The Dell U3425WE is a 34-inch ultrawide productivity monitor with a curved screen. It's an updated version of the Dell U3421WE, and it's part of the UltraSharp lineup, sitting alongside models that have similar features but different sizes, like the Dell U3223QE and the Dell U4025QW. It's loaded with productivity-focused perks, like a massive USB hub that includes a USB-C port that supports both Thunderbolt 4 and DisplayPort Alt Mode with 90W of power delivery. It offers other features like daisy chaining, Internal Multi-Stream Transport, and a KVM switch that each make it easy to multitask with various computers and screens. Lastly, it comes with an IPS Black panel and a 120Hz refresh rate for a smoother experience compared to 60Hz office monitors. However, even though it supports the DCI-P3 color space, it doesn't support HDR at all.
Our Verdict
The Dell U3425WE is disappointing for PC gaming. It has a 120Hz refresh rate, supports all common VRR formats, and has low input lag. Unfortunately, though, fast-moving objects have blurry motion due to the monitor's slow response time. It also has limited picture quality as it doesn't support HDR at all, and blacks look gray.
- 120Hz refresh rate with VRR support.
- Low input lag.
- Very blurry motion.
- Blacks look gray.
- No HDR support.
- Lacks local dimming.
The Dell U3425WE is bad for console gaming. Without HDMI 2.1 bandwidth, it doesn't support most signals from the PS5 or Xbox Series X|S, and the consoles don't support ultrawide signals either, so there are black bars on the sides. It also has blurry motion and limited picture quality as it doesn't support HDR at all, and blacks look gray in the dark. On the plus side, it supports VRR with consoles and has low input lag for a responsive feel.
- Low input lag.
- Very blurry motion.
- Blacks look gray.
- No HDR support.
- Lacks local dimming.
- Limited compatibility with consoles.
The Dell U3425WE is good for office use. It gets bright enough to fight glare in most well-lit rooms and has decent reflection handling, but visibility is a problem next to sunny windows. It comes with an adjustable stand, and its wide viewing angles keep the image consistent no matter where you view it from. Its 34-inch screen is big enough to open multiple windows side by side, and it also has good text clarity. Lastly, it has a massive USB hub and supports a ton of productivity features, including Thunderbolt 4, a KVM switch, and daisy chaining to connect a second display.
- Bright enough to fight most glare.
- Ergonomic stand.
- Ultrawide screen with good text clarity.
- Massive USB hub.
- Features like KVM and Thunderbolt daisy chaining.
- Glare is distracting in sunny rooms.
The Dell UltraSharp U3425WE is decent for editing in SDR. It comes with an accurate sRGB mode, so colors are accurate even without calibrating it. Its reflection handling is also decent enough to use in most well-lit rooms, but not in sunny rooms. It even has a ton of productivity features, including a large USB hub and Thunderbolt daisy chaining that makes it easy to connect a second display. However, this monitor doesn't support HDR at all, which is disappointing if you want to edit HDR content. Additionally, its curved screen may take time getting used to if you've never used a curved screen to edit content.
- Bright enough to fight most glare.
- Ultrawide screen with good text clarity.
- Massive USB hub.
- Features like KVM and Thunderbolt daisy chaining.
- Very accurate sRGB mode.
- Blacks look gray.
- No HDR support.
- Glare is distracting in sunny rooms.
The Dell U3425WE has very good brightness in SDR, so it fights glare well. However, it doesn't support HDR at all.
- Bright enough to fight most glare.
- No HDR support.
The Dell U3425WE has a poor response time as fast-moving objects are blurry.
- Very blurry motion.
The Dell U3425WE doesn't support HDR.
The Dell U3425WE has okay SDR picture quality. Its main strength is that it displays a wide range of colors. While it has a decent contrast ratio, blacks still look gray.
- Displays wide range of colors.
- Blacks look gray.
The Dell UltraSharp U3425WE has remarkable color accuracy. The dedicated sRGB mode has very accurate colors, so you won't need to calibrate it unless you need perfect white balance.
- Very accurate sRGB mode.
Performance Usages
Changelog
- Updated Feb 21, 2025: We've converted this review to Test Bench 2.0.1. This includes a new test result for DisplayPort 2.1 Transmission Bandwidth.
- Updated Sep 30, 2024: Review published.
- Updated Sep 25, 2024: Early access published.
- Updated Sep 18, 2024: Our testers have started testing this product.
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Differences Between Sizes And Variants
We tested the 34-inch Dell U3425WE, which is the only size available. As part of the Dell UltraSharp lineup, it sits alongside the Dell U4025QW, the Dell U2723QE, and the Dell U3223QE, which have many of the same features but have different sizes and resolutions. Dell has other 34-inch, 3440x1440 productivity monitors, for which you can see the differences below, but the results in the review are only valid for the U3425WE.
| Model | Release Year | Curve | Panel Type | Refresh Rate | USB Hub | Thunderbolt |
|---|---|---|---|---|---|---|
| U3425WE | 2024 | 1900R | IPS Black | 120Hz | 5x USB-A 5x USB-C |
Yes |
| P3424WE | 2023 | 3800R | IPS | 60Hz | 4x USB-A 1x USB-B 1x USB-C |
No |
| U3421WE | 2020 | 1900R | IPS | 60Hz | 4x USB-A 1x USB-B 2x USB-C |
No |
Our unit's label indicates that it was manufactured in April 2024. We tested it with firmware M3B102.
