AOC G4 U27G4 27″ 320Hz Monitor

27 inch · 3840 x 2160 · 320 Hz · Fast IPS

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Screen size 27 inch
Resolution 3840 x 2160
Refresh rate 320 Hz
Panel Fast IPS

AOC G4 U27G4 27″ 320Hz Monitor is a 27-inch monitor with 3840 x 2160 resolution, a 320 Hz refresh rate and Fast IPS panel. The high refresh rate makes fast games look smoother. It came out in 2025.

Released: 2025-05-05

Specifications

Key specs

Screen size: 27 inch
Resolution: 3840 x 2160
Refresh rate: 320 Hz
Panel: Fast IPS
Released: 2025-05-05
Part number: U27G4

Display

Display diagonal: 68.6 cm (27")
Display resolution: 3840 x 2160 pixels
HD type: 4K Ultra HD
Native aspect ratio: 16:9
Display technology: LED
Panel type: Fast IPS
LED backlight: Yes
Backlight type: W-LED
Display brightness (typical): 350 cd/m²
Response time measurement type: GTG (Gray to Gray)
Response time (MPRT): 0.3 ms
Anti-glare screen: Yes
Screen shape: Flat
Contrast ratio (typical): 1000:1
Dynamic contrast ratio marketing name: Mega DCR
Maximum refresh rate: 320 Hz
Viewing angle, horizontal: 178°
Viewing angle, vertical: 178°
Display number of colours: 1.07 billion colours
Pixel pitch: 0.15525 x 0.15525 mm
Viewable size, horizontal: 59.6 cm
Viewable size, vertical: 33.5 cm
Display diagonal (metric): 68.6 cm
High Dynamic Range (HDR) supported: Yes
High Dynamic Range (HDR) technology: DisplayHDR 400
Colour gamut standard: DCI-P3, NTSC, sRGB
sRGB coverage (typical): 127%
NTSC coverage (typical): 108%
DCI-P3 coverage: 99%

Performance

VESA Adaptive Sync support: Yes
Flicker-free technology: Yes
Low Blue Light technology: Yes
Game mode: Yes

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Design

Market positioning: Gaming
Product colour: Black, Red
Frameless design: Yes
Front bezel colour: Black

Ports & interfaces

HDMI: Yes
HDMI ports quantity: 2
HDMI version: 2.1
DisplayPorts quantity: 1
DisplayPort version: 1.4
Headphone out: Yes
Headphone outputs: 1
Headphone connectivity: 3.5 mm
HDCP: Yes
HDCP version: 2.2

Ergonomics

VESA mounting: Yes
Panel mounting interface: 100 x 100 mm
Cable management: Yes
Cable lock slot: Yes
Height adjustment: Yes
Adjustable height (max): 13 cm
Pivot: Yes
Pivot angle: -90 - 90°
Swivelling: Yes
Swivel angle range: -30 - 30°
Tilt adjustment: Yes
Tilt angle range: -5 - 23°
Picture-in-Picture: Yes
On Screen Display (OSD): Yes
On Screen Display (OSD) languages: Simplified Chinese, Traditional Chinese, Czech, Dutch, English, Finnish, French, German, Italian, Japanese, Korean, Croatian, Polish, Portuguese, Russian, Spanish, Swedish, Turkish, Ukrainian

Power

Energy efficiency class (SDR): Not available
Energy efficiency class (HDR): Not available
Power consumption (typical): 34 W
AC input voltage: 100 - 240 V
AC input frequency: 50/60 Hz
Input current: 1.5 A
Power supply type: Internal

Weight & dimensions

Width (with stand): 613.9 mm
Depth (with stand): 239.9 mm
Height (with stand): 516 mm
Weight (with stand): 5.78 kg
Width (without stand): 366.3 mm
Depth (without stand): 51.3 mm
Height (without stand): 366.3 mm
Weight (without stand): 4.3 kg

Other features

Brand specific technologies: Crosshair
Low input lag: Yes
FPS counter: Yes
Dial point: Yes
Shadow control: Yes
Motion blur reduction: Yes
Warranty period: 3 year(s)
Compliance certificates: CE
Certification: RoHs compliant

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About this product

27" Dual Refresh Rate Gaming Monitor AOC U27G4 is a gaming monitor that stands out with its Dual Refresh Rate feature. It has a 27 - inch Fast IPS panel with hardware blue light free to confort your eyes while playing. You can enjoy a 4K UHD (3840 x 2160) resolution at 160Hz or switch to FHD (1920 x 1080) at 320Hz. With 0.3ms with 320Hz MPRT response time and VESA DisplayHDRTM 400, it offers smooth and vivid visuals. Multiple ports like HDMI 2.1 and DisplayPort 1.4 ensure easy device connection.

User manual (PDF)

U27G4 vs similar monitors

	AOC G4 U27G4 27″ 320Hz Monitor	ASUS ROG Strix XG27UCMG 27″ 240Hz Monitor	Acer XB273K V4 Widescreen Gaming LCD Monitor	ASUS TUF Gaming VG27AQM5F 27″ 320Hz Monitor
Screen size	27 inch	27 inch	27 inch	27 inch
Resolution	3840 x 2160	3840 x 2160	3840 x 2160	2560 x 1440
Refresh rate	320 Hz	240 Hz	320 Hz	320 Hz
Panel	Fast IPS	Fast IPS	TFT	Fast IPS
Released	2025	2026	2026	2026