Compare KOORUI S2721PM vs KOORUI S2741LM

There is no USB-C charging or power delivery, so it cannot charge a connected laptop.

90W USB-C charging and video simplify laptop connections, though very power-hungry laptops may still drain battery.

Switching between HDR and SDR can trigger brightness, color, and local dimming quirks that sometimes need resetting.

Windows-side HDR toggling can simplify switching, and one owner successfully kept the screen in HDR using brightness utilities.

Video connections cover basic PC and console use, but older HDMI, no USB connections, and few office extras hold back its versatility.

The mix of HDMI 2.1, DisplayPort, USB-C, USB-A and audio output covers gaming PCs, consoles and laptops well.

The panel can become noticeably warm when local dimming is unexpectedly disabled, raising concern during bright prolonged use.

One owner found the monitor noticeably cooler than their other 4K displays at similar brightness settings.

No firmware version is exposed and there is no practical user firmware-update path, making future bug fixes uncertain.

Firmware updates are possible, but publicly available update packages were not readily found on the manufacturer site.

There is no USB hub, which is inconvenient for keyboards, peripherals, and laptop-based workflows.

Two downstream ports provide useful peripheral connectivity, though their speed and limited count earned differing assessments.

Brightness variation across the panel is very low in detailed testing, and the corners show little distracting falloff.

Testing found generally even lighting, but another owner noticed edge darkening and some scene-dependent color shifts.

Side views stay comparatively consistent, useful when other people watch or play nearby. A heavy anti-glare coating may still affect some viewing angles.

Typical IPS breadth is compromised by off-axis glow and brightness shifts, especially with local dimming in darker scenes.

The matte finish reduces visible glare well in daylight, although one detailed hands-on test and an owner found its texture or reflection behavior less refined than ideal.

A light matte coating suppresses bright reflections while preserving clarity, helping in lamp-lit rooms.

The stand has a space-saving base, though the external power brick adds some clutter to the desk area.

The compact stand base leaves useful desk space for a keyboard, mouse and small riser instead of dominating the desktop.

A 100×100mm mount is supported, but one test found standard 10mm screws too short; 12mm M4 screws may be needed.

The easily removed stock stand exposes standard 100×100mm VESA points for a monitor arm.

There are no built-in speakers, so external audio is necessary.

There are no integrated speakers; anyone relying on monitor audio will need headphones or external speakers.

Simple packaging uses sturdy, dense foam to protect the screen during shipping.

The box presentation and included cable kit made an unusually good first impression.

HDR Auto is the preferred choice; Movie and Game HDR modes can lift blacks and damage contrast. SDR presets also need careful color selection.

There is a useful choice of game and image modes, though the best contrast and HDR results often require some experimenting.

Moving objects show relatively little trailing, and the strobing mode produces minimal double images when configured well.

Motion is generally clean at 160Hz, though inverse overshoot at lower refresh rates and smearing at 320Hz remain drawbacks.

Wake is somewhat slow and may flash odd colors; one reported dimming configuration also failed to reapply after a long sleep.

One test found laptop wake reliably handled, while an owner complained that the backlight remained lit in standby.

The monitor supports PS5 at 1440p/120Hz with VRR in hands-on testing, but HDMI 2.0 prevents 4K/120Hz and limits some Switch 2 HDR combinations. It is more straightforward for PC gaming.

HDMI 2.1 and 4K/120Hz support make current consoles easy to use; occasional 60Hz dimming flicker remains a caveat.

DisplayPort unlocks QHD at 200Hz, while fast response and HDR produce a strong PC gaming experience once settings are tuned.

PC gameplay benefits from bright 4K and a high-speed alternative, but more responsive OLED models remain attractive for competitive-only buyers.

VRR flicker is generally minimal and is mainly a risk during unusual very-low-frame-rate swings.

Controlled testing reported no visible VRR-induced flicker, even though separate 60Hz local-dimming flicker can occur.

Text generally looks crisp from a normal desk distance and is comfortable for office tasks. Higher-resolution 4K models still show finer detail.

The dense 4K panel makes fine detail and text notably sharper than standard 27-inch 1440p alternatives.

Fast IPS response and effective strobing keep motion relatively clean, making gameplay smoother than slower alternatives. The DIC mode is especially effective at reducing blur.

At 160Hz motion is generally crisp; the 320Hz mode can smear and its strobing option adds clarity at the cost of extra setup.

Response times and strobing make fast play credible, but the screen is not the best choice for the most demanding esports competitors seeking 240Hz or higher.

