iiyama G-MASTER 24. 5″ Full HD Monitor

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.

Slim Specs Table

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.

Box contents

• 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

Frequently Asked Questions

Q: Does this monitor support both NVIDIA G-SYNC and AMD FreeSync?

A: Yes, the GB2591HSU-B1 supports both NVIDIA G-SYNC compatibility and AMD FreeSync for tear-free gaming with compatible graphics cards.

Q: What is the maximum resolution and refresh rate combination supported?

A: The monitor supports 1920×1080 resolution at up to 320Hz refresh rate via DisplayPort 1.4 or HDMI 2.1 connections.

Q: Are built-in speakers included with this monitor?

A: Yes, the monitor includes two built-in speakers with 8W RMS rated power for basic audio output.

Q: Can this monitor be wall-mounted?

A: Yes, the monitor is VESA mount compatible with a 100x100mm mounting pattern for wall or arm mounting.

Q: Does the monitor include blue light reduction features?

A: Yes, it includes Low Blue Light technology and Flicker-free technology to reduce eye strain during extended gaming sessions.

The Consultant’s verdict & warranty

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 standard Manufacturer Warranty.