Compared To Other Monitors
The Dell U3425WE is a 34-inch, 3440x1440 ultrawide monitor meant for productivity. Its massive USB hub makes it easy to connect various devices directly to the monitor. It has other features like Thunderbolt 4, which is ideal if you have a Thunderbolt laptop, and the KVM switch and daisy chaining make it easier to multitask. While it's one of the most feature-packed work monitors you can get, it also has some limitations. Without HDR support, you can't edit content in HDR, and although it has some perks to make it versatile for gaming, like a 120Hz refresh rate and VRR support, fast-moving objects look blurry. If you're looking for a dual-purpose ultrawide for gaming and office work, there are better options available, but if you want premium office features in an ultrawide display, it's worth considering.
See our recommendations for the best work monitors, the best ultrawide monitors, and the best USB-C monitors.
The Dell U4025QW and the Dell U3425WE are both ultrawide productivity monitors in Dell's UltraSharp lineup. They have many of the same features, including their large USB hub and Thunderbolt 4 support, but there are a few differences. The larger screen on the U4025QW gives you more screen space, and it has a higher resolution for sharper text. The U4025QW also supports HDR, which the U3425WE doesn't.
The Dell U2723QE and the Dell U3425WE are both productivity monitors in Dell's UltraSharp lineup. Besides their sizes and resolution, they're different in a few ways, particularly with features. The U3425WE has more USB ports and supports Thunderbolt 4, which is useful if your laptop also supports Thunderbolt. It also has a higher 120Hz refresh rate for a slightly smoother feel and supports VRR, which the U2723QE doesn't. However, the U2723QE delivers sharper text and unlike the U3425WE, it supports HDR.
The Dell U3223QE and the Dell U3425WE are both productivity monitors in Dell's UltraSharp lineup. Choosing one over the other comes down to which size and resolution you prefer, but there are a few differences in features, too. The U3425WE is more useful if your laptop has Thunderbolt support because the monitor itself supports Thunderbolt 4, which the U3223QE doesn't. The U3425WE also has a higher 120Hz refresh rate for a slightly smoother feel and supports VRR, which is beneficial for casual gaming. On the other hand, unlike the U3425WE, the U3223QE supports HDR.
Test Results
The Dell U3425WE has a simple office-oriented design. It's mainly silver, but there are black accents throughout, including on the vents underneath the bottom bezel.
The build quality is great. The plastic materials are well-made, but the back panel flexes when you press on it. It wobbles on the stand, which is normal for a monitor of this size, but it recovers quickly.
The ergonomics are good. You can adjust the monitor in a number of ways, and the stand holds the screen in position well when you adjust it. There's a cutout in the stand for cable management.
The thickness is from the side of the screen to the back of the stand, and the thickness from the center of the screen to the back is 5.7" (14.5 cm).
The thickness is from the side of the screen to the back of it, and the thickness from the center of the screen to the back of the stand is 2.2" (5.5 cm).
There's a power button to turn the monitor on/off and a joystick to control the on-screen display.
- DisplayPort cable
- HDMI cable
- USB-C to USB-A cable
- USB-C cable
- Power cable
- Documentation
Note: The red cable ties are not included in the box.
The Dell U3425WE has a decent contrast ratio. While it displays fairly deep blacks next to bright highlights and is better than most IPS panels, it lacks a local dimming feature to further improve it.
This monitor has no local dimming feature. We still film these videos on the monitor so you can compare the backlight performance with a monitor that has local dimming.
Settings
- Preset Mode: Custom Color (after calibration)
- Brightness: Max
The SDR brightness is very good. It gets bright enough to fight glare in most well-lit rooms, but not if you place the monitor opposite a sunny window.
This monitor doesn't support HDR.
The horizontal viewing angle is good. The image remains consistent from the sides, which is useful if you want to share the screen with someone next to you.
The vertical viewing angle is okay. While it's fine if you're standing up and looking down on the monitor, it washes out at really wide angles.
The gray uniformity is great. Although the edges are a bit darker than the screen, there isn't much noticeable dirty screen effect in the center. The results are with Uniformity Compensation off.
The black uniformity is poor. There's visible backlight bleed, especially at the top corners, and there's clouding throughout.
The accuracy before calibration in the 'sRGB' Preset Mode is remarkable. It locks colors perfectly to the sRGB color space, and the white balance is impressive. The color temperature is also close to the 6500K target, and gamma follows the sRGB curve well, but most scenes are slightly too dark.
The sRGB mode only locks you out of the Gain, Offset, Hue, and Saturation settings. You have access to those with the 'Custom Color' mode, but colors are oversaturated in that mode.
