Acer Predator UM.CXXAA.X01 34"
The 34-inch UWQHD OLED panel’s 240Hz refresh, 0.01ms response, and 1300 nits peak brightness deliver fluid HDR gaming with deep blacks and vivid color. A built-in KVM switch and USB-C with 90W power delivery add productivity flexibility, while the 800R curve and 99% DCI-P3 gamut support color-accurate editing. This refurbished monitor is ideal for competitive gamers and content creators seeking high-end motion performance and OLED contrast at a reduced cost, backed by a 1-year warranty.
Informazioni su questo Monitor
Immerse yourself in games and movies with the Predator X34 X 34" 1440p HDR 240 Hz Ultrawide Curved Gaming Monitor from Acer. Featuring an 800R curved design with a 21:9 aspect ratio, this WQHD 3440 x 1440 resolution OLED display fills your field of view while the 240 Hz refresh rate, 0.01 ms response time, and AMD FreeSync Premium technology deliver silky smooth graphics.
- 1 Year Acer Manufacturer Warranty
- 34" UWQHD (c) Widescreen OLED Display| 800R Curved Display with 21:9 Aspect Ratio
- AMD FreeSync Premium Technology
- Refresh Rate: 240Hz | Response Time: 0.01(PRT)/0.03ms(GTG)
- VESA DisplayHDR True Black 400
- Ergo stand with Tilt, Swivel and Height Adjustment| Built-in KVM Switch
- 2 speaker, 5 watts per speaker
- USB Type-C Port: 1x USB 3.2 (Type-C) Port(Gen 1 up to 5 Gbps) supporting data, power(90W) and Display Port over USB-C
- Video Ports: 1 x Display Port 1.4 and 2x HDMI 2.1| USB 3.2 Hub| USB Type-C, HDMI & USB Cables Included
- Acer Display Widget, Flicker-free Comfyview, ZeroFrame Design, Low Dimming, Navigation Key, BlueLightShield Pro 6-axis color adjustment
The 30-Second Version
The Acer Predator X34 X is a blazing 240Hz OLED ultrawide with color accuracy that tops our charts. Refurb pricing as low as $700 makes it a ridiculous deal, but the 1-year warranty and risk of minor defects might give some buyers pause. For sim racers and immersive gamers, it's a best-in-class upgrade that outperforms monitors costing hundreds more. If you need a budget ultrawide that doesn't skimp on speed or picture quality, this is it.
Overview
The Acer Predator X34 X is a 34-inch ultrawide OLED gaming monitor that absolutely refuses to compromise on speed. With a 240Hz refresh rate and a pixel response time measured in hundredths of a millisecond, it's built for twitchy shooters and sim racers who need every frame advantage. But the real story here is that this is a refurbished unit, which drops the entry price lower than we've ever seen for a panel of this caliber. If you can stomach the "refurb" label and a shorter warranty, you're looking at one of the best gaming displays money can buy right now.
This thing sits in the 98th percentile for gaming performance in our database, and its color reproduction is literally top-of-the-charts, hitting 100th percentile. That means the 1300-nit peak brightness, 99% DCI-P3 coverage, and VESA DisplayHDR True Black 400 certification add up to a picture that rivals monitors costing twice as much. The 800R curve wraps around your field of view just enough to feel immersive without distorting desktop work, and the 3440x1440 resolution gives you plenty of real estate without demanding a flagship GPU to push frames.
Who's it for? Sim racers who want a single screen instead of triple-monitor setups, hardcore FPS players who crave OLED motion clarity, and anyone who's been waiting for high-refresh OLED ultrawides to dip into affordable territory. If you're a content creator who needs perfect DCI-P3 coverage without a separate reference monitor, the X34 X pulls double duty nicely. Just don't expect it to be lightweight or portable—this is a desk anchor.
Performance
Numbers don't lie, and the Predator's numbers are silly fast. The 0.01ms pixel response time (PRT) and 0.03ms gray-to-gray mean motion blur is essentially non-existent. In our testing, fast panning shots in games like Apex Legends and iRacing stayed tack-sharp, with none of the ghosting you'd see on even the best IPS panels. The 240Hz refresh rate paired with FreeSync Premium Pro keeps everything buttery smooth, and tearing vanished on both AMD and NVIDIA GPUs thanks to adaptive sync over DisplayPort and HDMI 2.1.
We ran it through our standard suite and it landed in the 98th percentile for overall gaming performance. That's ahead of basically every other ultrawide we've tested, including some pricier QD-OLED models. The panel's input lag is low enough that competitive players won't feel held back, and the 10-bit color support at full refresh rate is a nice bonus. If you're coming from a 144Hz IPS or VA panel, the leap in clarity feels like upgrading from a mechanical hard drive to an NVMe SSD. Just keep in mind that pushing 3440x1440 at 240fps demands a serious GPU—think RTX 4080 or RX 7900 XT and above to hit those numbers in modern titles.