The 1080p/320Hz mode makes fast multiplayer enjoyable, but softer detail and residual smearing mean speed does not equal perfect clarity.

Response is good for an IPS gaming display and competes well with similarly priced monitors. Tuning matters because the most aggressive overdrive setting overshoots.

Good 160Hz pixel response keeps blur reasonably low, but transitions cannot fully keep pace with 320Hz and overshoot rises in aggressive modes.

The 2560×1440 panel gives sharp enough text for ordinary desktop work and a good gaming-detail balance on 27 inches. A 4K alternative remains noticeably sharper for text.

Sharp native 4K gives more detail to games and desktop text; choosing 1080p for 320Hz deliberately trades away that crispness.

Mini LED dimming can make night scenes noticeably darker than ordinary IPS, but deep blacks and small highlight control still lag stronger VA screens.

Local dimming gives darker blacks than ordinary IPS, though KOORUI sometimes prioritizes brightness over the deepest possible blacks.

RPGs and visually detailed solo games benefit enormously from luminous highlights, wide color, and strong HDR contrast.

Native 4K and forceful HDR brightness make detailed single-player games a strength; the 160Hz setting is generally favored over low-detail 320Hz for cinematic play.

Halos can form around subtitles, cursors, and bright objects on black backgrounds. Some viewers find them mild, but they are more obvious in dark scenes.

Halos are relatively modest from directly ahead but become noticeable off-axis or around small bright shapes on dark backgrounds.

The fast IPS panel offers steady off-axis color and good motion response, with weaker native blacks than VA rivals.

The IPS LCD uses a conventional RGB stripe for clear text and avoids OLED burn-in, though native blacks and off-axis glow remain IPS-like.

The 200Hz headline is a meaningful upgrade over 60Hz and slightly faster than some close competitors. Some owners drop to 144Hz to avoid visible scanline artifacts in certain modes.

Native 160Hz feels fast for 4K gaming, while the 320Hz option offers extra speed at the expense of resolution.

The stand secures firmly during assembly and is a practical base for everyday use.

A substantial base keeps the screen fairly steady with little wobble, and the construction feels better than its price suggests.

Stock differs sharply by region: some sellers have had ample inventory or discounts, while other buyers report no local listings or sell-outs.

A discussion reported stock disappearing unexpectedly, so finding the model has not always been straightforward.

Adaptive refresh works over DisplayPort and HDMI, including PS5 VRR in direct testing. Other sources caution against assuming every console output mode is supported.

Support spans common variable-refresh formats and the full gaming modes; certification status and detailed behavior vary.

A cable pass-through in the stand helps keep basic video and power leads tidy.

A stand channel and rear connection cover can hide cabling neatly, although the cover and narrow exit space can be fiddly.

Quantum-dot color coverage is unusually wide for the price, extending through DCI-P3 and Adobe RGB. Wide gamut is not a substitute for accurate calibration.

Wide Adobe RGB and DCI-P3 support adds reach for photography and makes media colors vivid, although correct profiling still matters.

Height, tilt, swivel, and pivot adjustments are unusually comprehensive for a budget gaming display. Movement is reported as smooth and convenient.

Height, tilt, swivel and portrait rotation are smooth and extensive, making long desktop sessions easier to position.

The display earns strong marks for its surprising performance at a budget price, especially once HDR and color are configured. Buyers nevertheless report software quirks that can undermine an otherwise impressive panel.

Users and testers largely admire the bright 4K image and flexible refresh options, while noting local-dimming and color setup quirks.

The Fast setting brings response times under control without excessive artifacts; the very fastest setting introduces significant overshoot.

Fast is the safest general-purpose choice; Fastest can add distracting bright and dark overshoot, especially as refresh rates change.

Input response is extremely quick at gaming refresh rates, with no appreciable delay expected for most players.

Measured input lag is low even at 60Hz, and gaming controls feel responsive across refresh settings.

The missing KVM switch prevents easy keyboard-and-mouse sharing between computers.

A built-in KVM makes it practical to share peripherals across connected computers, with reliable Mac/Windows operation reported.

Mini LED dimming significantly improves apparent HDR contrast over ordinary IPS screens, but native IPS contrast is modest and VA competitors render darker blacks.

With local dimming enabled, contrast becomes far stronger than ordinary IPS and the scene looks punchier. Disabling dimming returns it to typical IPS contrast.

Shadow enhancement offers some useful adjustment, but stronger settings wash out the screen instead of selectively brightening dark areas.