The accuracy after calibration is incredible. There aren't any noticeable inaccuracies, and the main benefit of calibrating it is if you want access to the settings that are locked out in the sRGB mode.
The SDR color gamut is fantastic. It has perfect coverage of the sRGB color space used in most content. It also has great coverage of the Adobe RGB color space, but it oversaturates reds and undersaturates greens, which is disappointing if you're a photo editor.
Although it doesn't support HDR, it has a 'DCI-P3' Preset Mode, for which you can see the results.
This monitor doesn't support HDR.
The text clarity is good. Enabling Windows ClearType (top photo) improves the boldness of letters and makes them easier to read. These photos are in Windows 10, and you can also see them in Windows 11 with ClearType on and with ClearType off.
The reflection handling is decent. The matte screen coating diffuses a lot of the light, so while it's fine if you have a few lights around, the screen is harder to see in a really bright room, like opposite a sunny window.
The gradient handling is remarkable. There isn't any noticeable banding with shades of similar colors.
Due to bandwidth limitations over HDMI, you can only reach the max refresh rate over DisplayPort or while using DisplayPort Alt Mode over USB-C as long as you have USB-C Prioritization set to 'High Resolution.'
| NVIDIA | VRR Min | VRR Max |
| DisplayPort | <20Hz | 120Hz |
| HDMI | <20Hz | 100Hz |
| AMD | VRR Min | VRR Max |
| DisplayPort | <20Hz | 120Hz |
| HDMI | <20Hz | 100Hz |
On top of supporting FreeSync VRR and G-SYNC compatibility, this monitor also supports HDMI Forum VRR.
| Refresh Rate | CAD Heatmap | RT Chart | Pursuit Photo |
| 119 | Heatmap | Chart | Photo |
| 100 | Heatmap | Chart | Photo |
| 80 | Heatmap | Chart | Photo |
| 60 | Heatmap | Chart | Photo |
The Dell U3425WE has poor motion handling across its VRR range. Fast-moving objects look blurry, and there's smearing. The 'Normal' Response Time overdrive setting is consistent across the VRR range, while the 'Fast' setting has more inverse ghosting as the refresh rate drops. Both settings have such high CAD that they pass the limit of the chart, which you can see in an alternative chart.
The refresh rate compliance is awful. Its response time isn't fast enough to make full color transitions before the monitor draws the next frame.
The monitor doesn't have a backlight strobing feature to reduce persistence blur.
The Dell U3425WE doesn't have any noticeable VRR flicker with changing frame rates, which is great for gaming.
The backlight is complete flicker-free, which helps reduce eye strain if you're sensitive to it.
The input lag is low for a responsive feel.
This monitor has limited compatibility with the PS5, as you can only play games up to 60Hz. As the console doesn't support ultrawide signals, you'll see black bars on the sides.
This monitor has limited compatibility with the Xbox Series X|S. You can get a 1080p @ 120Hz signal when enabling the console's HDMI override setting, which disables VRR. As the console doesn't support ultrawide signals, you'll see black bars on the sides.
The Thunderbolt downstream port on the back supports daisy chaining to connect a second display directly to the monitor. On top of that, it has an RJ45 Ethernet port, which is useful if your laptop doesn't have one.
The Dell U3425WE has a massive USB hub that makes it easy to connect various devices. One of the USB-C ports supports Thunderbolt 4 and DisplayPort Alt Mode with 90W of power delivery, so you can display a signal from your laptop and charge it with a single cable. The USB-C port next to it serves as an upstream port, so this is the port you need to use for the KVM switch. The other USB ports are all downstream ports to which you can connect your devices to use on your computer. The USB speed changes depending on whether you set USB-C Prioritization to 'High Data Speed' or 'High Resolution.'
Note: The Thunderbolt 4 port on our unit broke after we tried changing the Color Space setting on a MacBook. We confirmed that it works as intended, including with the KVM switch before it stopped displaying any video signal, but it still provides 90W of power.
| Connection | HDMI 2.0 | HDMI 2.1 | USB-C and DP |
| Max Refresh Rate | 100Hz | 100Hz | 120Hz |
| VRR Range | N/A | 48-100Hz | 48-120Hz |
| HDR | No | No | No |
This monitor works well with macOS. All of the monitor's features, including the Picture-in-Picture/Picture-by-Picture mode, work well, and the text clarity is good. If you're using a MacBook and close the lid, you can continue working on the screen, including with any USB devices plugged into the monitor. Windows also return to their original positions after waking the laptop up from sleep.
The Dell U3425WE has a few extra features to help with productivity. This includes a KVM switch that makes it easy to switch between sources and use the same keyboard and mouse connected to the monitor. Other features include:
- Ambient Light Sensor: Adjusts the monitor's brightness depending on the surroundings.
- Dell ComfortView Plus: Certified with TÜV Rheinland Eye Comfort to reduce blue light.
- Internal Multi-Stream Support (iMST): Divides your screen into two 1720x1440 virtual monitors. This is part of the Picture-in-Picture/Picture-by-Picture mode.
- Uniformity Compensation: Aims to improve the uniformity of the screen. We tested Gray Uniformity with it off.