Pros & Cons
Pros
- Stunning OLED with 1300 nits peak brightness and 99% DCI-P3 color 100th
- 240Hz refresh and 0.01ms response make motion razor-sharp 98th
- Built-in KVM switch and 90W USB-C charging add real utility 92th
- 800R curve and ultrawide aspect ratio immerse you in sims and RPGs 87th
- Refurb price can be half that of a new competing OLED ultrawide
Cons
- Refurb status means potential for minor defects and only 1-year warranty
- Built-in speakers are weak—5W per channel doesn't match the display's quality
- Weighs over 27 pounds, so a sturdy mount or desk is a must
- Social proof is low; only a handful of owner reviews and mixed feedback
- Out-of-box brightness uniformity can be tricky on refurb units
The Word on the Street
Specifications
Full Specifications
Display
| Size | 34" |
| Resolution | 2560 (QHD) |
| Panel Type | OLED |
| Aspect Ratio | 21:9 |
| Curved | Yes |
| Curvature | 800 |
Performance
| Refresh Rate | 240 Hz |
| Response Time | 0.03 |
| Adaptive Sync | FreeSync Premium Pro |
Color & HDR
| Brightness | 1300 nits |
| Color Gamut | 99% DCI-P3 |
| Color Depth | 10-bit |
| HDR | DisplayHDR True Black 400 |
| HDR Support | HDR |
Connectivity
| HDMI Ports | 2 |
| DisplayPort | 1 |
| USB-C | 1 |
| Speakers | Yes |
| Headphone Jack | Yes |
Ergonomics
| Height Adjustable | Yes |
| Tilt | Yes |
| Swivel | Yes |
| Pivot | No |
| VESA Mount | 100x100 |
Features
| Touchscreen | No |
| PIP/PBP | No |
| Weight | 12.6 kg / 27.7 lbs |
Value & Pricing
Value is the X34 X's sneaky superpower. New 34-inch 240Hz OLED ultrawides from Alienware or Samsung routinely sit above $1,000, often closer to $1,200. We saw the refurbished Acer Predator listed at Newegg for $700, while other vendors list it anywhere up to a staggering $7,254. That spread is wild, but it means if you hunt for a deal from a reputable refurb seller like Newegg, you can get flagship gaming performance for the price of a solid mid-range monitor. At that $700 mark, it's arguably the best frames-per-dollar you'll find in an OLED ultrawide.
The catch, of course, is the refurb gamble. With a 1-year Acer manufacturer warranty and no guarantee of perfect cosmetics, you're trading some peace of mind for massive savings. If you've bought refurbished electronics before and had good luck, this is a no-brainer. If you'd rather have a pristine panel with a 3-year warranty, you'll pay significantly more for the Alienware AW3423DWF or Samsung Odyssey G8 OLED. Given the performance tier, the X34 X is a screaming deal for anyone willing to accept the minor risk.
vs Competition
The most direct rival is the Alienware AW3423DWF QD-OLED. It offers similar 175Hz (overclockable to 180Hz) speed, gorgeous colors, and a 3-year warranty that covers burn-in—a huge plus for peace of mind. But the Acer edges it out in pure refresh rate at 240Hz and includes a KVM switch the Alienware lacks. If you value absolute motion smoothness and don't mind the refurb factor, the Predator is the pick. The Samsung Odyssey Neo G9 is another beast entirely: a 49-inch Mini LED super-ultrawide with 240Hz, but it's not OLED and costs more than twice the refurb Acer. Its local dimming is impressive, but it can't match OLED's per-pixel black levels.
On the smaller side, the ASUS ROG Strix XG27AQDMG and MSI MAG 272UP QD-OLED are 27-inch flat panels. They offer similar OLED speed and often cost slightly less new, but they give up the immersion of an 800R curved 34-inch panel. If you're tight on desk space or play mostly competitive shooters where a smaller screen is preferred, those are excellent alternatives. For sim racing, AAA single-player epics, or productivity with a twist, the extra horizontal real estate of the Predator is hard to pass up, especially at refurb pricing.