The shadow-boost control can reveal darker content, although raising it too far washes out blacks; a slight negative SDR adjustment can improve perceived contrast.

The 1,152-zone system strengthens HDR depth at a remarkably low price, yet halos, small-object dimming, and occasional mode-reset behavior leave it short of premium implementations.

High-zone-count backlighting creates strong HDR contrast but can dim small highlights and low-contrast desktop text.

The joystick-driven OSD is fast and intuitively organized, though options are limited and some owners dislike how changing modes affects their image.

The joystick is intuitive once located, but buried options, repeated navigation and an easily hit mode button add friction.

Both SDR and HDR are notably bright, with vivid highlights that can dominate a scene. The minimum brightness may be too high for sensitive night-time users, and some owners find bright white transitions uncomfortable.

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.

Bright highlights and localized backlighting make HDR the clear highlight of this monitor, provided the Auto HDR mode is used. Haloing and inaccurate alternative presets remain compromises.

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.

The panel can produce excellent HDR color, brightness, and contrast for the money. SDR out of the box looks less polished and may require work.

Richly saturated images and outstanding large-scene brightness make it striking, but aggressive dimming is not ideal for every scene.

Variable refresh is supported over both major video connections and helps avoid tearing across a broad gaming frame-rate range.

VRR works across the refresh range without the obvious flicker sometimes seen on competing panels.

Factory settings and several color modes can look too cool, warm, or saturated depending on configuration. Manual calibration improves results, but critical color work needs care.

Well-configured gamut modes and profiling can look excellent; native colors may be oversaturated and HDR tones sometimes shift red.

PIP and PBP are described as useful for displaying more than one input, although other reviewers focus on limited USB-based productivity features.

PiP and PbP let two video sources share the screen, adding welcome flexibility for multi-device desks.

HDMI 2.0 is the major connection compromise: it cannot drive the panel at its 200Hz maximum or provide 4K/120Hz console output. A separate hands-on test did confirm PS5 VRR at supported lower resolutions.

Two full-bandwidth HDMI 2.1 inputs help the panel handle modern console resolutions and high refresh rates.

Mini LED HDR, a fast QHD screen, and wide color coverage deliver unusually strong value at discounted prices. The appeal is less clear when pricing rises toward more fully equipped rivals.

This 4K/320Hz Mini LED feature set earns strong value praise at competitive prices; OLED and other Mini LED discounts can change the calculation.

Mechanical assembly is straightforward and requires no screwdriver. Display color calibration, however, can be considerably more complicated.

The included stand assembles quickly and is easy to position without extra tools or hassle.

The body uses budget plastic but fits together neatly, and owner feedback on construction is generally positive.

The monitor feels reassuringly solid for its price, with a stable metal-based stand and little creaking or wobble.

The understated, narrow-bezel design looks cleaner than a typical inexpensive gaming monitor, without flashy lighting.

The dark, restrained chassis works in a home office or gaming room, while the optional rear LED ring supplies understated flair.

Flicker-free backlighting is a useful advantage for sensitive viewers, though minimum screen brightness can be uncomfortable in a dark room.

Eye-care and e-book modes are available, but their appeal is limited by the lack of a meaningful dedicated low-blue-light preset in other testing.

Manual RGB and color-mode adjustments can substantially improve grayscale accuracy, but configuring SDR and HDR separately can take patience.

Color presets clamp the wide gamut effectively, but the restricted RGB, gamma and temperature settings can frustrate fine tuning.

Everyday operation is straightforward with a responsive joystick, but manually switching dimming modes and managing color calibration can feel tedious.

Individual tested units show little noticeable corner glow or bleed, though the appearance changes when local dimming is off.

DIC can make moving objects clearer with little crosstalk, but it requires VRR off and resets brightness and overdrive settings.

The rear RGB ring adds a clean accent without overpowering the setup, and it can be switched off for an understated look.

An LCD Mini LED panel avoids the burn-in anxiety associated with static work on OLED displays.

Careful calibration can deliver excellent measured accuracy, even though the provided factory workflow and missing ICC profile make setup less convenient.

The main owner received a panel without visible dead pixels or backlight bleed, although other units in the discussion showed defects.

A printed sRGB calibration report is supplied, but one tester found that its claim did not match perceptually accurate color.

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.

Very narrow bezel gaps are less likely to collect dust than the wider seams on some competing displays.

KOORUI’s DIC black-frame insertion produces excellent motion clarity with surprisingly usable brightness. It does require disabling VRR and local dimming.

