Buying Guide
The Best Curved Ultrawide Monitor
From the CU34G4H to the AW3425DW: three monitors ranked on refresh rate and screen size, with who should skip each one.
By The PC Journal editorial team
11 min read3 products evaluated
Curved screens matter most when you sit close to a large or wide panel. Every monitor here is curved and is an ultrawide, ordered by refresh rate.
We sorted these picks by refresh rate, resolution and size, working from the makers' own data; nothing here was tested in-house, and if a maker skips adaptive sync, the guide says so.
Quick Picks
Our 3 recommendations at a glance. Tap a pick for the full verdict.
Fastest Refresh
Alienware 34 QD-OLED AW3425DW
The highest refresh rate here (240Hz).
Best for: Competitive shooters where motion clarity matters most.
Our take Check price for Alienware 34 QD-OLED AW3425DW (opens in a new tab)
Lowest Price Here
AOC CU34G4H Curved Ultrawide
A lower price than the AG493UCX and the rest when we checked.
Best for: Keeping the budget tight.
Our take Check price for AOC CU34G4H Curved Ultrawide (opens in a new tab)
Largest Screen Size
AOC AGON AG493UCX 49-inch
The largest screen size here (49 inches).
Best for: Buyers who put screen size first.
Our take Check price for AOC AGON AG493UCX 49-inch (opens in a new tab)
| Pick | Why it’s here | Best for | Price |
|---|---|---|---|
| The highest refresh rate here (240Hz). | Competitive shooters where motion clarity matters most. | Check price for Alienware 34 QD-OLED AW3425DW (opens in a new tab) |
| A lower price than the AG493UCX and the rest when we checked. | Keeping the budget tight. | Check price for AOC CU34G4H Curved Ultrawide (opens in a new tab) |
| The largest screen size here (49 inches). | Buyers who put screen size first. | Check price for AOC AGON AG493UCX 49-inch (opens in a new tab) |
Our Picks
Fastest Refresh1 of 3
Alienware 34 QD-OLED AW3425DW on Amazon (opens in a new tab)
Alienware's AW3425DW puts a 34.2-inch QD-OLED ultrawide at 240Hz with 99% DCI-P3 coverage.
Best for
- Competitive shooters where motion clarity matters most.
Skip if
- Worth skipping when oLED burn-in risk with static desktop element is a problem.
Why we like it
It pairs OLED contrast with a wide field of view. Its 240Hz refresh rate is the highest here; the CU34G4H comes next at 200Hz. On screen size it sits mid-pack at 34.2 inches: the AG493UCX comes in at 49 inches, and the CU34G4H comes in at 34 inches.
Like the CU34G4H, it has a 3440x1440 resolution, while the AG493UCX uses a 5120x1440 resolution. It is the only pick here with a QD-OLED panel; the CU34G4H has a VA panel instead. It is the only pick here with a DisplayHDR True Black 400; the CU34G4H has an HDR instead.
You also get 1000 nits peak HDR brightness. Leave the maker's pixel-refresh routines enabled and hide static taskbars to limit burn-in risk. It was the most expensive pick when we checked, so weigh what it adds over the AG493UCX.
Key dimensions & specs
- Refresh rate: 240Hz
- Resolution: 3440x1440
- Size: 34.2 inches
- Panel: QD-OLED
- Response: 0.03ms
- HDR: DisplayHDR True Black 400
- Color gamut: 99% DCI-P3
Pros
- a 240Hz refresh rate for fast motion
- a QD-OLED panel with per-pixel contrast
- DisplayHDR True Black 400 certification
- 99% DCI-P3 colour coverage
Cons
- OLED burn-in risk with static desktop elements
- Costs more than the CU34G4H at the time of writing
Lowest Price Here2 of 3
AOC CU34G4H Curved Ultrawide on Amazon (opens in a new tab)
AOC's CU34G4H is a 34-inch 3440x1440 VA ultrawide at 200Hz on a height, tilt and swivel stand.
Best for
- Keeping the budget tight.
Skip if
- Pass on it if a VA panel that can smear dark transition rules it out for your setup.
Why we like it
It is the lowest-priced ultrawide here at the time of writing. On refresh rate it sits mid-pack at 200Hz: the AW3425DW offers 240Hz, and the AG493UCX comes in at 120Hz. Its 34 inches screen size is the smallest in this group; the AG493UCX leads at 49 inches.
It shares a 3440x1440 resolution with the AW3425DW; the AG493UCX goes with a 5120x1440 resolution. Worth noting too: 200Hz for smoother motion than a 60Hz office screen. It also brings adaptive-Sync to reduce screen tearing. It cost the least of the 3 picks at the time of writing, with the AG493UCX the next step up.
Key dimensions & specs
- Refresh rate: 200Hz
- Resolution: 3440x1440
- Size: 34 inches
- Panel: VA
- Response: 0.3ms
- HDR: HDR
- Adaptive sync: Adaptive-Sync
- Stand: height, tilt and swivel
Pros
- 200Hz for smoother motion than a 60Hz office screen
- Adaptive-Sync to reduce screen tearing
- a stand with height, tilt and swivel
- 34-inch 1500R ultrawide
Cons
- a VA panel that can smear dark transitions
- Screen size trails the AG493UCX (49 inches)
Largest Screen Size3 of 3
AOC AGON AG493UCX 49-inch on Amazon (opens in a new tab)
AOC's AG493UCX is a 49-inch 5120x1440 VA screen at 120Hz with USB-C and DisplayHDR 400.
Best for
- Buyers who put screen size first.
