42 facts in comparison
MSI MPG 321URX QD-OLED vs KOORUI S2741LM
A 32-inch 4K OLED against a 27-inch 4K Mini-LED IPS, and the interesting row is brightness — where the cheaper LCD actually wins.
That is the OLED trade in one line. It gives you per-pixel black and near-instant response; the Mini-LED gives you more raw brightness in a lit room and no burn-in to think about. Size and pixel density pull in opposite directions too, so measure the desk before reading the scores.
Where the MSI MPG 321URX QD-OLED beats the KOORUI S2741LM
- A bigger screen ?31.5" (80.01 cm) vs 27" (68.58 cm)
- OLED Panel type ?OLED vs IPS
- A much higher refresh rate ?240 Hz vs 160 Hz
- A much faster response time ?0.03 ms vs 1 ms
- Slightly wider DCI-P3 colour coverage ?99 % vs 98 %
- True Black 400 HDR ?True Black 400 vs DisplayHDR 1000
- G-Sync Compatible Adaptive sync ?G-Sync Compatible vs FreeSync
Where the KOORUI S2741LM beats the MSI MPG 321URX QD-OLED
- Higher peak brightness ?1,400 nits vs 1,000 nits
- A higher pixel density ?163 ppi vs 140 ppi
- Has local dimming ?
Key real-world differences
The spec sheet pulls in both directions. These are the gaps big enough to shape the decision — with the actual figures, and what each one means in real-world use.
- Response timePicture0.03 ms vs 1 ms — 97% less for the MSI MPG 321URX QD-OLED
Grey-to-grey response; lower reduces motion blur.
- Local dimmingPictureNo vs Yes — only the KOORUI S2741LM has it
Dims parts of the backlight independently to improve contrast.
- Adaptive syncGamingG-Sync Compatible vs FreeSync — advantage MSI MPG 321URX QD-OLED
Variable-refresh technology for tear-free motion.
Which one should you buy?
There is no single answer — it depends on what you will actually use it for. Match your priority to the pick below.
- Best for picture MSI MPG 321URX QD-OLED takes the category 81 to 41 — driven by response time (0.03 ms vs 1 ms).
- Best for gaming MSI MPG 321URX QD-OLED takes the category 100 to 45 — driven by adaptive sync (G-Sync Compatible vs FreeSync).
- Best for features MSI MPG 321URX QD-OLED takes the category 100 to 0.
- The safe all-rounder MSI MPG 321URX QD-OLED wins more of the categories that carry real weight, topping the overall VS Score at 88.
Where each one falls short
MSI MPG 321URX QD-OLED
- Local dimming: No vs Yes
- Peak brightness: 1,000 nits vs 1,400 nits
- Pixel density: 140 ppi vs 163 ppi
- 4 specs are unreported (shown as Unknown) and excluded from its scores.
KOORUI S2741LM
- Response time: 0.03 ms vs 1 ms
- Refresh rate: 240 Hz vs 160 Hz
- Adaptive sync: G-Sync Compatible vs FreeSync
- 11 specs are unreported (shown as Unknown) and excluded from its scores.
What matters to you?
Drag the sliders to weight each category and re-rank the products to suit your priorities.
Score breakdown
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.
Full sRGB coverage keeps everyday content and photos colour-accurate.
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.
Specs last verified August 2, 2026MSI MPG 321URX QD-OLED: 38 of 42 specs verified (90%)KOORUI S2741LM: 31 of 42 specs verified (74%)Unverified specs show as Unknown — never estimated, never scored
What reviewers say
The bottom line
The MSI MPG 321URX QD-OLED is the clear winner, scoring 88 to 56 on our VS Score. It leads on Picture, Gaming and Features.
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