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iiyama 24.5" LED - G-Master GB2591HSU-B1 Gold Phoenix
Full HD 1080p PC monitor - 1920 x 1080 pixels - 0.4 ms - 16:9 - Fast IPS - HDR10 - 320 Hz - Adaptive-Sync/G-SYNC Compatible - HDMI/DisplayPort - Pivot - Black
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Gaming comfort and smooth display
The iiyama G-Master GB2591HSU-B1 monitor is a 25" FHD (1920×1080) gaming screen designed for competitive gamers who want extreme responsiveness and maximum fluidity. With a 320 Hz refresh rate and an ultra-fast response time of 0.4 ms, every movement is displayed with incredible precision to keep you ahead in fast-paced games.
Performance and smoothness for gaming
This iiyama monitor stands out above all for its ultra-high refresh rate of 320 Hz, well above the current standard, which guarantees exceptional image fluidity during intense gaming sessions
.
Combined with a response time of just 0.4 ms, it minimises motion blur and visual artefacts, giving you remarkable clarity to follow the fastest action on screen.
Optimised visual comfort
The 25" Fast IPS panel delivers a sharp, well-defined image with Full HD 1920×1080 resolution, enough to take full advantage of high frame rates without overloading the graphics card. Wide viewing angles ensure good readability even when viewed from off-centre, while anti-glare treatment improves visual comfort in varying lighting conditions.
The monitor also incorporates ergonomic technologies such as a height-adjustable stand (150 mm) to easily find the most comfortable position without fatigue, which is particularly appreciated during long gaming sessions.
Key features:
- 25-inch screen with Full HD resolution
- Fast IPS panel: wide viewing angles and ultra-fast response time of 0.4 ms
- Rich colours thanks to a dynamic contrast ratio of 80,000,000:1 (typical 1000:1)
- Ultra-smooth display with a maximum frequency of 320 Hz (240 Hz via HDMI)
- Tear-free display with Adaptive-Sync/G-SYNC Compatible technology
- Pre-set game modes or customisable profiles
- Black Tuner function: optimised dark scenes so you're never caught off guard by the enemy
- Connectors: 2x HDMI 2.1 and DisplayPort 1.4
- Built-in speakers + headphone jack
- Adjustable position: tilt, height (150 mm), pivot
- Eye comfort: Flicker Free + blue light reduction
Select your criteria
General information |
Product name |
iiyama 24.5" LED - G-Master GB2591HSU-B1 Gold Phoenix |
Brand |
iiyama | |
Model |
GB2591HSU-B1 | |
Display |
Screen size |
24.5 inches |
Screen format |
16:9 | |
Panel type |
IPS display | |
Max resolution |
1920 x 1080 pixels | |
High definition |
Full HD 1080p | |
Dot Pitch |
0.2802 mm | |
Brightness |
350 cd/m² | |
Contrast |
1000 /1 | |
Response time |
0.4 ms | |
Angle of vision (horizontal) |
178 Degree(s) | |
Angle of vision (vertical) |
178 Degree(s) | |
Matte/anti-glare panel |
Yes | |
HDR (High Dynamique Range) |
Yes | |
HDR standards |
HDR10 | |
NVIDIA G-SYNC |
Yes | |
G-SYNC |
G-SYNC compatible | |
NVIDIA Reflex |
No | |
Adaptive-Sync |
Yes | |
AMD FreeSync |
No | |
Flicker-Free |
Yes | |
Anti blue light |
Yes | |
Screen |
Screen type |
LED |
Range |
IIyama G-Master | |
Widescreen |
Yes | |
Curved screen |
No | |
Borderless |
Yes | |
Touch screen |
No | |
Min vertical frequency |
48 Hz | |
Max vertical frequency |
240 Hz | |
Type of activities |
Gamer | |
Ergonomics |
Portable |
No |
Pivot |
Yes | |
Height adjustable stand |
Yes | |
Removable stand |
Yes | |
VESA mount |
100 x 100mm | |
Back tilt angle (top) |
23 Degree(s) | |
Forward tilt angle (bottom) |
5 Degree(s) | |
Articulating arm |
No | |
Connectivity |
Video inputs |
2 X HDMI Female |
| 1 X DisplayPort Female | ||
HDMI standard |
HDMI 2.1 | |
DisplayPort standard |
DisplayPort 1.4 | |
Audio outputs |
1 X Headphone (3.5mm Jack Female) | |
Additional connector(s) |
2 X USB 3.0 | |
Dock USB-C |
No | |
Multimedia |
Built-in speakers |
Yes |
Sound power |
2 X 4 W | |
Webcam |
No | |
TV tuner |
No | |
Physical characteristics |
Color |
Black |
Release year |
2025 | |
Width |
557.5 mm | |
Height |
324 mm | |
Depth |
256 mm | |
Height (without stand) |
324 mm | |
Depth (without stand) |
55.5 mm | |
Weight |
5.3 kg | |
Multi-monitor bundle |
No | |
Power supply |
Energy class |
E |
Consumption |
18 kWh/1000h | |
Standby consumption |
0.5 W | |
Internal power supply |
Yes | |
Specificities |
PS5 optimized |
Yes |
Xbox Series optimized |
Yes | |
Warranties |
Commercial warranty |
Seller 2 years
|
Legal warranty |
See terms & conditions
|
|
Safety Information |
Responsible person |
Iiyama Corporation |
Postal address |
Wijkermeerstraat 8, 2131 HA Hoofddorp, The Netherlands | |
Electronic Address |
reg@iiyama.com |
See all iiyama products
Product referenced on 14 Jan 2026
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