The large external power brick is an inconvenience, although its long cable and relatively cool-running screen soften the drawback.

FPS counters, game modes, a shadow boost and strobing provide useful gaming extras beyond basic refresh settings.

The 320Hz mode reduces resolution, but reaching something close to 320fps still depends heavily on the game and graphics hardware.

Strong peak brightness does not extend to the smallest HDR highlights, which can be substantially dimmed to prevent blooming.

The Game preset generally beats the Movie preset by showing more shadow detail and brighter scenes; the alternative can crush dark tones.

The 3.5mm audio output offers a handy way to route sound through the display and simplify desk cabling.

The 1080p/320Hz image is playable rather than perfectly pixel-mapped; gradient and fine-detail artifacts appear more noticeable in slower games.

Supplied video and connection cables make it easier to set up without buying separate leads.

Factory calibration is undermined by the lack of downloadable ICC/ICM profiles; owners can get good results by profiling the display themselves.

The power adapter is external rather than integrated, adding a brick and another cable to manage.

A faint zone flicker can appear around moving details at 60Hz, with some owners finding it intrusive during console gaming.

A Mac and Windows test found reliable KVM switching and wake handling, making the monitor viable for Apple-based desks.

A broad Adobe RGB gamut and strong calibrated results suit photography, including HDR image work, but factory profiles are absent.

At 27 inches, 4K provides finely rendered text and detailed games, a noticeable improvement over more common 1440p screens.

The monitor reliably recognizes connected computers after sleep, typically taking several seconds to display their picture.

Power draw can be high at maximum brightness while charging a laptop, although everyday brightness settings reduce consumption substantially.

Careful bezel assembly helps it avoid looking cheap, but its all-plastic chassis is not particularly luxurious.

The monitor works well for everyday office tasks thanks to its clear text and adjustable stand, but the lack of USB and KVM functionality limits all-in-one workstation convenience.

The panel supports the 4K/120Hz signal expected from PS5, and reviewers report good console compatibility overall.

Fine horizontal line patterns can appear on saturated static colors, especially near 180Hz. Owners report improvement at 144Hz and sometimes 200Hz, but the defect can be a deal-breaker.

The coating controls reflections, but its relatively aggressive texture can be noticeable up close and may affect off-angle clarity.

Dark detail varies by preset: the Game HDR mode and gentle shadow tweaks reveal more, while Movie and some gamut modes crush blacks.

Rear-facing ports are awkward to reach, and the cable cover creates a tight space for connecting leads.

4K/120Hz console content works, but 4K/24Hz input is not supported, which may matter for some film sources.

At 60Hz, local dimming can flicker around moving elements, making frame-rate-limited console games less dependable than high-refresh play.

HDR brightness remains adjustable, but missing color and black-equalizer controls can make shadow and highlight tuning frustrating.

HDR EOTF tracking is mostly consistent but somewhat too bright in darker content, limiting strict accuracy.

Generic display drivers work, but absent dedicated tools complicate calibration, settings recovery, and troubleshooting.

There is no official Windows OSD control software, leaving owners to use hardware controls or third-party alternatives.

The display can gently reduce brightness on extended bright screens, which one owner finds easier on the eyes.

Tight-fitting bezel seams leave fewer dust-catching gaps than some competing designs.

Bright saturated colors have impressive punch in games and HDR scenes, giving even muted scenery surprising vibrancy.

Switching modes is simple with a dedicated button, but toggling while a game is already running has caused a PC freeze.

DisplayPort 1.4 is the connection to use for the full 200Hz PC experience. HDMI is limited to a lower refresh rate.

KOORUI’s own specifications conflict about USB, display brightness terminology, and warranty duration; buyers should verify seller terms.

No coil whine was audible from either the screen or power brick in a quiet workspace.

Default gamma is close to target and can bring out dark tones, while some alternative color modes lose near-black detail.

90W USB-C power is sufficient for many laptops, but some high-end systems can draw more and slowly discharge under load.

PC use was reported as stable, with no black-screen or reset issues during testing.

An owner in the discussion reported losing half the backlight within a week, while others have had satisfactory use. Long-term dependability remains uncertain.

Warranty terms may vary by region and are not entirely consistent between printed claims and retailer pages; buyers should confirm local coverage.

The backlight was measured as flicker-free without PWM, including when local dimming was active.

Slim bezels look modern, but one owner noticed brightness falling away at the screen edges.

The 27-inch screen is seen as a useful sweet spot for detailed QHD games and ordinary desk work.