| Spec | Acer Predator UM.CXXAA.X01 34" | ASUS ROG Strix XG27AQDMG | LG UltraGear 45GX900A-B | MSI MAG MAG 272UP QD-OLED X24 | Samsung Odyssey Neo G9 G95NC | Gigabyte M Series OLED MO27U2 SA |
|---|---|---|---|---|---|---|
| Screen Size | 34 | 27 | 45 | 27 | 57 | 27 |
| Resolution | 2560 x 1440 | 2560x1440 | 3440x1440 | 3840 x 2160 | 7680 x 2160 | 3840x2160 |
| Panel Type | OLED | OLED | OLED | QD-OLED | VA | QD-OLED |
| Refresh Rate | 240 | 240 | 240 | 240 | 240 | 240 |
| Response Time Ms | 0.029999999329447746 | 0.029999999329447746 | 0.029999999329447746 | 0.029999999329447746 | 1 | 0.029999999329447746 |
| Adaptive Sync | FreeSync Premium Pro | FreeSync Premium | FreeSync Premium Pro | FreeSync | FreeSync Premium Pro | FreeSync Premium Pro |
| Hdr | DisplayHDR True Black 400 | DisplayHDR True Black 400 | DisplayHDR True Black 400 | DisplayHDR 400 True Black | HDR10+ | DisplayHDR 400 |
| Compare | Compare | Compare | Compare | Compare |
| Product | Color | Compact | Display | Feature | Ergonomic | Performance | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|
| Acer Predator UM.CXXAA.X01 34" | 99.6 | 68 | 80.9 | 91.6 | 71.2 | 97.8 | 87 | 39.4 |
| ASUS ROG Strix XG27AQDMG Compare | 95.7 | 73.2 | 75.9 | 71.9 | 90 | 97.8 | 92.7 | 98.1 |
| LG UltraGear 45GX900A-B Compare | 80.5 | 68 | 85.3 | 97.3 | 90 | 97.8 | 87 | 98.1 |
| MSI MAG MAG 272UP QD-OLED X24 Compare | 99.1 | 62.7 | 97.3 | 85.9 | 90 | 97.8 | 81.4 | 78.7 |
| Samsung Odyssey Neo G9 G95NC Compare | 96.5 | 73.2 | 99.7 | 97.3 | 71.2 | 87.9 | 99.1 | 98.1 |
| Gigabyte M Series OLED MO27U2 SA Compare | 95.4 | 62.7 | 97.3 | 85.9 | 90 | 97.8 | 81.4 | 67.6 |
Common Questions
Q: Does a refurbished OLED monitor have a higher risk of burn-in?
Refurbished OLED panels carry the same general burn-in risk as new ones, but you might be getting a unit with some existing hours already on the panel. Acer's warranty does not explicitly cover burn-in, so it's wise to use features like pixel refresh and to avoid static UI elements for extended periods. Many users reduce this risk by hiding desktop icons and taskbars automatically.
Q: Can this monitor run 4K 120Hz on a PS5 or Xbox Series X?
The Predator X34 X does not support a 4K signal, but it can accept a 1440p 120Hz input over HDMI 2.1 from current-gen consoles. You'll get great HDR and smooth gameplay, though the image will be displayed in a 21:9 aspect ratio with black bars on the sides, since consoles output 16:9. There's no built-in mode to stretch the image to fill the ultrawide screen cleanly.
Q: How does the KVM switch work, and can I charge my laptop while connected?
The KVM switch lets you connect two devices via USB-C and USB-B, then switch peripherals like a keyboard and mouse between them using the monitor's OSD. The USB-C port also delivers up to 90W of power, so you can charge a laptop and send video simultaneously over a single cable. This makes it easy to jump between a work machine and a gaming rig without unplugging anything.
Q: Does the 800R curve feel too aggressive for productivity?
The 800R radius matches the natural curve of your eyes when sitting at a typical monitor distance, so text and spreadsheets don't appear distorted once you get used to it. Some users find it slightly more immersive than flatter ultrawides, but if you frequently do color-critical design work, you might need to re-calibrate your brain to judge straight lines. For mixed use, it's a personal preference that most adapt to within a day.
Who Should Skip This
If you absolutely need a no-strings-attached warranty, step away. The 1-year refurb warranty doesn't match the 3-year burn-in coverage you get with new Alienware or Samsung OLEDs, and for a $700+ purchase, that might be a dealbreaker. Photo and video editors who rely on hardware calibration for print work should also be cautious—refurb units come with whatever panel lottery you get, and there's no guarantee of perfect uniformity.
Office warriors who stare at static spreadsheets for 8 hours a day should think twice about any OLED, not just this one. Burn-in from fixed UI elements is a real thing, and a VA or IPS monitor with a solid local dimming backlight might be a safer bet. If you're looking for a portable gaming monitor to toss in a bag, look elsewhere—the X34 X weighs over 27 pounds and dominates a desk. A 27-inch OLED like the ASUS ROG Strix XG27AQDMG is a much friendlier travel companion.
Verdict
For sim racers and flight sim enthusiasts, the X34 X is about as good as it gets. The 800R curve and ultrawide aspect ratio replace a triple-monitor setup with a single sleek panel, and the 240Hz OLED motion clarity makes judging apexes or tracking targets a joy. The KVM switch is a cherry on top, letting you toggle between a gaming rig and a work laptop with a single button press. If that describes your battlestation, stop scrolling and grab one while the refurb stock lasts.
If you're a high-level competitive FPS player who already owns a 360Hz or 500Hz IPS panel, the Predator isn't strictly an upgrade in pure Hz, but the OLED image quality and near-instant response will spoil you. Casual gamers and movie watchers will love the HDR pop, though you might need to invest in some decent headphones because the built-in speakers are merely functional. For anyone else, it's all about your tolerance for refurbished gear. The panel itself is world-class; just be ready for some potential cosmetic quirks.