Tested by IMartz
AOC U27G4R
27-inch Dual Mode monitor with a Fast IPS panel, 4K at 160 Hz and 1080p at 320 Hz, very good value, full-bandwidth HDMI 2.1 for PS5 and a built-in USB hub.
PanelIPS
Choose between two resolution and refresh-rate modes: one prioritises detail and the other a higher refresh rate. See the specifications for the available combinations.
This monitor is listed as supporting variable refresh rate on PS5. See the console section for supported resolutions and refresh rates.
IMartz verdict
Pros
- Dual Mode: 4K 160 Hz and 1080p 320 Hz
- Full-bandwidth HDMI 2.1, ideal for PS5
- Very good value with full ergonomic adjustments and a USB hub
Things to consider
- Largely nominal HDR
- Factory calibration could be better for whites and light grays
- No OSD joystick, no USB-B cable for the hub and no 24-inch cropped mode
A good fit if…
- Switching between AAA games in 4K and competitive gaming at 320 Hz
- PC gaming and PS5 on one monitor
- Those seeking inexpensive Dual Mode without moving to higher price tiers
Consider another option if…
- You want real, impactful HDR
- You need impeccable out-of-box accuracy without adjusting settings
- You want an OSD joystick or a 24-inch cropped competitive mode
Measurements and specifications
IMartz test results. See each section for the measurement conditions.
Display and format
SDR performance
Color, brillo, contraste y comportamiento básico fuera de HDR.
HDR performance
Brillo pico, volumen de color, EOTF y experiencia HDR real.
Test note · EOTF tracking
The HDR modes raise black levels and shadows. DisplayHDR compresses the upper curve before reaching maximum brightness; Movie and Game change this distribution of light but do not resolve the panel's lack of contrast.
Response time and PC gaming
Overdrive, tiempo de respuesta, overshoot, VRR e input lag.
Test note · Input lag
The original does not identify the conditions of each reading. · First reading · mode unconfirmed: 2.1 ms · Second reading · mode unconfirmed: 1.7 ms
PS5 and consoles
Compatibilidad con VRR, ALLM y resoluciones permitidas.
Connectivity
Entradas de vídeo, USB-C, KVM, hub USB y extras de conexión.
Stand, mounting and extras
Calidad física, ergonomía, VESA y detalles destacables.
HDR notes
The HDR modes raise black levels and shadows. DisplayHDR compresses the upper curve before reaching maximum brightness; Movie and Game change this distribution of light but do not resolve the panel's lack of contrast.
Photos and test results
Open an image to view the full-size charts and browse the tests.
Colour gamut and accuracy
Grayscale and gamma
Brightness and uniformity
Luminance and EOTF
Colour gamut and accuracy
Response time, motion and latency
Alternatives
Other options, each with its own specifications and test results.
