iiyama ProLite XCB4594DQSN-B1 44.5" Curved DQHD Monitor
iiyama
iiyama ProLite XCB4594DQSN-B1 44.5" Curved DQHD Monitor
The iiyama ProLite XCB4594DQSN-B1 is a 44.5" ultra-wide curved monitor built for professionals and gamers who need expansive workspace and smooth motion in one display. Its dual QHD resolution and 165Hz refresh rate combine desktop productivity with gaming performance, while integrated KVM and USB-C connectivity eliminate cable clutter.
Why this product
Ultra-wide 32:9 workspace
5120×1440 DQHD resolution spans the width of two standard QHD monitors, letting you open multiple windows side-by-side without resizing or switching between tabs.
1500R curve reduces eye strain
The curved VA panel wraps around your field of view, minimizing the distance your eyes travel and lowering fatigue during extended work or gaming sessions.
165Hz for smooth motion
Pairs with 0.8ms response time and AMD FreeSync / G-Sync compatibility to deliver fluid gameplay and graphics without tearing.
One cable does it all
USB-C dock delivers display signal, 90W power delivery, and charging from a single connection—ideal for laptop users who want minimal desk clutter.
Operate two computers from one console
Built-in KVM switch lets you control multiple workstations using a single keyboard, mouse, and monitor—no manual switching required.
HDR 400 with high brightness
450 cd/m² brightness and HDR support ensure vivid, punchy visuals across games, films, and professional content.
- Screen size44.5" (113 cm)
- Resolution5120 × 1440 (DQHD)
- Refresh rate165 Hz
- Response time0.8 ms MPRT
- Brightness450 cd/m²
- KVM switchYes, built-in
- USB-C power delivery90W
- Curved panel1500R VA
- SKUIIY-1544
- EAN4948570122271
- Connects via HDMI 2.1, DisplayPort 1.4 (with MST and DSC), or USB-C with full DP Alt Mode support.
- AMD FreeSync and NVIDIA G-Sync compatible for tear-free gaming on both platforms.
- USB-C dock supplies 90W power delivery, suitable for most laptops and ultrabooks requiring up to 90W charging.
- Ethernet RJ45 port allows automatic network connection for USB-C connected notebooks.
- KVM switch requires connected devices to support USB input; some legacy or specialty equipment may require manual configuration.
Best for
- Professional multi-tasking
- Spreadsheet and document-heavy work
- Competitive gaming and esports
- Video and graphics editing with extended workspace
- Hot-desking between multiple workstations
Trade-offs
- Single-cable minimalists on a tight desk. Despite USB-C power delivery, the monitor also requires HDMI or DisplayPort for video, so a truly single-cable setup is not possible unless using USB-C Alt Mode exclusively.
- Buyers needing true 4K sharpness per inch. While 5120×1440 is sharp across the ultra-wide span, the pixel density is lower than a 27" 4K or 32" 4K monitor, so fine detail work in photography or design may benefit from higher per-inch density.
- Users in very bright rooms without adequate positioning. At 450 cd/m² peak brightness, it is moderately bright but not classified as professional HDR broadcast-reference level, which may wash out in direct sunlight or beside large windows.
- Buyers needing wide colour gamut certification. The specs table does not list Adobe RGB, DCI-P3, or sRGB coverage figures, so colour-critical professional work may require validation against your workflow standards.
iiyama proudly introduces the XCB4594DQSN-B1, a 45'' Dual QHD desktop monitor engineered to seamlessly blend work and gaming into one screen. Designed with the modern professional in mind, it delivers razor-sharp images to create the perfect multi-tasking hub.
The Dual QHD resolution ensures sharp and detailed visuals, catering to the demands of professional tasks and delivering a visually immersive experience. From detailed spreadsheets to lifelike gaming worlds, the XCB4594DQSN excels in every aspect. The 1500R curved VA panel provides expansive viewing angles and vivid colours, minimizing eye strain during extended work hours.
Equipped with an integrated KVM switch the desktop allows users to effortlessly switch between workstations, transforming the monitor into a versatile command center where users can navigate between tasks without the hassle of juggling multiple peripherals, ensuring a smooth transition from work projects to gaming adventures.
The XCB4594DQSN features a 1500R curved VA panel with a 165Hz refresh rate, 0.8ms MPRT, and a 5120x1440 (DQHD) resolution for superb image quality. The KVM switch allows you to connect multiple computers that can be operated over one console (monitor, keyboard, mouse). The USB-C dock simplifies setup with one cable for laptop signal transmission, power, and charging. Connecting to the Internet via LAN automatically links your notebook to the network. The VA panel ensures expansive viewing angles and vivid colours, and the 1500R curvature minimizes eye strain for a lifelike and fully immersive gaming experience. The dual QHD resolution provides sharp visuals, and the height-adjustable stand adds a comfortable and highly ergonomic experience.
Ultra-wide 32:9 monitors with a DQHD 5120x1440 resolution, also called dual QHD, deliver razor-sharp images. They make it possible to divide the workspace into multiple windows and simultaneously open all the documents you need.
General
| Brand | iiyama |
|---|---|
| Model | ProLite XCB4594DQSN-B1 |
| Panel type | VA |
| Curvature | 1500R |
| Aspect ratio | 32:9 |
Display
| Resolution | 5120 × 1440 (DQHD / Dual QHD) |
|---|---|
| Refresh rate | 165 Hz |
| Response time | 0.8 ms MPRT |
| Brightness | 450 cd/m² |
| Contrast ratio | 3000:1 |
| Colour depth | Approx. 16.7 Million |
| HDR | HDR 400 |
| Adaptive Sync | AMD FreeSync / Adaptive Sync (NVIDIA G-Sync compatible) |
Connectivity
| HDMI inputs | 2× HDMI 2.1 |
|---|---|
| DisplayPort | 1× DisplayPort 1.4 (MST; DSC) |
| USB-C | 1× USB 3.2 Type-C (Gen1; 5 Gbps; upstream; 90W; DP Alt Mode) |
| USB Type-A | 3× USB 3.2 Type-A (Gen1; 5 Gbps; downstream) |
| USB Type-B | 1× USB 3.2 Type-B (Gen1; 5 Gbps; upstream) |
| Audio | Built-in speakers, 1× 3.5 mm Audio Out |
| Network | 1× Ethernet RJ45 |
| KVM switch | Yes |
Physical & Power
| Height adjustment | 130 mm |
|---|---|
| Colour | Black, matte |
| Power supply | 100 V – 120 V / 220 V – 240 V |
| Operating temperature | 5 °C – 35 °C (41 °F – 95 °F) |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.