BenQ MOBIUZ BenQ MOBIUZ EX321UZ 31.5" 4K HDR 240 Hz OLED Review
The BenQ MOBIUZ EX321UZ combines a breathtaking 4K OLED picture with a 240Hz refresh rate. It's a nearly perfect all-purpose screen, but that versatility comes at a premium price.
The 30-Second Version
The BenQ MOBIUZ EX321UZ delivers a stunning 4K OLED picture with a super-smooth 240Hz refresh rate, all in a sensible 16:9 format. It's a fantastic all-rounder, but the $1200 price tag and single USB-C port give us pause. Worth it for those who want the best of both worlds.
Overview
The BenQ MOBIUZ EX321UZ is a 4K OLED monitor that wants to do it all. It packs a 31.5-inch OLED panel with a 240Hz refresh rate into a surprisingly sensible 16:9 shape, promising both stunning visuals and high-speed gaming.
With scores in the high 80s for gaming, entertainment, and professional use, it's clearly a jack-of-all-trades. But at $1200, it's also asking you to pay for that versatility. We dug into the specs to see if it's worth the premium.
Performance
The picture quality is the star here. That OLED panel lands in the 98th percentile for display quality, and the color performance is even better at the 99th. You get perfect blacks, 1000 nits of peak HDR brightness, and a 0.03ms response time that makes motion look incredibly clean. The 240Hz refresh rate is smooth, but our data shows its overall performance score is 83rd percentile, which is great but not class-leading. The single USB-C port with 90W charging is handy, but the connectivity score sits at the 77th percentile, so you might need a dock for a serious setup.
Pros & Cons
Pros
- OLED picture quality is stunning, with perfect blacks and vibrant HDR. 99th
- 240Hz refresh rate makes 4K gaming feel incredibly smooth. 98th
- Versatile stand with height, tilt, and swivel adjustments. 88th
- Includes a remote control for easy settings changes. 84th
Cons
- Only one USB-C port, which feels limited for a premium monitor.
- It's heavy at over 8kg, so mounting it takes some effort.
- No built-in speakers, so you'll need external audio.
- The price is steep compared to some 4K OLED competitors.
Specifications
Full Specifications
Display
| Size | 31.5" |
| Resolution | 3840 (4K UHD) |
| Panel Type | OLED |
| Aspect Ratio | 16:9 |
| Curved | No |
Performance
| Refresh Rate | 240 Hz |
| Adaptive Sync | FreeSync Premium Pro |
Color & HDR
| Brightness | 1000 nits |
| Color Gamut | 1.07 Billion Colors |
| HDR | HDR |
| HDR Support | HDR |
Connectivity
| USB-C | 1 |
| Speakers | No |
Ergonomics
| Height Adjustable | Yes |
| Tilt | Yes |
| Swivel | Yes |
| Pivot | No |
| VESA Mount | 100x100 |
Features
| Touchscreen | No |
| Weight | 8.3 kg / 18.3 lbs |
Value & Pricing
At $1200, this is a serious investment. You're paying for that top-tier OLED panel and the high refresh rate in one package. If you want the best possible picture for movies and games on a single screen, the value is there. But if you're purely a competitive gazer who'd trade some visual fidelity for even higher frame rates, your money might go further elsewhere.
vs Competition
It's up against some heavy hitters. The ASUS ROG Swift 32" QD-OLED is a direct rival, often with similar specs but sometimes a higher price. The Samsung Odyssey Neo G9 offers a wild ultrawide experience, but it's a completely different form factor. The MSI MPG 32" is another 4K 240Hz OLED option that often undercuts this on price. The BenQ's strength is its balance; it doesn't have the curve of the Samsung or the sheer gaming focus of the ASUS, but it's a fantastic all-rounder.
| Spec | BenQ MOBIUZ BenQ MOBIUZ EX321UZ 31.5" 4K HDR 240 Hz OLED | Samsung Odyssey Samsung 57" Odyssey Neo G9 Curved Gaming Computer | MSI MPG MSI 32" UHD 4K 240Hz with AMD FreeSync Premium Pro | ASUS ProArt ASUS ProArt Display OLED PA32UCDM 31.5" 4K HDR 240 | LG UltraGear LG UltraGear 45" WUHD DUAL MODE 4K 165Hz FHD 330Hz | Dell UltraSharp Dell UltraSharp 27" 4K HDR 120 Hz Monitor with |
|---|---|---|---|---|---|---|
| Screen Size | 31.5 | 57 | 32 | 31.5 | 45 | 27 |
| Resolution | 3840 x 2160 | 7680 x 2160 | 3840 x 2160 | 3840 x 2160 | 5120 x 2160 | 3840 x 2160 |
| Panel Type | OLED | VA | OLED | OLED | OLED | IPS |
| Refresh Rate | 240 | 240 | 240 | 240 | 165 | 120 |
| Response Time Ms | — | 1 | — | 0.10000000149011612 | — | 5 |
| Adaptive Sync | FreeSync Premium Pro | FreeSync Premium Pro | G-Sync Compatible | Adaptive-Sync | G-Sync Compatible | — |
| Hdr | HDR | HDR10+ | HDR | Dolby Vision | HDR10 | HDR |
Common Questions
Q: Does this monitor have any burn-in protection?
While not explicitly listed in the specs, BenQ's MOBIUZ OLED monitors typically include pixel shifting and screen saver features to help mitigate burn-in risk, which is standard for OLED panels.
Q: Can I use this for console gaming?
Absolutely. The HDMI 2.1 ports support 4K 120Hz from a PS5 or Xbox Series X, and the FreeSync Premium Pro helps keep gameplay smooth.
Q: Is the USB-C port enough for a laptop docking setup?
It provides 90W of power delivery, which is enough for most laptops, but with only one USB-C port, you'll likely need a separate hub or dock to connect multiple peripherals directly to the monitor.
Who Should Skip This
Skip this if you're on a tight budget or need multiple USB-C ports for a clean desk setup. Also, if you're a hardcore competitive FPS player who prioritizes ultra-high frame rates over visual splendor, a faster 1080p or 1440p panel would be a smarter buy.
Verdict
Buy this if you want one monitor to rule them all for high-end gaming, movie watching, and even some content work. The OLED picture is breathtaking, and 240Hz at 4K is a treat. It's for the person who refuses to compromise on either visual fidelity or smoothness.