
Samsung S27A850D
4.50COR Scoreout of 5 · 3 critic reviews
Monitors
Product specifications and review coverage for this exact model.

Image supplied through Icecat
MSI MAG401QR is listed in the computer monitors category. The recorded specifications include display diagonal: 101.6 cm (40"); display resolution: 3440 x 1440 pixels; panel type: IPS; maximum refresh rate: 155 Hz. This entry covers manufacturer code MAG401QR. Specifications relate to this exact source record; other editions or packages may differ.
Automatically assembled from the source specifications. This is a factual summary, not a hands-on review.
No scored critic reviews have been imported for this exact product yet. It remains unrated.
The COR Score gives each publisher one rating. Scores are converted to the same five-point scale.
Manufacturer code: MAG401QR. Icecat product 109491381 · Checked 19 Sep 2026. The source lists this code for Great Britain. No specifications are transferred from other editions.
The main features to compare for this exact model. Missing details are not assumed.
| Screen size | 101.6 cm (40") |
|---|---|
| Screen resolution | 3440 x 1440 pixels |
| Panel type | IPS |
| Maximum refresh rate | 155 Hz |
| High Dynamic Range (HDR) supported | Yes |
| HDMI ports | 2 |
| DisplayPort connections | 1 |
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| Built-in speakers | No |
|---|---|
| Headphone out | Yes |
| Headphone outputs | 1 |
| Touchscreen | No |
|---|---|
| Display brightness (peak) | 250 cd/m² |
| Anti-glare screen | Yes |
| Screen shape | Flat |
| Screen curvature rating | 1500R |
| Contrast ratio (typical) | 1000:1 |
| Contrast ratio (dynamic) | 100000000:1 |
| Viewing angle, horizontal | 178° |
| Viewing angle, vertical | 178° |
| Display number of colours | 1.07 billion colours |
| High Dynamic Range (HDR) technology | High Dynamic Range (HDR) 400 |
| Colour gamut standard | DCI-P3 |
| Colour gamut | 94% |
| Supported graphics resolutions | 3440 x 1440 |
|---|
| Supported video modes | 1440p |
|---|---|
| Built-in camera | No |
| Horizontal scan range | 30 - 160 kHz |
|---|---|
| Vertical scan range | 60 - 144 Hz |
| Built-in USB hub | Yes |
|---|---|
| USB hub version | 2.0 |
| USB upstream port type | USB Type-A, USB Type-B, USB Type-C |
| Number of USB Type-B upstream ports quantity | 1 |
| Number of USB Type-C upstream ports quantity | 1 |
| USB Type-A downstream ports quantity | 2 |
| HDMI | Yes |
| HDMI version | 2.0b |
| DisplayPort version | 1.4a |
| Panel mounting interface | 100 x 100 mm |
| Energy efficiency class (SDR) | F |
|---|---|
| Energy efficiency class (HDR) | G |
| Energy consumption (SDR) per 1000 hours | 39 kWh |
| Energy consumption (HDR) per 1000 hours | 66 kWh |
| Power consumption (standby) | 0.5 W |
| Power consumption (off) | 0.3 W |
| AC input voltage | 100 - 240 V |
| AC input frequency | 50/60 Hz |
| Power supply type | External |
| Energy efficiency scale | A to G |
| Product colour | Black |
|---|---|
| VESA mounting | Yes |
| Width (with stand) | 945.2 mm |
| Depth (with stand) | 530.3 mm |
| Height (with stand) | 289.6 mm |
| Weight (with stand) | 10.3 kg |
| Width (without stand) | 945.2 mm |
| Depth (without stand) | 416.1 mm |
| Height (without stand) | 83.3 mm |
| Weight (without stand) | 8 kg |
| HD type | UltraWide Quad HD |
|---|---|
| Native aspect ratio | 16:9 |
| Response time (MPRT) | 1 ms |
| Aspect ratio | 21:9 |
| Response time (fast) | 1 ms |
| Pixel pitch | 0.2697 x 0.2697 mm |
| Viewable size, horizontal | 92.6 cm |
| Viewable size, vertical | 38.8 cm |
| sRGB coverage (typical) | 118% |
| NVIDIA G-SYNC | No |
| AMD FreeSync | No |
| Market positioning | Gaming |
| Detachable stand | Yes |
| Cable lock slot | Yes |
| Cable lock slot type | Kensington |
| Tilt adjustment | Yes |
| Tilt angle range | -5 - 20° |
| Package width | 945.2 mm |
|---|---|
| Package depth | 289.6 mm |
| Package height | 530.3 mm |
| Package weight | 12.4 kg |
| Package type | Box |
Specifications describe the supplied product data, not measured review results. Battery life, range and performance figures are source claims and can vary with use.
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Make sense of the details
The 101.6 cm (40") display is specified at 3440 x 1440 pixels. Consider these together: a larger screen provides more physical space, while resolution determines the number of pixels available. Neither specification establishes brightness, colour accuracy or motion quality.
The listed maximum refresh rate is 155 Hz. To use it, the source device, cable, resolution and input must all support the intended mode. Refresh rate is separate from response time and input lag.
Compare the specification with your intended use and read the original reviews for performance, comfort, reliability and other qualities that a specification sheet cannot establish.
No scored critic reviews have been imported for this product yet. This means review coverage is missing; it does not mean the product received a poor review.
The COR Score is tbd. We publish a combined score only after at least three distinct critics have usable ratings. Any individual reviews already available remain visible.
This page identifies MSI MAG401QR using manufacturer code MAG401QR. Check that code, configuration and supplied accessories against the retailer listing. Related-version reviews are labelled separately and do not contribute to this version’s score.
The source specification records display diagonal as 101.6 cm (40"). This is a specification, not an independent performance measurement. Check the exact model and the original critic reviews for real-world results.
The source specification records display resolution as 3440 x 1440 pixels. This is a specification, not an independent performance measurement. Check the exact model and the original critic reviews for real-world results.
Use the retailer-offer section on this page for available matched offers. If no offer is shown, we do not currently have a verified price. Confirm model, stock, delivery and the final total at the retailer; coverage does not include every seller.
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