
iiyama C1911S-3
tbdCOR ScoreAvailable after 3 critic reviews
Monitors
Product specifications and review coverage for this exact model.

Image supplied through Icecat
iiyama GB2741QSU-B1 is listed in the computer monitors category. The recorded specifications include display diagonal: 68.6 cm (27"); display resolution: 2560 x 1440 pixels; panel type: IPS; maximum refresh rate: 144 Hz. This entry covers manufacturer code GB2741QSU-B1. 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: GB2741QSU-B1. Icecat product 135276489 · Checked 24 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 | 68.6 cm (27") |
|---|---|
| Screen resolution | 2560 x 1440 pixels |
| Panel type | IPS |
| Maximum refresh rate | 144 Hz |
| Response time | 1 ms |
| Display brightness (typical) | 350 cd/m² |
| HDMI ports | 1 |
| DisplayPort connections | 1 |
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| Number of speakers | 2 |
|---|---|
| Rated audio power (RMS) | 4 W |
| Built-in speakers | Yes |
| Headphone out | Yes |
| Display technology | LED |
|---|---|
| Display surface | Matt |
| Screen shape | Flat |
| Contrast ratio (typical) | 1500:1 |
| Contrast ratio (dynamic) | 80000000:1 |
| Viewing angle, horizontal | 178° |
| Viewing angle, vertical | 178° |
| Display number of colours | 16.7 million colours |
| Display diagonal (metric) | 68.6 cm |
| On Screen Display (OSD) languages | Czech, German, English, Spanish, French, Italian, Japanese, Dutch, Polish, Russian, Ukrainian |
| Native refresh rate | 60 Hz |
| Horizontal scan range | 30 - 212 kHz |
|---|
| Built-in USB hub | Yes |
|---|---|
| USB hub version | 2.0 |
| Number of downstream ports | 2 |
| HDMI | Yes |
| HDMI version | 2.0 |
| DisplayPort version | 1.4 |
| Panel mounting interface | 100 x 100 mm |
| USB cable length | 1.5 m |
| HDMI cable length | 1.5 m |
| Energy efficiency class (SDR) | D |
|---|---|
| Energy efficiency class (HDR) | Not available |
| Energy consumption (SDR) per 1000 hours | 17.1 kWh |
| Power consumption (typical) | 17 W |
| 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 | Internal |
| Energy efficiency scale | A to G |
| User controls | picture adjust (contrast, brightness, OD, Adaptive Sync, Adv. Contrast, Night Mode, Motion Blur Reduction, Gamma), input select (Auto/Manual, HDMI, DP), audio settings (volume, mute audio), store user settings (user modes), colour settings (6-Axis, colour temperature, user preset, i-style colour, blue light reducer, black tuner), image adjust (sharpness, RGB range, video mode adjust, x-res technology), language, setup menu (OSD h. position, OSD v. position, OSD time, OSD background, OSD rotate, |
|---|---|
| Control panel | Joystick / Power Button: Power / Menu (Center), Up / Input Select, Down, Right / Volume / Mute Audio, Left / Brightness / Adaptive Sync / Night Mode / Motion Blur Reduction / i-Style Colour / ECO |
| Product colour | Black |
|---|---|
| VESA mounting | Yes |
| Height adjustment | Yes |
| Adjustable height (max) | 15 cm |
| Width (with stand) | 613 mm |
| Depth (with stand) | 214 mm |
| Height (with stand) | 553 mm |
| Weight (with stand) | 5.4 kg |
| Height (without stand) | 403 mm |
| Power cable length | 1.5 m |
| Weight | 5.4 kg |
| Width | 613 mm |
| Depth | 214 mm |
| Compliance certificates | CE, EAC, PSE, REACH, RoHS, TÜV mark, UKCA, VCCI, WEEE |
|---|
| HD type | 4K Ultra HD |
|---|---|
| Native aspect ratio | 16:9 |
| Response time (MPRT) | 1 ms |
| Pixel pitch | 0.233 x 0.233 mm |
| Viewable size, horizontal | 59.7 cm |
| Viewable size, vertical | 33.6 cm |
| DDC/CI | Yes |
| NVIDIA G-SYNC | Yes |
| NVIDIA G-SYNC type | G-SYNC |
| AMD FreeSync | Yes |
| VESA Adaptive Sync support | Yes |
| Flicker-free technology | Yes |
| Low Blue Light technology | Yes |
| Market positioning | Gaming |
| HDCP | Yes |
| Cable management | Yes |
| Cable lock slot | Yes |
| Cable lock slot type | Kensington |
| Pivot | Yes |
| Swivelling | Yes |
| Swivel angle range | -45 - 45° |
| Tilt adjustment | Yes |
| Sustainability certificates | ErP |
| Package width | 691 mm |
|---|---|
| Package depth | 142 mm |
| Package height | 442 mm |
| Package weight | 7 kg |
| Cables included | AC, USB, HDMI |
| Packaging content | quick start guide, safety guide |
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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