# iiyama G-MASTER GB2791QSU-B1 27-inch Fast IPS Gaming Monitor, 2560 x 1440 QHD, 320Hz, Black

**URL:** https://aio.lv/en/product--iiyama-gb2791qsu-b1--11678752
**Data updated:** 2026-06-22 11:27 (EEST)
**Category:** Monitors
**Manufacturer:** IIYAMA
**Manufacturer code:** GB2791QSU-B1
**EAN:** 4948570126859
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 245.49 €
**Prices and availability valid until:** 2026-08-05 23:59
**Price without VAT (21%):** 202.88 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--iiyama-gb2791qsu-b1--11678752

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.89 EUR |
| Courier delivery to door | 23.07.2026 | 7.37 EUR |

## Summary description

The iiyama G-MASTER GB2791QSU-B1 is a 27-inch gaming monitor featuring a Fast IPS panel with a 2560 x 1440 QHD resolution. Designed for high-performance gaming, it offers a 320Hz refresh rate, 1000:1 contrast ratio, and 350 cd/m² brightness. The monitor includes built-in speakers, a USB hub, and an adjustable stand with VESA support, providing a versatile and immersive visual experience for competitive players.

## Long description

The iiyama G-MASTER GB2791QSU-B1 is a high-performance 27-inch gaming monitor engineered for competitive players who demand speed and precision. Featuring a Fast IPS panel with a sharp 2560 x 1440 QHD resolution, this display delivers vibrant colors and wide viewing angles. With an ultra-high 320Hz refresh rate and a rapid 0.6ms response time, it ensures fluid motion and minimal ghosting, providing a significant advantage in fast-paced gaming environments.
Advantages
The primary strength of this monitor lies in its exceptional motion clarity, driven by the combination of a 320Hz refresh rate and Fast IPS technology. This ensures that even the fastest action remains crisp and clear, reducing motion blur significantly. The inclusion of a Black Tuner allows users to adjust brightness and dark levels, revealing hidden details in shadowed areas of the game. Furthermore, the ergonomic stand offers extensive height adjustment, ensuring that users can maintain a comfortable posture during extended gaming sessions, while the integrated USB hub and built-in speakers add convenience to any desktop setup.
Suitable for
Competitive esports gaming
Fast-paced first-person shooters
Action and racing games
General productivity and multitasking
This monitor may not be the ideal choice for professional color-critical work such as high-end photo editing or print design, where specialized wide-gamut displays are typically required. Additionally, users with limited desk space may find the 27-inch footprint and the stand's depth to be more substantial than smaller, more compact monitor options.
Key specifications
Display diagonal: 27 inches
Resolution: 2560 x 1440 QHD
Panel type: Fast IPS
Refresh rate: 320Hz
Response time: 0.6ms MPRT
Brightness: 350 cd/m²
Contrast ratio: 1000:1
Connectivity: Built-in USB hub, DisplayPort, HDMI
Ergonomics: Height-adjustable stand, VESA mount compatible
Audio: Built-in speakers
To begin using the monitor, connect it to your PC using a high-speed DisplayPort or HDMI cable capable of supporting the high refresh rate. Once connected, navigate to your operating system's display settings to ensure the refresh rate is set to the maximum 320Hz. You can use the on-screen display menu to toggle the Black Tuner settings and customize the image profile to suit your specific gaming environment or ambient lighting conditions.
What to consider before purchase
Ensure your graphics card supports the high refresh rate and resolution via the available ports.
Check your desk dimensions to accommodate the 27-inch screen and stand.
Verify if your current setup requires VESA mounting for monitor arms.
For the best gaming experience, it is recommended to enable FreeSync Premium in the monitor settings and match it with a compatible graphics card to eliminate screen tearing and stuttering during gameplay.

## Specifications

### Display

| Feature | Value |
|---|---|
| Display diagonal | 27 " |
| HD type | Wide Quad HD |
| Panel type | Fast IPS |
| Display resolution | 2560 x 1440 |
| Pixel pitch | 0.233 x 0.233 |
| Contrast ratio (typical) | 1000:1 |
| Display brightness (typical) | 350 cd/m² |
| Viewing angle, vertical | 178 ° |
| Viewing angle, horizontal | 178 ° |
| Horizontal scan range | 30 - 550 |
| Display diagonal (metric) | 68.5 cm |
| Contrast ratio (dynamic) | 80000000:1 |
| Native aspect ratio | 16:9 |
| Display surface | Matt |
| Display number of colours | 16.7 million colours |
| Colour depth | 8 bit |
| High Dynamic Range (HDR) supported | Yes |
| High Dynamic Range (HDR) technology | High Dynamic Range 10 (HDR10) |
| Response time (MPRT) | 0.6 ms |

