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27-inch QD-OLED gaming monitor with glossy cabinet

AOC Monitors

AOC Monitors Q27GAZD 27" QD-OLED QHD 240Hz 0.03ms gaming monitor

SKU CH-4H1C-9QK0Z

A 27-inch QD-OLED panel delivers 2560 x 1440 resolution at 240 Hz with a 0.03 ms response time and HDR400 True Black certification

  • Screen size27 in (68.6 cm)
  • Display resolution2560 × 1440 (2K)
  • Refresh frequency240 Hz
  • Panel typeQD-OLED
  • Pixel response time0.03 ms
  • Display formatQD OLED
  • QD-OLED panel covers 147.6% sRGB and 110.2% DCI-P3 for vivid colour accuracy
  • 240Hz refresh rate and 0.03ms GtG response time eliminate motion blur in fast scenes
  • HDR400 True Black certification delivers deep blacks and bright highlights for realistic contrast
  • 27-inch QHD 2560x1440 resolution provides sharp detail across a 16:9 aspect ratio
  • Adaptive-Sync with FreeSync and G-Sync compatibility removes tearing and stutter during gameplay

27-inch QD-OLED gaming monitor

The 27-inch QD-OLED panel delivers QHD resolution at 2560 x 1440 with a 16:9 aspect ratio. A 240Hz refresh rate and 0.03ms GtG response time target competitive gamers who need minimal motion blur. Adaptive-Sync compatibility with both FreeSync and G-Sync Compatible certification keeps frames tear-free across supported GPUs. The glossy cabinet finish matches the vibrant panel output.

Interface bandwidth and console limits

DisplayPort and HDMI inputs carry the 240Hz signal at QHD, but the HDMI implementation determines whether consoles can reach the full refresh rate. HDR400 True Black certification guarantees a baseline brightness of 400 nits for HDR content, yet sustained full-screen brightness will remain lower than peak highlights. Buyers who need higher sustained HDR luminance or 4K resolution should look elsewhere.

0.03ms GtG response time

The 0.03ms gray-to-gray figure is the single spec that separates this panel from slower OLED and LCD alternatives. It defines how cleanly fast motion resolves without overshoot or inverse ghosting. If your priority is absolute motion clarity at 240Hz, this number confirms the monitor meets that threshold.

How it compares

Measured against everything we stock in Monitors for Gamers, at today’s prices. Recalculated every night.

Price $441.99
Pricier than about 81% of the 839 comparable items (median $189.99).
Screen size 27 in (68.6 cm)
Typical for this category: the median of 814 items is 27 in.
Refresh frequency 240 Hz
Higher than about 70% of the 735 comparable items (median 180 Hz).

Specifications

Product
Brand nameAOC
Case colorGlossy
Display
Screen size27 in (68.6 cm)
Display resolution2560 × 1440 (2K)
Refresh frequency240 Hz
Panel typeQD-OLED
Pixel response time0.03 ms
Display formatQD OLED
Variable refresh rateFreeSync & G-Sync Compatible
Highest resolution2560 × 1440
Screen ratio16:9
Horizontal scan rate240 Hz
Ports & slots
Connection typesHDMI, DisplayPort
HDMI portsYes
Video connectors1 x DisplayPort

Questions about this item

Should I pick the 27 inch QHD model or wait for a larger size?

This model is only offered in a 27 inch QHD configuration with 2560 by 1440 resolution and a 16 by 9 aspect ratio, so there is no alternative capacity or size to choose from.

How does the 240Hz refresh rate feel in actual gameplay?

A 240Hz panel redraws the image 240 times every second, which keeps fast motion sharp and makes mouse movement feel immediate in competitive shooters and racing titles.

What does the HDMI connection limit compared with DisplayPort?

The monitor provides one DisplayPort and HDMI ports; the single DisplayPort link is the only path guaranteed to deliver the full 240Hz at 2560 by 1440, while HDMI may cap at a lower refresh rate depending on the source device.

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