DELL ULTRASHARP 34 Monitor - U3425WE

A built-in Ambient Light Sensor intelligently optimizes brightness and color temperature based on your surroundings.

Aspect Ratio21:9Connectivity TechnologyThunderbolt, USBDisplay Resolution Maximum3440 x 1440Refresh Rate120 hertzResolutionQHD Ultra Wide 1440pScreen FinishGlossy

About this item

  • A built-in Ambient Light Sensor intelligently optimizes brightness and color temperature based on your surroundings.
  • A 120Hz refresh rate delivers less flicker, more seamless scrolling and smoother motion than 60Hz monitors.
  • Our latest monitors reduce harmful blue light emissions to ≤35%, compared to ≤50% from the previous generation, for all-day eye comfort without sacrificing color accuracy.
  • Partition your display as if there were two 1720x1440 physical monitors instead of one. No external software or DisplayPort splitter needed.
Category: MonitorsRanked #99 of 740 in Monitors
9.8Our score
Our verdict

A built-in Ambient Light Sensor intelligently optimizes brightness and color temperature based on your surroundings.

Ranked #99 in Monitors · 4 things we like

Quick answer The DELL ULTRASHARP 34 Monitor scores 9.8/10 with us. Amazon owners rate it 4.8 out of 5 across 16 reviews, above the 4.3 average of the 494 products we track in Monitors. Key facts: aspect ratio 21:9, connectivity technology Thunderbolt, USB, display resolution maximum 3440 x 1440.

Dell UltraSharp 34 Curved Thunderbolt Hub Monitor - U3425WE, IPS, Curved, WQHD 3440 x 1440, 34Inch, 1.07 billion, 8Ms(normal), 5Ms (fast), 120 Hz, 0.2325mm, 2000:1, 300 cd/m2, 178/178, 21:9, DCI-P3 98%, Display P3 98%, sRGB 100%, BT.709 100%, DCI-P3, Anti-Glare with 3H hardness, 100 x 100mm, 3-Years Advanced Exchange Service

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Product information

24 specifications
Adaptive SyncFreeSync, G-Sync Compatible
Additional FeaturesTouchscreen
Aspect Ratio21:9
BrandDell
Brightness300 candela_per_square_meter
ColorBlack
Connectivity TechnologyThunderbolt, USB
Contrast Ratio2000:1
Display Resolution Maximum3440 x 1440
Display TechnologyLCD
Display TypeLED
Hardware ConnectivityDisplayPort, Ethernet, HDMI, Thunderbolt 4
Item Dimensions D x W x H8.9"D x 18.4"W x 37.8"H
Item Weight23.8 pounds
Model NumberDELL-U3425WE
Native Resolution3440x1440
Picture Quality Enhancement TechnologyIPS, DCI-P3 98%, sRGB 100%, Anti-Glare with 3H hardness
Refresh Rate120 hertz
ResolutionQHD Ultra Wide 1440p
Screen FinishGlossy
Screen Size34 inches
Specific Uses For ProductHome Viewing
Viewing Angle178 degrees
Warranty TypeLimited

Pros & cons

What we like
  • A built-in Ambient Light Sensor intelligently optimizes brightness and color temperature based on your surroundings.
  • A 120Hz refresh rate delivers less flicker, more seamless scrolling and smoother motion than 60Hz monitors.
  • Our latest monitors reduce harmful blue light emissions to ≤35%, compared to ≤50% from the previous generation, for all-day eye comfort without sacrificing color accuracy.
  • Partition your display as if there were two 1720x1440 physical monitors instead of one. No external software or DisplayPort splitter needed.
What could be better

    DELL ULTRASHARP 34 Monitor: questions & answers

    Is the DELL ULTRASHARP 34 Monitor worth buying?

    Yes, it is one of the stronger picks in its group. We score the DELL ULTRASHARP 34 Monitor 9.8 out of 10. Amazon owners rate it 4.8 out of 5 across 16 reviews, above the 4.3 average of the 494 products we track in Monitors. The review count is still small, so treat the rating as an early signal.

    What are the key specs of the DELL ULTRASHARP 34 Monitor?

    Aspect Ratio: 21:9; Connectivity Technology: Thunderbolt, USB; Display Resolution Maximum: 3440 x 1440; Refresh Rate: 120 hertz; Resolution: QHD Ultra Wide 1440p; Screen Finish: Glossy. All 24 specifications are in the product information table on this page.

    What are good alternatives to the DELL ULTRASHARP 34 Monitor?

    Similar, well-rated products in our catalog: Dell UltraSharp 34 Monitor (8.6/10, 4.3 stars from 109 owners); Dell DELL-U4025QW UltraSharp 40 Curved (9.6/10, 4.5 stars from 71 owners); Dell UltraSharp U4025QW 40" Class 5K2K WUHD (9.2/10, 4.6 stars from 243 owners).

