iiyama G-MASTER 24.5″ Full HD Monitor
£144.14 inc VAT
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About This Item
- 320 Hz refresh rate for ultra-smooth gaming performance
- Fast IPS panel with 1920 x 1080 Full HD resolution
- 0.4 ms response time for minimal motion blur
- G-Sync Compatible and AMD FreeSync for tear-free gameplay
- 150 mm height-adjustable stand for ergonomic comfort
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iiyama G-MASTER GB2591HSU-B1 | 320Hz Gaming Monitor with G-Sync
The iiyama G-MASTER GB2591HSU-B1 is a high-performance gaming monitor designed for competitive players who demand ultra-smooth gameplay and rapid response times. With a 320Hz refresh rate and 0.4ms response time, this 24.5″ Fast IPS display delivers the speed and clarity needed to stay ahead in fast-paced games.
Specifications
| Metric | Spec. |
|---|---|
| Screen Size | 24.5″ |
| Resolution | 1920 x 1080 (Full HD) |
| Refresh Rate | 320Hz |
| Response Time | 0.4ms |
| Panel Type | Fast IPS |
Ultra-Fast 320Hz Refresh Rate for Competitive Gaming
The standout feature of this iiyama monitor is its 320Hz refresh rate, which provides exceptionally smooth motion rendering for competitive gaming. This high refresh rate, combined with NVIDIA G-SYNC compatibility and AMD FreeSync support, eliminates screen tearing and stuttering for fluid gameplay. The Fast IPS panel technology ensures you get both the speed of TN panels and the colour accuracy and viewing angles of IPS displays.
0.4ms Response Time Minimises Motion Blur
With a rapid 0.4ms response time (MPRT), this monitor virtually eliminates motion blur and ghosting during fast-paced action. Whether you’re tracking opponents in FPS games or following quick movements in racing titles, the ultra-fast response ensures crisp, clear visuals without the distracting trails that can cost you crucial milliseconds in competitive play.
Ergonomic Design for Extended Gaming Sessions
The GB2591HSU-B1 features a fully adjustable stand with 150mm height adjustment, -45° to 45° swivel, and 5° to 23° tilt capabilities. The monitor also supports pivot rotation up to 90°, allowing you to switch between landscape and portrait orientations. Cable management is integrated to keep your gaming setup tidy, and the VESA 100x100mm mounting pattern offers alternative mounting options.
HDR Support and Enhanced Visual Quality
This monitor supports High Dynamic Range 10 (HDR10), providing improved contrast and colour depth for supported content. The 350 cd/m² typical brightness and 1000:1 contrast ratio deliver vibrant, detailed images, while the 16.7 million colours ensure accurate colour reproduction. The matte display surface reduces reflections, making it suitable for various lighting conditions.
What is in the box
- Quick start guide
- Safety guide
- AC power cable (1.8m)
- USB cable (1.8m)
- DisplayPort cable (1.8m)
Check before you buy
- Confirm your graphics card supports 320Hz output at 1080p resolution
- Verify your gaming setup has space for a 24.5″ monitor with adjustable stand
- Check if you need HDMI 2.1 or DisplayPort 1.4 connectivity for maximum refresh rate
- Confirm the stand height adjustment meets your ergonomic requirements
Questions and answers
Does this monitor support both NVIDIA G-SYNC and AMD FreeSync?
What is the maximum resolution and refresh rate combination supported?
Are built-in speakers included with this monitor?
Can this monitor be wall-mounted?
Does the monitor include blue light reduction features?
The short version
The iiyama G-MASTER GB2591HSU-B1 is an excellent choice for competitive gamers who prioritise speed and responsiveness above all else. Its 320Hz refresh rate and 0.4ms response time make it particularly well-suited for esports titles where every millisecond counts. The Fast IPS panel provides a good balance of speed and image quality, while the comprehensive ergonomic adjustments ensure comfortable extended gaming sessions. Covered by the applicable manufacturer warranty.
