 (avg)
- 10.94 W more USB-C power delivery ?90 W vs 79.06 W (avg)
- Has pivot ?
- Has headphone output ?
- Has swivel ?
Where the KOORUI S2741LM trails the average
- 56.37 Hz less refresh rate ?160 Hz vs 216.37 Hz (avg)
- 2.29" (5.81 cm) less screen size ?27" (68.58 cm) vs 29.29" (74.4 cm) (avg)
- No built-in speakers ?
- 0.06 less DisplayPort inputs ?1 vs 1.06 (avg)
- 60.57 less local dimming zones ?1,152 vs 1,212.57 (avg)
Editor’s note
The S2741LM is the value story in this group, and the number that carries it is 1,152 local-dimming zones.
Zone count is what separates HDR that works from HDR that is a sticker. Most monitors at this price have none at all; this one divides a QD-Mini LED backlight into over a thousand independently controlled regions, reaches 1,400 nits peak, and is certified DisplayHDR 1000. In practice that means a bright highlight can sit next to genuinely dark surroundings without the whole panel lifting — the thing OLED does perfectly and cheap LCDs cannot do at all.
The rest is a well-specified 27-inch 4K: 163 pixels per inch, so text is sharp; 160 Hz with FreeSync; 1 ms response; 98% DCI-P3 at 10-bit. USB-C carries 90 W of laptop charging alongside a USB hub, two HDMI 2.1 ports and DisplayPort 1.4, and the stand adjusts fully including pivot.
Two honest caveats. It is an IPS panel, so native contrast before the dimming kicks in is modest, and zone-lit backlights always show some halo around small bright objects on black — a thousand zones reduce that, they do not remove it. And KOORUI is a less familiar name than the brands around it, which matters for warranty and support rather than for the hardware.
Buy it if you want real HDR and 4K sharpness for the least money and are comfortable with a lesser-known brand. Buy an OLED if perfect black is the priority, or a Dell if support matters more than specification.
Specifications
Quality bars are generated automatically against 69 other monitors.
Picture
Larger screens are more immersive; measured diagonally.
The total pixel count; higher is sharper.
The panel technology; OLED offers the best contrast.
The more specific panel or backlight technology (e.g. QD-OLED, WOLED or Mini-LED VA).
The native or supported bit depth used to reproduce colour gradients.
The display surface treatment and its balance of glare control and image clarity.
Higher refresh rates are smoother for gaming and scrolling.
Grey-to-grey response; lower reduces motion blur.
Higher brightness makes HDR highlights pop.
The ratio between the brightest and darkest output.
Wider colour gamut for more vivid, accurate colour.
The certified HDR tier.
Pixels per inch; higher looks sharper.
Dims parts of the backlight independently to improve contrast.
More independently controlled zones can improve HDR precision.
Gaming
Variable-refresh technology for tear-free motion.
Syncs the refresh rate to the GPU.
Backlight strobing for clearer motion.
The delay between an input and the image changing; lower is better.
The minimum-to-maximum refresh range over which variable refresh rate operates.
Ergonomics & design
The width-to-height ratio (e.g. 16:9, 21:9).
The curve radius (e.g. 1000R); blank for a flat panel.
Raise and lower the panel.
Angle the panel up and down.
Rotate the panel left and right.
Rotate to portrait orientation.
The VESA wall / arm mount pattern (e.g. 100 x 100 mm).
Connectivity
More HDMI inputs connect more devices.
The highest HDMI standard supported by the monitor.
DisplayPort inputs, preferred for high refresh rates.
The highest DisplayPort standard supported by the monitor.
A USB-C input, often with power delivery for laptops.
Charges a connected laptop over USB-C.
Built-in USB ports for peripherals.
Integrated speakers.
A 3.5 mm audio output for headphones or external speakers.
Control two computers with one keyboard and mouse.
Features
A built-in camera for video calls.
A built-in microphone for calls.
A wired network port for USB-C docking.
Shows inputs from two computers side by side.
How the VS Score works — and what it can’t tell you
Every measurable spec is scored against the average of all the monitors we track: matching the class average scores 50, clearly beating it climbs towards 100, and each spec counts according to an editorial weight that reflects real-world impact — a battery-capacity gap moves the score far more than a colour-options list. The quality bars on the spec cards above show where this model sits inside the full range for its class, and the overall VS Score rolls every weighted result into one number.
Unknown values are never estimated. A spec this product doesn’t report simply drops out of its scoring — it isn’t penalised with a guess — but a thinner spec sheet does mean a score built on fewer data points, which is why completeness is disclosed under About this data.
Most importantly: a spec-sheet lead is not the same as a better product. Megapixels, gigahertz and benchmark points describe capacity, not experience — image processing, software optimisation, thermals, haptics and ergonomics decide how a device actually feels, and no table captures reliability or long-term support quality. Treat the VS Score as a structured summary of what can be measured, not a substitute for your own priorities.
About this data
- Specifications are compiled from each manufacturer’s official spec sheet, cross-checked against trusted specification databases, and normalised into one schema so identical things are compared identically.
- Specifications last verified July 25, 2026.
- Data completeness: 31 of the 41 specs in this category are verified (76%). Anything we could not verify is shown as Unknown — never estimated — and is excluded from the score.
- Prices and availability come from live retailer feeds via our shopping partners and refresh throughout the day; a missing price means no partner currently lists the product, not that it is discontinued.
- Want the full picture? Our editorial guidelines explain how we research products, weight the scores and stay independent.
- Spotted an error in a spec? Tell us and we will correct the sheet.
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The bottom line
The KOORUI S2741LM earns a VS Score of 55, a solid mid-pack result among the 70 monitors we compare here. It stands out for 607.58 nits more peak brightness, has local dimming and has USB-C. Just be aware of 56.37 Hz less refresh rate and 2.29" (5.81 cm) less screen size before you buy. Weigh those trade-offs against what matters most to you.
The VS Score is generated automatically from the weighted specifications above, measured against all other monitors in our database. Treat it as a shortlisting guide — not a substitute for your own priorities.