Skip if
- Look at the others if this bothers you: a VA panel that can smear dark transitions.
Why we like it
It is the non-OLED super-ultrawide here. Its 120Hz refresh rate is the lowest in this group; the AW3425DW leads at 240Hz. On screen size it leads this guide at 49 inches, ahead of the AW3425DW (34.2 inches).
It is the only pick here with a 5120x1440 resolution; the AW3425DW has a 3440x1440 resolution instead. Like the CU34G4H, it has a VA panel, while the AW3425DW uses a QD-OLED panel. It is the only pick here with a DisplayHDR 400; the AW3425DW has a DisplayHDR True Black 400 instead.
It also comes with an 1800R 49-inch curve, USB-C docking and Dual QHD resolution. Its price falls between the CU34G4H and the AW3425DW, based on our last check. If refresh rate is your priority, the AW3425DW (240Hz) is the stronger choice.
Key dimensions & specs
- Refresh rate: 120Hz
- Resolution: 5120x1440
- Size: 49 inches
- Panel: VA
- Response: 1ms
- HDR: DisplayHDR 400
- Adaptive sync: Adaptive-Sync
- USB-C: Yes
Pros
- Adaptive-Sync to reduce screen tearing
- a USB-C input for laptops
- 1800R 49-inch curve
- USB-C docking
Cons
- a VA panel that can smear dark transitions
- Refresh rate trails the AW3425DW (240Hz)
- Costs more than the CU34G4H at the time of writing
How We Chose
Each pick was assessed across 4 criteria weighted for real-world use.
- What we compared
- We lined up three monitors on refresh rate, resolution, screen size and panel, using each maker's published specs. We did not test them in-house.
- The shared baseline
- All 3, from the AW3425DW to the AG493UCX, state refresh rate, resolution and screen size.
- Where the specs have gaps
- The AW3425DW gives no adaptive sync.
- Price range
- At our last check the picks ran from the CU34G4H ($150 to $250) to the AW3425DW ($500 to $1000).
What to Look for in a Curved Ultrawide Monitor
Key buying criteria so you get the right fit the first time.
Refresh rate
Here refresh rate runs from 120Hz on the AG493UCX to 240Hz on the AW3425DW. For less, the CU34G4H is the runner-up at 200Hz.
How much screen size you need
Here screen size runs from 34 inches on the CU34G4H to 49 inches on the AG493UCX. Start with the AG493UCX if screen size decides it.
Panel
The AW3425DW lists QD-OLED; the CU34G4H and the AG493UCX list VA.
Response
The AW3425DW lists 0.03ms; the CU34G4H lists 0.3ms; the AG493UCX lists 1ms. Rule out the mismatches before looking at price.
Features beyond the spec table
The AW3425DW: 1000 nits peak HDR brightness. The CU34G4H: 200Hz at 3440x1440. The AG493UCX: USB-C docking.
How to Choose a Curved Ultrawide Monitor
By priority
| Priority | Consider | Why |
|---|---|---|
| Competitive shooters where motion clarity matters most | AW3425DW | The highest refresh rate here (240Hz) |
| Keeping the budget tight | CU34G4H | A lower price than the AG493UCX and the rest when we checked |
| Buyers who put screen size first | AG493UCX | The largest screen size here (49 inches) |
Scroll sideways to see every column.
Key specs side by side
The AW3425DW leads on refresh rate at 240Hz, ahead of the CU34G4H at 200Hz.
| Monitor | Refresh rate | Resolution | Size | Panel |
|---|---|---|---|---|
| AW3425DW | 240Hz | 3440x1440 | 34.2 inches | QD-OLED |
| CU34G4H | 200Hz | 3440x1440 | 34 inches | VA |
| AG493UCX | 120Hz | 5120x1440 | 49 inches | VA |
Scroll sideways to see every column.
By price at the time of writing
The CU34G4H was the lowest-priced pick and the AW3425DW the highest when we checked; tiers move with Amazon pricing.
| Price tier | Monitors |
|---|---|
| About $150 to $250 | CU34G4H |
| About $500 to $1000 | AG493UCX, AW3425DW |
Frequently Asked Questions
Which has the highest refresh rate: the AW3425DW or the CU34G4H?
The AW3425DW leads at 240Hz, with the CU34G4H at 200Hz. The AG493UCX is at the other end of this group with 120Hz.
How does the AW3425DW compare with the AG493UCX on screen size?
The AG493UCX leads at 49 inches, with the AW3425DW at 34.2 inches. The CU34G4H is at the other end of this group with 34 inches.
Is the AW3425DW worth paying more than the CU34G4H?
On paper it adds refresh rate (240Hz against 200Hz) and screen size (34.2 inches against 34 inches). The CU34G4H was the lowest-priced pick when we checked, so pay the difference only if those gains matter to you.
What makes the AW3425DW the Fastest Refresh?
It earns the label for the highest refresh rate here (240Hz). It suits competitive shooters where motion clarity matters most.
Do the AW3425DW and the AG493UCX differ on resolution?
The AW3425DW and the CU34G4H use 3440x1440; the AG493UCX uses 5120x1440.
Beyond the specs, what sets the AW3425DW and the CU34G4H apart?
The AW3425DW: an 1800R QD-OLED ultrawide. The CU34G4H: a 34-inch 1500R ultrawide. The AG493UCX: an 1800R 49-inch curve.
Bottom Line
Our first pick is the AW3425DW. Look at the CU34G4H for a lower price than the AG493UCX and the rest when we checked and the AG493UCX for the largest screen size here (49 inches) if those matter more to you.
Measure desk depth before buying a larger screen.