iiyama G-Master GB2771UHSU-B1 27" 144Hz 0.8ms 4K Ultra HD Gaming Monitor
SKU: GB2771UHSU-B1
£200.00 (Excl. VAT)
£200.00 (Excl. VAT)
Unleash your full gaming potential with the versatile 4K GB2771UHSU Red Eagle
Experience the best of both worlds with the G-MASTER Red Eagle GB2771UHSU 27” 4K IPS monitor built for versatility. Enjoy high-definition detail with 4K resolution at 144Hz for smooth and immersive single-player adventures, then switch to an ultra-responsive 288Hz refresh rate at Full HD when it’s time to get competitive. With a fast 0.8ms MPRT (4K 144Hz) response time and NVIDIA G-SYNC Compatible technology, gameplay stays crisp and fluid, with no visible screen tearing artifacts or distractions.
This monitor delivers 450cd/m² brightness and vibrant colour accuracy with it’s IPS panel, making it a suitable monitor for gaming and content creation, it is the perfect all-rounder you need for both immersive and competitive gaming.
4K clarity for next-level immersion
Ultra HD resolution delivers crystal-clear visuals and stunning detail, bringing your games to life with incredible sharpness and realism. Whether you're exploring open worlds or battling online!

Dual Refresh Rate
Switch effortlessly between 4K at 144Hz for stunning, immersive visuals and FHD at 288Hz for ultra-fast, competitive gameplay. Whether you’re exploring vast worlds or chasing every millisecond, the choice is yours.

NVIDIA G-SYNC Compatible
Unlock tear-free, ultra-smooth gameplay with NVIDIA G-SYNC, syncing your monitor to your GPU for fluid motion, reduced stutter, and crystal-clear action. (DisplayPort Only)

HDMI 2.1
Play smoother games than ever before. HDMI 2.1 supports a range of higher video resolutions and refresh rates. The increased bandwidth allows dynamic HDR with 4K120 and future HDR standards, resulting in a more fluid and detailed gaming experience.
| Design | 4-side slim bezel | Diagonal | 27", 68.6cm |
| Panel | IPS | Native resolution | 3840 x 2160 @144Hz |
| Dual mode | 1920 x 1080 @288Hz | Aspect ratio | 16:9 |
| Panel brightness | 450 cd/m² | Static contrast | 1500:1 |
| Advanced contrast | 100M:1 | Response time (MPRT) | 0.8ms (min.) |
| Viewing zone | horizontal/vertical: 178°/178°, right/left: 89°/89°, up/down: 89°/89° | Colour support | 1.07B 8bit+FRC |
| Horizontal Sync | 30 - 360kHz | Viewable area (W x H) | 596.7 x 335.7mm, 23.4 x 13.2" |
| Pixel pitch | 0.155mm | Colour | matte, black |
| Signal input | HDMI x2 (v.2.1, max. 3840 x 2160 @144Hz, 1920x1080 @288Hz) | DisplayPort | x1 (v.1.4 DSC, max. 3840 x 2160 @144Hz, 1920x1080 @288Hz) |
| USB HUB | x4 (x2 v3.2 Gen 1 (5Gbps, 4.5W, Type-A), x2 v3.2 Gen 1 (5Gbps, 7.5W, Type-C)) | HDCP | Yes |
| Headphone connector | Yes | Blue light reducer | Yes |
| Flicker free | Yes | Adaptive Sync support | AMD FreeSync Premium / NVIDIA G-SYNC Compatible |
| Extra | i-Style Colour | HDR | HDR400 |
| OSD languages | EN, DE, FR, ES, IT, RU, JP, CZ, NL, PL, UA | Control buttons | Joystick, power/menu (center), up/signal select, down, left/i-Style colour, night mode, blue light reducer, right/volume |
| Speakers | 2 x 2W | Convenience | Kensington-lock™ prepared, DDC/CI |
| Display adjustments | height, swivel, tilt, pivot (rotation both sides) | Height adjustment | 150mm |
| Rotation (PIVOT) | 90° | Swivel stand | 90°; 45° left; 45° right |
| Tilt angle | 23° up; 5° down | VESA mounting | 100 x 100mm |
| Cable management | Yes | Cables included | Power (1.85m), USB (1.5m), HDMI (1.85m), DP (1.85m) |
| Other accessories | Quick start guide, safety guide | Power supply unit | Internal |
| Power supply | AC 100 - 240V, 50/60Hz | Power usage | 26W typical, 0.5W standby, 0.3W off mode |
| Regulations | CE, TÜV-Bauart, EAC, PSE, RoHS, ErP, WEEE, VCCI, REACH, UKCA | Energy efficiency class | F (EU 2017/1369) |
| REACH SVHC | above 0.1%: Lead | Product dimensions (W x H x D) | 614.5 x 417 (567) x 213mm |
| Box dimensions (W x H x D) | 694 x 440 x 143mm | Weight (without box) | 5.97kg |
| Weight (without stand) | 4kg | Weight (with box) | 9kg |
| EAN code | 4948570127139 |
| Description | Downloads |
|---|---|
| User Manual | Download |
| Technical Specification | Download |
| EU Energy Label | Download |
| UK Energy Label | Download |
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