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34-inch Ultrawide · 200Hz · 3440 × 1440
AOC CU34G4H 34-inch Curved Gaming Monitor
Expand your gaming and desktop workspace with a 21:9 WQHD display, 1500R curvature and Fast VA panel. The CU34G4H supports up to 200Hz over DisplayPort 1.4, with Adaptive Sync and AMD FreeSync Premium for compatible systems.
Best suited to: immersive PC gaming, ultrawide productivity and users who want a wider desktop canvas.

Key features
3440 × 1440 resolution and a 21:9 aspect ratio provide additional horizontal workspace compared with a standard 16:9 display.
Supports up to 200Hz at 3440 × 1440 through DisplayPort 1.4. HDMI 2.0 supports up to 100Hz at the same resolution.
The curved Fast VA panel has a 4,000:1 typical static contrast ratio and 300 cd/m² typical brightness.
Adaptive Sync and AMD FreeSync Premium support variable refresh rate operation with compatible graphics hardware and settings.
Resolution and refresh-rate compatibility
Ergonomics and connectivity
- Height adjustment up to 130mm, swivel from -20° to +20°, and tilt from -5° to +23°.
- VESA 100 × 100mm mounting support.
- Two HDMI 2.0 inputs and one DisplayPort 1.4 input.
- 3.5mm headphone output; no integrated speakers and no USB hub.
- Picture-in-Picture and Picture-by-Picture support.
Technical specifications
| Model Name | AOC CU34G4H |
|---|---|
| EAN-13 | 6973985233517 |
| Screen Size | 34 inches (86.4cm diagonal) |
| Panel Type | Fast VA, 1500R curved |
| Aspect Ratio | 21:9 |
| Native Resolution | 3440 × 1440 (WQHD) |
| Refresh Rate | Up to 200Hz (DisplayPort 1.4); up to 100Hz (HDMI 2.0) |
| Response Time | 1ms GtG / 0.3ms MPRT |
| Static Contrast | 4,000:1 typical |
| Brightness | 300 cd/m² typical |
| Color Gamut | NTSC 107%, sRGB 126%, DCI-P3 98% (manufacturer-stated) |
| Color Accuracy | Delta E < 2 (manufacturer-stated) |
| Sync Technology | Adaptive Sync; AMD FreeSync Premium |
| HDR | HDR10 compatibility |
| Video Inputs | 2 × HDMI 2.0; 1 × DisplayPort 1.4 |
| Audio | 3.5mm headphone output; no built-in speakers |
| USB Hub | Not included |
| Stand Adjustment | 130mm height; -20° to +20° swivel; -5° to +23° tilt |
| VESA Mount | 100 × 100mm |
| Dimensions with Stand | 808.1 × 435.7–534.7 × 269.4mm (W × H × D) |
| Weight with Stand | 7.4kg |
| Typical Power Consumption | 39W |
| Included Cable | DisplayPort cable, 1.8m (manufacturer leaflet) |
| Warranty | 3 Years |
Frequently asked questions
Can I get 200Hz through HDMI?
No. AOC specifies up to 200Hz at 3440 × 1440 through DisplayPort 1.4, while HDMI 2.0 is specified up to 100Hz at that resolution.
Does the monitor have built-in speakers?
No. It has a headphone output but no integrated speakers.
Can I mount it on a monitor arm?
Yes, it supports a 100 × 100mm VESA mount. Check the arm’s supported screen size and weight before installation.
Where can I verify the specifications?
See the official AOC CU34G4H page and official product leaflet.





























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