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A flat 27 inch black QD-OLED gaming monitor on a simple stand

AOC Monitors

AOC Monitors Q27G41ZDF 27" QD-OLED QHD 240Hz gaming monitor

SKU CH-K790-MQ8TS

A 27 inch QD-OLED gaming display with a 240Hz refresh rate, 0.03 ms response time and 2560 x 1440 resolution

  • Screen size27 in (68.6 cm)
  • Display resolution2560 × 1440 (2K)
  • Refresh frequency240 Hz
  • Panel typeQD-OLED
  • Pixel response time0.03 ms
  • Display formatQHD
  • QHD 2560 x 1440 resolution delivers sharp detail
  • 240 Hz refresh rate provides ultra-smooth motion
  • 03 ms response time eliminates ghosting
  • QD-OLED panel achieves 1,500,000:1 contrast
  • G-Sync adaptive sync prevents screen tearing

27-inch QD-OLED gaming display

The AOC Q27G41ZDF is a 27-inch QD-OLED gaming monitor built for competitive players who value motion clarity and deep contrast. Its 2560 x 1440 resolution and 240 Hz refresh rate suit fast-paced titles on Windows, Mac or Linux systems. The anti-glare surface and wide 178-degree viewing angles keep the image consistent in varied lighting.

0.03 ms response time

A 0.03 ms grey-to-grey response time is the specification that determines whether this panel matches your need for minimal ghosting. Combined with NVIDIA G-Sync adaptive sync, it aligns frame delivery to the GPU output for smooth motion. The single DisplayPort 1.4 and two HDMI 1.4 ports provide the necessary bandwidth for the native resolution at full refresh.

Sustained 240 Hz with OLED contrast

Under continuous load the 1,500,000:1 contrast ratio and 200 cd/m² brightness remain stable because each pixel emits its own light. The QD-OLED layer maintains colour volume without a backlight that can dim over long sessions. VESA 100 x 100 mounting lets you position the cabinet for extended comfort during marathon play.

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
Case colorBlack
Display
Screen size27 in (68.6 cm)
Display resolution2560 × 1440 (2K)
Refresh frequency240 Hz
Panel typeQD-OLED
Pixel response time0.03 ms
Display formatQHD
Variable refresh rateNVIDIA G-Sync
Highest resolution2560 × 1440
Horizontal scan rate240 Hz
Ports & slots
Connection typesHDMI, DisplayPort
HDMI ports2 x HDMI 1.4
DisplayPort connectors1 x DisplayPort 1.4
Video connectors1 x DisplayPort 1.4

Questions about this item

What does the 240 Hz refresh rate mean once the monitor is in a real machine?

It allows up to 240 frames per second to be shown, so fast motion stays clear and input feels immediate in supported games.

What does the DisplayPort 1.4 connection cap in practice?

The single DisplayPort 1.4 port carries the full 2560 x 1440 resolution at 240 Hz with G-Sync active.

What does the monitor physically need to fit or mount on a VESA arm?

It uses a 100 mm x 100 mm VESA pattern and the cabinet is black; the stand does not adjust height.

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