AOC CU34G4Z Review (Budget 240Hz Ultrawide)

1. Introduction2. Design3. On-screen Display (OSD)4. Panel Analysis: SDR5. Response Times & Motion Clarity6. Input Latency7. Closing Thoughts8. View All Pages

There’s no doubt that being a PC enthusiast has had its challenges in recent years, with shortages, skyrocketing prices and a general slowdown in innovation, but it’s been great to see the gaming monitor segment bucking that trend and going from strength to strength. Today’s monitor is a great example of that, with the AOC CU34G4Z offering a curved 34in 3440×1440 ultrawide panel clocked at 240Hz, for less than £300. It certainly sounds good on paper, so let’s dive in and see what it’s like to use in the real world…

Timestamps

00:00 Intro
01:00 Pricing and key info
01:47 Design, first impressions
02:35 Connectivity + OSD
04:06 Factory calibration analysis
06:25 sRGB mode + calibration
07:09 Backlight bleed, viewing angles
07:25 Response time performance
09:34 Motion clarity examples
10:58 Real-world gaming experience
12:58 Closing thoughts

Just for some context around the pricing, right now AOC’s CU34G4Z is listed at £280 on Amazon and Currys, and while that does appear to be a Black Friday special at the time of writing, PCPartPicker price tracking reveals it’s been selling for under £300 since September anyway, so we’re only talking a £10-20 difference.

That’s still a great price for a curved ultrawide with these specs, too. It was only back in mid-2020 I myself spent £500 on the AOC CU34G2X, also a curved ultrawide but with a slower 144Hz refresh rate – and let me tell you now, the response times on that screen were nowhere near as good as they are with the CU34G4Z!

Specification:

• Screen size (inch): 34
• Screen size (cm): 86.4
• Flat / Curved: Curved
• Curvature radius: 1500R
• Panel treatment: Antiglare (AG)
• Pixels per inch: 109
• Panel resolution: 3440×1440
• Resolution name: WQHD
• Aspect ratio: 21:9
• Panel type: Fast VA
• Backlight type: WLED
• Max refresh rate: 240 Hz
• Response time (GtG): 1 ms
• Response time (MPRT): 0.3 ms
• Static contrast ratio: 2500:1
• Viewing angle (CR10): 178/178
• Display colours: 1.07 Billion
• Brightness in nits: 450 cd/m²
• Sync technology (VRR): Adaptive Sync
• Sync range: 48–240
• Colour space (sRGB) CIE 1976 %: 130.3
• Colour space (DCI-P3) CIE 1976 %: 94
• Colour space (Adobe RGB) CIE 1976 %: 88.7
• Flicker-free: Flicker Free
• Bezel type (front): 3-sided frameless
• Bezel colour (front): Black
• Bezel finishing (front): Matt
• Cabinet colour (backside): Black, Red
• Cabinet finishing (backside): Matt
• Removable stand: ✓
• Kensington lock: ✓
• VESA wallmount: 100×100
• Tilt: ­3.5° ±1.5° ~ 21.5° ±1.5°
• Height adjust (mm): 130 mm
• Swivel: ­20° ±2° ~ 20° ±2°
• HDMI: HDMI 2.1 x 2
• DisplayPort: DisplayPort 1.4 x 1
• USB hub: ✓
• USB generation: USB 3.2 (Gen 1)
• USB type downstream: 2
• Audio output: Headphone out (3.5mm)
• Warranty period: 3 years

Firmware tested: V1.03

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