AOC U27G4 27" Fast IPS Dual-Mode Gaming Monitor | 4K UHD 160Hz / FHD 320Hz | 0.3ms | HDR400 | HDMI 2.1 ×2 | DP 1.4 | HAS Pivot VESA
Description
The AOC U27G4 is a 27-inch Fast IPS dual-refresh-rate gaming monitor designed to switch between 4K UHD at 160Hz for high-detail gaming and Full HD at 320Hz for competitive esports. It also supports VESA DisplayHDR 400, Adaptive Sync/G-SYNC Compatible operation, HDMI 2.1, DisplayPort 1.4, and a fully adjustable ergonomic stand.
| Specification | Details |
|---|---|
| Brand | AOC |
| Model | U27G4 |
| Screen Size | 27" / 68.6 cm |
| Panel Type | Fast IPS |
| Dual Resolution Mode | 3840 × 2160 UHD / 1920 × 1080 FHD |
| Max Refresh Rate at 4K | 160Hz |
| Max Refresh Rate at FHD | 320Hz |
| Response Time | 0.5ms MPRT at UHD / 0.3ms MPRT at FHD |
| Aspect Ratio | 16:9 |
| Brightness | 350 nits SDR / 450 nits HDR |
| Static Contrast | 1000:1 |
| Viewing Angle | 178° / 178° |
| Display Colors | 1.07 Billion |
| HDR | VESA DisplayHDR 400 |
| Sync | Adaptive Sync / G-SYNC Compatible |
| Surface | Anti-glare |
Dual-Mode Gaming
The main advantage of the U27G4 is its Dual Refresh Rate mode:
- 3840 × 2160 4K UHD at up to 160Hz
- 1920 × 1080 Full HD at up to 320Hz
This lets you prioritize either image quality or maximum competitive speed without changing monitors.
Fast IPS Performance
The Fast IPS panel combines high refresh rates with wide viewing angles and strong color performance. AOC lists:
- 178° / 178° viewing angles
- 1.07 billion colors
- 127% sRGB
- 99% DCI-P3
- 108% NTSC
- 350 nits SDR brightness
- 450 nits HDR peak brightness
Response Time
AOC specifies different MPRT figures depending on operating mode:
- 4K UHD mode: 0.5ms MPRT
- FHD 320Hz mode: 0.3ms MPRT
This makes the FHD mode particularly suitable for fast FPS, racing, and esports titles.
Connectivity
| Port | Quantity |
|---|---|
| HDMI 2.1 | 2 |
| DisplayPort 1.4 | 1 |
| 3.5mm Headphone Out | 1 |
Both HDMI 2.1 and DisplayPort 1.4 support the monitor's high-refresh operating modes, subject to the connected GPU/device and cable capabilities. AOC's manual lists support for 10-bit output at both UHD 160Hz and FHD 320Hz under supported signal configurations.
Ergonomic Stand
| Adjustment | Range |
|---|---|
| Height Adjustment | 130 mm |
| Tilt | -5° to +23° |
| Swivel | -30° to +30° |
| Pivot | -90° to +90° |
| VESA Mount | 100 × 100 mm |
HDR & Gaming Features
The U27G4 includes:
- VESA DisplayHDR 400
- Adaptive Sync
- G-SYNC Compatible support on selected regional specifications
- Low Input Lag
- Fast IPS panel
- Dual refresh-rate mode
- Hardware low-blue-light technology
- Anti-glare display
Power
| Specification | Details |
|---|---|
| Power Input | 100–240V, 50/60Hz |
| Typical Consumption | 34W |
| Maximum Consumption | ≤66W |
| Standby | ≤0.5W |
| Power Supply | Internal |
Main Product Highlights
- 27" Fast IPS
- Dual-Mode Gaming
- 4K UHD 3840 × 2160 @ 160Hz
- FHD 1920 × 1080 @ 320Hz
- 0.5ms MPRT UHD / 0.3ms MPRT FHD
- DisplayHDR 400
- 1.07 Billion Colors
- 99% DCI-P3
- Adaptive Sync
- G-SYNC Compatible
- HDMI 2.1 ×2
- DisplayPort 1.4 ×1
- 130mm Height Adjustment
- Swivel / Pivot / Tilt
- VESA 100 × 100 mm