| Weight | 8 kg |
|---|---|
| Packaging content | quick start guide, safety guide |
| Display brightness typical | 350 cd/m² |
| Screen shape | Flat |
| Display number of colours | 16.7 million colours |
| Native aspect ratio | 16:9 |
| Display surface | Matt |
| HD type | Full HD |
| Display technology | LED |
| Contrast ratio dynamic | 100000000:1 |
| Viewing angle horizontal | 178° |
| Viewing angle vertical | 178° |
| Pixel pitch | 0.2802 x 0.2802 mm |
| Horizontal scan range | 30 – 360 kHz |
| Viewable size horizontal | 54.4 cm |
| Viewable size vertical | 30.3 cm |
| Response time | 0.4 ms |
| Display diagonal | 62.2 cm (24.5″) |
| Contrast ratio typical | 1000:1 |
| High Dynamic Range HDR supported | Yes |
| Colour depth | 8 bit |
| High Dynamic Range HDR technology | High Dynamic Range 10 (HDR10) |
| Display diagonal metric | 62 cm |
| Response time MPRT | 0.4 ms |
| NVIDIA G-SYNC type | G-SYNC |
| AMD FreeSync | Yes |
| VESA Adaptive Sync support | Yes |
| Low Blue Light technology | Yes |
| Flicker-free technology | Yes |
| Number of speakers | 2 |
| Built-in speakers | Yes |
| RMS rated power | 8 W |
| AC input voltage | 100 – 240 V |
| AC input frequency | 50/60 Hz |
| Power consumption standby | 0.5 W |
| Power consumption typical | 30 W |
| Power consumption off | 0.3 W |
| Energy efficiency class SDR | E |
| Energy efficiency class HDR | G |
| Energy consumption SDR per 1000 hours | 18 kWh |
| Energy consumption HDR per 1000 hours | 31 kWh |
| Market positioning | Gaming |
| Built-in camera | No |
| Built-in USB hub | Yes |
| USB hub version | 3.2 Gen 1 (3.1 Gen 1) |
| Headphone out | Yes |
| HDMI ports quantity | 2 |
| DisplayPorts quantity | 1 |
| HDCP | Yes |
| DisplayPort version | 1.4 |
| Number of downstream ports | 4 |
| Product colour | Black |
| Wall mountable | Yes |
| VESA mounting | Yes |
| Cable lock slot | Yes |
| Panel mounting interface | 100 x 100 mm |
| Swivelling | Yes |
| Swivel angle range | -45 – 45° |
| Tilt angle range | 5 – 23° |
| Pivot | Yes |
| On Screen Display OSD | Yes |
| Pivot angle | 0 – 90° |
| On Screen Display OSD languages | Czech, German, English, French, Italian, Japanese, Dutch, Polish, Portuguese, Russian |
| Height adjustment | Yes |
| Cable lock slot type | Kensington |
| Cable management | Yes |
| Tilt adjustment | Yes |
| Adjustable height max | 15 cm |
| Width with stand | 557 mm |
| Depth with stand | 55.5 mm |
| Height with stand | 324 mm |
| Weight with stand | 5.3 kg |
| Package width | 630 mm |
| Package depth | 142 mm |
| Package height | 504 mm |
| Package weight | 8.03 kg |
| Cables included | AC, USB, DisplayPort |
| DisplayPort cable length | 1.8 m |
| USB cable length | 1.8 m |
| Sustainability certificates | ErP |
| User controls | picture adjust (contrast, brightness, overdrive, HDR, Adaptive Sync, night mode, blue light reducer, Motion Blur Reducer, gamma), input select (input source), audio adjust (volume, mute), store user setting (user modes), color settings (6-axis, color temperature, user preset, black tuner), image adjust (i-Style color, X-Res Technology, sharpness, HDMI range, direct drive mode, video mode adjust), language, setup menu (OSD horizontal position, OSD vertical position, OSD time, opening logo, power LED, DDC/CI control, usb charge), display information, reset (reset all) |
| Width | 557 mm |
| Weight | 5.3 kg |
| Height | 324 mm |
| Compliance certificates | CB, CE, EAC, PSE, REACH, RoHS, TÜV mark, VCCI, WEEE |
| Control panel | power switch, joystick, menu (center), up, signal select, down, shortcut, left, volume –, right, volume + |
| HDMI | Yes |
| Energy efficiency scale | A to G |
| Power supply type | Internal |
| Power cable length | 1.8 m |
| Package type | Box |
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