27-inch QHD Fast IPS gaming with up to 320Hz refresh
2560 × 1440Fast IPSUp to 320Hz150mm height adjustment
The iiyama G-MASTER GB2791QSU-B1 Gold Phoenix combines a 27-inch QHD Fast IPS panel with refresh rates up to 320Hz and a specified 0.6ms MPRT response time. Its adjustable stand, USB hub and integrated speakers make it a practical desktop gaming display, while DisplayPort and two HDMI inputs give you several ways to connect your equipment.
Best For: PC gamers who want QHD detail and high refresh rates with an adjustable stand, and who have a graphics card capable of their target resolution and frame rate.
Before you order: For QHD 320Hz with adaptive sync, use a compatible DisplayPort setup. HDMI reaches QHD 320Hz without adaptive sync; its listed adaptive-sync range stops at 300Hz. USB-C ports are downstream USB hub ports, not video inputs or laptop charging docks. The 0.6ms figure is MPRT, not a stated grey-to-grey time.
What's in the Box
- iiyama G-MASTER GB2791QSU-B1 monitor with adjustable stand
- Power, USB, HDMI and DisplayPort cables, each listed at 1.8m
- Quick start guide and safety guide
What It Means in Practice
- Choose the refresh rate in your operating system and game settings. A 320Hz panel does not make every game run at 320 frames per second.
- Connect the USB Type-B upstream port to the computer to use the downstream hub: two USB-A and two USB-C ports.
- Adjust height through 150mm, swivel, tilt or pivot to suit your desk. A compatible 100 × 100mm VESA mount can replace the stand.
- Use the built-in 2 × 2W speakers for basic audio or the headphone output for headphones.
What Will Not Work
- The USB-C ports do not replace an HDMI or DisplayPort video cable, and their 5W rating does not provide laptop-class charging.
- HDR10 support alone is not a promise of local dimming or a DisplayHDR certification.
- High refresh, adaptive sync and motion-blur settings depend on the input and selected mode. Check the manual when combining them.
Key Features
QHD Fast IPS panel
2560 × 1440 resolution on a matte 27-inch panel with wide stated viewing angles.
High refresh for fast action
Up to 320Hz with 0.6ms MPRT; actual game frame rate depends on the PC and settings.
Comfortable positioning
150mm height adjustment, swivel, tilt and pivot help fit the display to your desk.
Useful desk connections
Two HDMI 2.1 inputs, DisplayPort 1.4, a four-port USB hub and headphone output.
Technical Specifications
| Model |
G-MASTER GB2791QSU-B1 Gold Phoenix |
| Screen size |
27-inch / 68.5cm |
| Panel |
Fast IPS, matte |
| Native resolution |
2560 × 1440 QHD |
| Aspect ratio |
16:9 |
| Maximum refresh |
320Hz; input/mode conditions apply |
| Response specification |
0.6ms MPRT |
| Brightness |
350 cd/m² typical |
| Static contrast |
1000:1 |
| Advanced contrast |
80,000,000:1, dynamic manufacturer rating |
| Viewing angles |
178° horizontal / 178° vertical |
| Colour support |
16.7 million, 8-bit |
| Active area |
596.7 × 335.7mm |
| Pixel pitch |
0.233mm |
| Finish / colour |
Matte black |
| HDMI inputs |
2 × HDMI 2.1; QHD up to 320Hz without adaptive sync |
| DisplayPort input |
1 × DisplayPort 1.4; QHD up to 320Hz |
| Adaptive-sync ranges |
HDMI QHD 48–300Hz; DisplayPort QHD 48–320Hz |
| NVIDIA G-SYNC Compatible |
Manufacturer feature statement specifies DisplayPort |
| USB upstream |
1 × Type-B, USB 3.2 Gen 1 |
| USB downstream Type-A |
2 × USB 3.2 Gen 1, 5Gbps, 5V/0.9A (4.5W) |
| USB downstream Type-C |
2 × USB 3.2 Gen 1, 5Gbps, 5V/1A (5W); not video inputs |
| Headphones |
3.5mm stereo output |
| Speakers |
2 × 2W |
| HDR input support |
HDR10 |
| Eye-comfort functions |
Blue light reducer; flicker-free |
| Image controls |
Black Tuner, i-Style Colour, OverDrive and on-screen image settings |
| Control interface |
Power switch and joystick |
| Height adjustment |
150mm |
| Pivot |
90° rotation |
| Swivel |
45° left / 45° right |
| Tilt |
23° up / 5° down |
| VESA mount |
100 × 100mm |
| Cable management |
Yes |
| Security |
Kensington lock provision |
| Power supply |
Internal; AC 100–240V, 50/60Hz |
| Power consumption |
24W typical; standby 0.5W; off 0.3W |
| Energy class |
F, EU 2017/1369 |
| Weight with stand |
5.8kg |
| Weight without stand |
4kg |
| Packed weight |
8.4kg |
| Supplied cables |
Power, USB, HDMI, DP; 1.8m each |
| Condition |
New |
Frequently Asked Questions
Does USB-C carry video from my laptop?
No. The manual identifies the two USB-C ports as downstream USB ports. Use HDMI or DisplayPort for video and Type-B upstream for the hub.
Can I use adaptive sync at 320Hz over HDMI?
The product page lists HDMI 320Hz without adaptive sync and an HDMI adaptive range of 48–300Hz. DisplayPort supports the listed 48–320Hz range.
Is 0.6ms the grey-to-grey response time?
The manufacturer states 0.6ms MPRT. It is not presented as a grey-to-grey measurement.
Are speakers and cables included?
The monitor has 2 × 2W speakers. Power, USB, HDMI and DisplayPort cables are listed as included.
Singular Expert Insight
Match the connection to the mode you actually intend to use. DisplayPort is the clearest route to the listed QHD 320Hz adaptive-sync range, while the USB hub needs its own upstream connection. Check graphics performance at QHD before treating the panel's maximum refresh rate as your expected game frame rate.
Buyer’s Guide
✓ Buy it if You want a 27-inch QHD high-refresh gaming display with an adjustable stand and practical USB hub.
✕ Skip it if You need a single USB-C cable for video and laptop charging, or require a 4K native panel.
→ Also consider A suitable DisplayPort output on your GPU and an optional VESA arm if the supplied stand does not suit your desk.