Tired of fuzzy images and lag when you game or work from home? The iiyama G-MASTER G4380UHSU-B2 gives you crystal-clear 4K detail on a 42.5-inch screen, so you can see every pixel without strain. If you have struggled with low-resolution monitors that make text hard to read and games look dull, this model solves that problem with bright colors, fast refresh and smooth motion.
iiyama G-MASTER G4380UHSU-B2, 42.5", 3840 x 2160 pixels, 4K Ultra HD Monitor
Many users complain that their current screen cannot keep up with fast-moving games or detailed design work. The result is eye fatigue and missed details. This matters because you spend hours in front of the display, whether for entertainment or professional tasks. The iiyama monitor answers with a 144 Hz VA panel, HDR 400 support and 0.3 ms response, delivering sharp images, vibrant colors and fluid motion that keep you comfortable and in control.
Usages of iiyama
The G-MASTER works great for competitive gaming, where high refresh and low lag give you an edge. It also fits graphic designers who need accurate 10-bit color and wide NTSC coverage for photo and video editing. Office workers benefit from the large 4K workspace that lets you keep many windows open without crowding. Streamers can use the built-in USB hub and speakers to produce clear audio while sharing their screen.
Benefits
- Ultra-sharp 4K resolution reduces eye strain.
- 144 Hz refresh and 0.3 ms response eliminate motion blur.
- HDR 400 brightens games and movies for vivid realism.
- Built-in speakers and USB hub keep your desk tidy.
- Adaptive Sync matches frame rates for smoother play.
Specifications
| Display |
| NTSC coverage (typical) |
85% |
| Colour depth |
10 bit |
| Haze rate |
2% |
| DDC/CI |
Yes |
| High Dynamic Range (HDR) technology |
High Dynamic Range (HDR) 400 |
| High Dynamic Range (HDR) supported |
Yes |
| Display diagonal (metric) |
108 cm |
| Viewable size, vertical |
52.9 cm |
| Viewable size, horizontal |
94.1 cm |
| Horizontal scan range |
30 - 335 kHz |
| Pixel pitch |
0.245 x 0.245 mm |
| Display number of colours |
1.07 billion colours |
| Viewing angle, vertical |
178° |
| Viewing angle, horizontal |
178° |
| Maximum refresh rate |
144 Hz |
| Contrast ratio (dynamic) |
80000000:1 |
| Contrast ratio (typical) |
4000:1 |
| Screen shape |
Flat |
| Display surface |
Matt |
| Response time (MPRT) |
0.3 ms |
| Display brightness (typical) |
550 cd/m² |
| Panel type |
VA |
| HD type |
4K Ultra HD |
| Touchscreen |
No |
| Display technology |
LED |
| Native aspect ratio |
16:9 |
| Display resolution |
3840 x 2160 pixels |
| Display diagonal |
108 cm (42.5") |
| Performance |
| Low Blue Light technology |
Yes |
| Flicker-free technology |
Yes |
| VESA Adaptive Sync support |
Yes |
| AMD FreeSync refresh rate range |
48 - 120 Hz |
| NVIDIA G-SYNC |
No |
| Multimedia |
| Built-in camera |
No |
| RMS rated power |
14 W |
| Number of speakers |
2 |
| Built-in speaker(s) |
Yes |
| Design |
| Feet colour |
Black |
| Product colour |
Black |
| Market positioning |
Gaming |
| Ports & interfaces |
| HDCP |
Yes |
| Headphone connectivity |
3.5 mm |
| Headphone outputs |
1 |
| Headphone out |
Yes |
| DisplayPort version |
1.4 |
| DisplayPorts quantity |
2 |
| HDMI version |
2.1 |
| HDMI ports quantity |
2 |
| HDMI |
Yes |
| USB Type-A downstream ports quantity |
2 |
| Number of USB Type-C upstream ports quantity |
1 |
| Number of upstream ports |
1 |
| USB upstream port type |
USB Type-C |
| USB hub version |
3.2 Gen 1 (3.1 Gen 1) |
| Built-in USB hub |
Yes |
| Ergonomics |
| Number of OSD languages |
11 |
| On Screen Display (OSD) languages |
Multi |
| On Screen Display (OSD) |
Yes |
| Tilt angle range |
-2 - 10° |
| Tilt adjustment |
Yes |
| Height adjustment |
No |
| Cable lock slot type |
Kensington |
| Cable lock slot |
Yes |
| Cable management |
Yes |
| Panel mounting interface |
200 x 100 mm |
| VESA mounting |
Yes |
| Power |
| Energy efficiency scale |
A to G |
| Power supply type |
Internal |
| AC input frequency |
50/60 Hz |
| AC input voltage |
100 - 240 V |
| Power consumption (off) |
0.3 W |
| Power consumption (standby) |
0.5 W |
| Power consumption (typical) |
89 W |
| Energy consumption (HDR) per 1000 hours |
85 kWh |
| Energy consumption (SDR) per 1000 hours |
48 kWh |
| Energy efficiency class (HDR) |
G |
| Energy efficiency class (SDR) |
F |
| Operational conditions |
| Operating temperature (T-T) |
5 - 35 °C |
| Storage relative humidity (H-H) |
5 - 85% |
| Operating relative humidity (H-H) |
10 - 80% |
| Storage temperature (T-T) |
-20 - 60 °C |
| Operating temperature (T-T) |
5 - 35 °C |
| Weight & dimensions |
| Weight (without stand) |
13 kg |
| Weight (with stand) |
14.8 kg |
| Height (with stand) |
621.5 mm |
| Depth (with stand) |
251 mm |
| Width (with stand) |
977.5 mm |
| Packaging data |
| Package weight |
20 kg |
| Package height |
760 mm |
| Package depth |
240 mm |
| Package width |
1071 mm |
| Packaging content |
| Quick start guide |
Yes |
| Remote control batteries included |
Yes |
| Remote control included |
Yes |
| Cables included |
AC, DisplayPort, HDMI, USB |
| Stand included |
Yes |
| Other features |
| Package weight |
20 kg |