### Design

| Feature | Value |
|---|---|
| Product colour | Black |
| Panel mounting interface | 100 x 100 |

### Ports & interfaces

| Feature | Value |
|---|---|
| HDMI ports quantity | 2 |
| DisplayPorts quantity | 1 |
| Headphone out | Yes |
| Built-in USB hub | Yes |
| USB hub version | 3.2 Gen 1 (3.1 Gen 1) |
| Number of downstream ports | 4 |

### Ergonomics

| Feature | Value |
|---|---|
| Swivel angle range | -45 - 45 |
| Cable management | Yes |
| Tilt adjustment | Yes |
| Cable lock slot type | Kensington |
| VESA mounting | Yes |
| Adjustable height (max) | 150 mm |

### Audio

| Feature | Value |
|---|---|
| Built-in speaker(s) | Yes |

### Performance

| Feature | Value |
|---|---|
| HDCP | Yes |
| AMD FreeSync | Yes |
| Flicker-free technology | Yes |
| Low Blue Light technology | Yes |

### Multimedia

| Feature | Value |
|---|---|
| RMS rated power | 4 W |
| Number of speakers | 2 |

### Technical details

| Feature | Value |
|---|---|
| Sustainability certificates | ErP |
| Compliance certificates | TÜV mark, CE, EAC, PSE, REACH, RoHS, UKCA, VCCI, WEEE |

### Other features

| Feature | Value |
|---|---|
| Maximum refresh rate | 320 Hz |
| Viewable size, vertical | 335.7 mm |
| Power cable length | 1.8 m |
| Power supply type | Internal |
| Viewable size, horizontal | 596.7 mm |
| Packaging content | quick start guide, safety guide |
| User controls | picture adjust (contrast, brightness, OverDrive, HDR, Adaptive Sync, night mode, blue light reducer, Motion Blur Reducer, gamma), input select (input source, auto/ manual, DP, HDMI1, HDMI2), audio adjust (volume, mute), store user settings (user modes), colour settings (6-axis, colour temperature, user preset, black tuner), image adjust (i-Style Colour, X-Res Technology, sharpness, HDMI range, Direct Drive Mode, video mode adjust), language, OSD setup menu (OSD H. position, OSD V. position, OSD Time, Opening Logo, Power LED, DDC/ DI Control, USB charge), display information, reset (reset all) |
| Cable lock slot | Yes |
| Height adjustment | Yes |
| Control panel | power switch, joystick, menu (center), up / signal select, down / shortcut, left / volume -, right / volume + |
| Pivot | Yes |
| Swivelling | Yes |
| Weight (without stand) | 4000 g |
| Height (without stand) | 313 mm |

### Power

| Feature | Value |
|---|---|
| Energy efficiency class (SDR) | F |
| Energy efficiency class (HDR) | G |
| Energy consumption (SDR) per 1000 hours | 23.5 kWh |
| Power consumption (typical) | 24 W |
| Power consumption (off) | 0.3 W |
| Power consumption (standby) | 0.5 W |
| AC input frequency | 50/60 |
| AC input voltage | 100 - 240 |
| Energy efficiency scale | A to G |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight (with stand) | 5800 g |
| Weight | 5.8 kg |
| Height | 313 mm |
| Width | 612 mm |
| Width (with stand) | 612 mm |
| Height (with stand) | 313 mm |

### Packaging content

| Feature | Value |
|---|---|
| Cables included | HDMI, AC, USB, DisplayPort |
| HDMI cable length | 1.8 m |
| DisplayPort cable length | 1.8 m |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 8400 g |
| Package depth | 465 mm |
| Package height | 140 mm |
| Package width | 690 mm |
| USB cable length | 1.8 m |

### Sustainability

| Feature | Value |
|---|---|
| Doesn't contain | Lead |

## FAQ

### How much does the iiyama G-MASTER GB2791QSU-B1 27" QHD Gaming Monitor cost, and is it available for purchase?

The price is 245.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 105 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 20.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can iiyama G-MASTER GB2791QSU-B1 27" QHD Gaming Monitor be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All IIYAMA products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized IIYAMA service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: display diagonal, display resolution, hd type, panel type, pixel pitch, contrast ratio (typical), display brightness (typical), built-in usb hub, vesa mounting, built-in speaker(s), energy efficiency class (sdr), energy efficiency class (hdr), energy consumption (sdr) per 1000 hours, weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for iiyama G-MASTER GB2791QSU-B1 27" QHD Gaming Monitor?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/11678752/68889227_large.webp