AOC G4 Q27G4S 27″ 300Hz Monitor

27 inch · 2560 x 1440 · 300 Hz · Fast IPS

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Screen size 27 inch
Resolution 2560 x 1440
Refresh rate 300 Hz
Panel Fast IPS
Response time 1 ms

AOC G4 Q27G4S 27″ 300Hz Monitor is a 27-inch monitor with 2560 x 1440 resolution, a 300 Hz refresh rate and Fast IPS panel. The high refresh rate makes fast games look smoother. It came out in 2025.

Released: 2025-06-23

Specifications

Key specs

Screen size: 27 inch
Resolution: 2560 x 1440
Refresh rate: 300 Hz
Panel: Fast IPS
Response time: 1 ms
Released: 2025-06-23
Part number: Q27G4S

Display

Display diagonal: 68.6 cm (27")
Display resolution: 2560 x 1440 pixels
HD type: Quad HD
Display technology: LED
Panel type: Fast IPS
LED backlight: Yes
Backlight type: Direct LED
Display brightness (peak): 450 cd/m²
Display brightness (typical): 350 cd/m²
Response time: 1 ms
Response time measurement type: GTG (Gray to Gray)
Response time (MPRT): 0.3 ms
Screen shape: Flat
Contrast ratio (typical): 1500:1
Dynamic contrast ratio marketing name: Mega DCR
Maximum refresh rate: 300 Hz
Viewing angle, horizontal: 178°
Viewing angle, vertical: 178°
Display number of colours: 1.07 billion colours
Pixel pitch: 0.2331 x 0.2331 mm
Viewable size, horizontal: 59.7 cm
Viewable size, vertical: 33.6 cm
High Dynamic Range (HDR) supported: Yes
High Dynamic Range (HDR) technology: DisplayHDR 400
Colour gamut standard: DCI-P3, NTSC, sRGB
sRGB coverage (typical): 136%
NTSC coverage (typical): 110%
DCI-P3 coverage: 101%

Performance

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

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Design

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

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: -20 - 20°
Tilt adjustment: Yes
Tilt angle range: -5 - 23°
Picture-in-Picture: Yes

Power

Energy efficiency class (SDR): Not available
Energy efficiency class (HDR): Not available
Power consumption (typical): 25 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): 5.33 kg
Width (without stand): 366.3 mm
Depth (without stand): 51.3 mm
Height (without stand): 366.3 mm
Weight (without stand): 3.87 kg

Other features

Low input lag: Yes
Compliance certificates: CE
Certification: RoHs compliant,CB,FCC

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About this product

27" 300Hz Gaming Monitor Only for the true valiant! This AOC Q27G4S gaming monitor is made with a Fast IPS panel, Quad HD (2560 x 1440) resolution, G-Sync Compatible, guaranteeing you unbeatable gaming experience with its true 0.3 response time and 300 Hz refresh rate. Equipped with features like DisplayHDR 400, MBR Sync, PIP, PBP, Anti-Blue Light, adjustable stands, this monitor will surely raise your gaming performance to the next level! Enjoy an ultra-smooth gaming with this AOC gaming monitor to ensure you're always prepped to win!

Q27G4S vs similar monitors

	AOC G4 Q27G4S 27″ 300Hz Monitor	AOC AG276QSG2/11 27″ 360Hz Monitor	AOC G4 Q27G42ZE/69 27″ 260Hz Monitor	AOC G4 Q27G4ZRP 27″ 260Hz Monitor
Screen size	27 inch	27 inch	27 inch	27 inch
Resolution	2560 x 1440	2560 x 1440	2560 x 1440	2560 x 1440
Refresh rate	300 Hz	360 Hz	260 Hz	260 Hz
Panel	Fast IPS	Fast IPS	Fast IPS	Fast IPS
Response time	1 ms	1 ms	1 ms	1 ms
Released	2025	2026	2026	2026