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BenQ MOBIUZ EX321UZ · Photo source
BenQ · MOBIUZ
MOBIUZ EX321UZ
BenQ's 31.5-inch 4K QD-OLED gaming monitor with a 240Hz refresh rate, DisplayPort 2.1 at 80 Gbps, two HDMI 2.1 ports (one with eARC) and 90W USB-C, for PC and console players who want a large, high-resolution OLED screen.
- Size
- 31.5″
- Resolution
- 3840 × 2160
- PPI
- 140
- Panel
- QD-OLED
- Refresh
- 240 Hz
- Brightness
- 300 nits
- HDR
- True Black 500
- USB-C power
- 90 W
Specifications
Report a wrong or missing specDisplay
- Screen size
- 31.5″
- Resolution
- 3840 × 2160 (4K)
- Sharpness
- 140 pixels per inch
- Panel
- QD-OLED (4th-gen QD-OLED)
- Refresh rate
- 240 Hz
- Response time (grey to grey)
- 0.03 ms
- Brightness (typical)
- 300 nits
- HDR peak brightness
- 1,000 nits
- HDR certification
- DisplayHDR True Black 500
- Contrast ratio
- 1,500,000:1
- Colour range
- 99% DCI-P3
- DCI-P3 coverage
- 99%
- Screen finish
- Glossy
- Shape
- Flat
- Adaptive sync
- FreeSync Premium Pro
- Colour depth
- 1.07 billion colours
- Colour accuracy
- Delta E < 2
- Colour modes
- Cinema HDR, Fantasy HDR, Realistic HDR, Sci-fi HDR, Display P3, sRGB, Custom, DisplayHDR, Cinema, Sci-fi, Realistic, Fantasy, Gamer 1, Gamer 2, Gamer 3
- Motion blur reduction
- Blur Reduction
- Viewing angles
- 178° / 178° (CR ≥ 10)
- Eye care
- Flicker-free, Low Blue Light, Color Weakness
- Burn-in protection
- Graphene film and aluminium-plated heat dissipation; Pixel Refresh, Pixel Shift, Idle Dimmer and Logo Dimming
- Calibration
- Factory calibration report
Connections
- Video inputs
- 2 × HDMI 2.1, DisplayPort 2.1 UHBR20, USB-C
- USB-C charging
- Up to 90 W
- USB ports
- 2 × USB-A, USB-C
- KVM switch
- Yes
- Ethernet
- No
- HDMI detail
- 2 × HDMI 2.1, one with eARC; ALLM, VRR and CEC; HDCP 2.3
- USB-C detail
- DisplayPort Alt Mode, data and 90 W power delivery
- USB hub detail
- USB 3.2 Gen 1 (5 Gbps); 2 × USB-A downstream (4.5 W charging), 1 × USB-C downstream (7.5 W charging), 1 × USB-C upstream (data only)
- Audio out
- Headphone jack
Design
- Stand adjusts
- Height, tilt, swivel
- VESA mount
- Yes
- Weight with stand
- 8.29 kg
- Height adjustment
- 100 mm
- Tilt
- -5° to 15°
- Swivel
- 15° / 15° (left / right)
- VESA pattern
- 100 × 100 mm
- Size with stand
- 598.14 × 718.88 × 223.48 mm (H × W × D)
- Size without stand
- 418.14 × 718.88 × 82.93 mm (H × W × D)
- Weight without stand
- 5.99 kg
Power and support
- Power use
- 45 W normal, 300 W max, < 0.5 W sleep
- Power supply
- Built-in, 100–240 V
- Software
- Color Shuttle, Display Quickit
- Certifications
- TÜV Flicker-free and Low Blue Light (Hardware Solution)
- In the box
- Remote control, DP 2.1 and HDMI 2.1 cables (may vary by region), calibration report, cleaning cloth, quick start guide, safety instructions
Pros and cons
Pros
- DisplayPort 2.1 at 80 Gbps (UHBR20), two HDMI 2.1 ports and a USB-C video input with 90W laptop charging
- 4th-gen QD-OLED panel with VESA DisplayHDR True Black 500 and a 1,000-nit HDR peak
- Built-in KVM switch, HDMI eARC for a soundbar, and a remote control in the box
Cons
- Glossy screen reflects room light
- Stand offers 100 mm of height adjustment and no pivot
- 4K on 31.5 inches gives 140 ppi, less sharp than a 27-inch 4K monitor (163 ppi)
Closest rivals
Model | Size | Resolution | PPI | Panel | Refresh | Brightness | HDR | USB-C power | Released |
|---|---|---|---|---|---|---|---|---|---|
| 31.5″ | 3840 × 2160 | 140 | QD-OLED | 240 Hz | 300 nits | True Black 500 | 65 W | Apr 2026 | |
| 31.5″ | 3840 × 2160 | 140 | QD-OLED | 240 Hz | 250 nits | True Black 400 | 90 W | Feb 2024 | |
| 31.5″ | 3840 × 2160 | 140 | QD-OLED | 240 Hz | 250 nits | True Black 400 | 15 W | Nov 2025 |
Sources
- benq.eu/en-uk/monitor/gaming/ex321uz/spec.html
- benq.eu/en-uk/monitor/gaming/ex321uz.html
- benq.eu/en-uk/monitor/gaming/ex321uz/buy.html
- benq.com/en-us/monitor/gaming/ex321uz/spec.html
- benq.com/en-us/monitor/gaming/ex321uz.html
- benq.com/en-us/news/monitor/mobiuz-oled-series-press-release.html
- benq.eu/en-eu/news/products/benq-launches-mobiuz-ex-series-world-s-first-game-a…
- benq.com/en-in/news/products/mobiuz-ex321uz-launch.html
Photo: image.benq.com
- BenQ MOBIUZ EX321UZ, three-quarter right front with physical display: image.benq.com/is/image/benqco/09-ex321uz-right45-1
- BenQ MOBIUZ EX321UZ, front with physical display: image.benq.com/is/image/benqco/01-ex321uz-front-1
- BenQ MOBIUZ EX321UZ, rear with stand: image.benq.com/is/image/benqco/03-ex321uz-back-1
- BenQ MOBIUZ EX321UZ, front with alternative stand orientation: image.benq.com/is/image/benqco/04-ex321uz-front-stand-1
- BenQ MOBIUZ EX321UZ, front with lowered stand: image.benq.com/is/image/benqco/10-ex321uz-front-low-1
- BenQ MOBIUZ EX321UZ, supplied remote control: image.benq.com/is/image/benqco/11-ex321uz-controller-1
- BenQ MOBIUZ EX321UZ, three-quarter rear with stand: image.benq.com/is/image/benqco/12-ex321uz-back45-1
- BenQ MOBIUZ EX321UZ, right-side profile with stand: image.benq.com/is/image/benqco/13-ex321uz-rightside-1
- BenQ MOBIUZ EX321UZ, underside connections close-up: image.benq.com/is/image/benqco/14-ex321uz-connetcivity-1