    Customer reviews

    All reviews on Amazon
    4.816 global ratings
    5 star89%
    4 star0%
    3 star11%
    2 star0%
    1 star0%

    Breakdown from the 9 most helpful reviews we imported.

    X
    XIV
    August 30, 2026
    Wonderful IPS Display - Great Features - Productivity Focused

    This monitor is an absolute powerhouse for those looking for efficiency, I/O options and a great display as a daily driver for most individuals.The price point is one thing I will say is a bit steep as you can find other options that are higher resolution (This monitor is essentially a 2K display) and can afford an OLED display which can be arguably better but this might not matter so much for those looking for a the most premium display but rather the features this monitor provides.The most notable thing about this monitor is the versatility it has to connect all your peripherals (mouse, keyb

    M
    MarkAnthonyPR
    August 28, 2026
    Great Ultrawide Screen with Amazing Picture and Sound

    I ordered this monitor thinking I'd just use it as a secondary screen off to the side to help organize my work a bit better. But after setting it up and running through extended testing over several days of real-world use, that plan changed completely—this monitor is so good it became my main daily screen.Once you get it out of the box, you can feel how well-built it is. The stand has a wide base that keeps it steady. If I bump my desk with my knee, my old monitor wobbles all over the place, but this one stays stable. When adjusting the vertical height, keep in mind that it tends to hold its p

    J
    Jerry
    August 17, 2026
    Great monitor

    This monitor is impressive...very impressive.First, its huge. 34" is a lot of space when it's sitting on your desk! I got this very specifically for my 3d printing hobbies to use on the laptop I use for all my pinters, and my "workshop" is in our basement, which doesn't have a ton of room. I have a desk down there that I run everything from, and this monitor is now sitting on it. It JUST fits. If it was a little bigger, I don't know that it would work with my setup -- but thankfully it works in the space.And I'm glad it does because it's pretty amazing. The picture is incredibly clear (they ar

    H
    Heather
    August 19, 2026
    BEAUTIFUL, SLEEK,CLASSY, WELL MADE!

    This Dell Monitor is GORGEOUS! The clarity is incredible,and setup was a breeze! The stand is 2 pieces. You simply screw one into the other, hook the monitor on to it which pops right in and you're done...nothing more! Truly plug and play.With this 34" screen and standard 100% font size, there's no problem reading the text at 3440x1440 resolution. At 120 Hz, the video doesn't flicker, the colors are true and vibrant and the 15W speakers put out incredible sound as well which was a surprise.If they'd added a microphone to make this monitor conference call capable that would have been the icing

    M
    Mickeysoft
    August 10, 2026
    Most impressive monitor I have seen in 10 years... WOW!

    I am in IT business for 30 years, I have seen large monitors, curved monitors along my career. The is one I can say that it is the most impressive monitor that I have seen. It is the most complete function rich monitor and with extremely high quality image, speed and saturation. It is expensive, would I pay the price listed here in Amazon? Probably not, as I found other place about 26% off. Let's go to the product review. The unique thing about this is that it have a build-in Thunderbolt hub feature. With this build-in, you can save significant desktop space. The monitor has everything that yo

    L
    lostantx
    August 12, 2026
    Dead pixels out of the box.

    I was super excited to get this monitor and try it out, as I have never owned a curved monitor before and wanted a nice new monitor for my new desk when we moved. This was delivered and both the Amazon box and the Dell box showed no damage, and when I unpacked it, all of the seals were still intact, and there was no evidence of any sort of damage to the screen. I assembled the monitor and set it up, plugged my laptop into it, and immediately when the screen came on, it was evident that there were dead pixels on the screen. The rest of the screen, however, that didn’t have dead pixels, was gorg

    J
    Jim
    August 21, 2026
    Excellent Monitor

    This is a big monitor, or more specifically, a very wide monitor, which is exactly what I expected. I picked this up to use primarily in the family room. I bought several different monitor sizes for different locations, with schoolwork being the primary use along with some light gaming.The picture quality has been great, and the colors look very good. The included stand is also better than I expected. It holds the monitor securely and makes it extremely easy to tilt the screen or raise and lower it. Adjustments take very little effort while still feeling stable once the monitor is positioned.T

    B
    Bruce Richardson
    September 2, 2026
    Fantastic monitor with so many options for setup and input management!!

    First of all, don't let the "thunderbolt" designation fool you into thinking this is a Mac-only device. It is equally compatible in a PC setup, and is a fantastic monitor!!Very high quality picture...I calibrated it and it passed with flying colors. I often work with clients in my studio, so I have a vertically stacked monitor system that you can see in the attached photo. I have a mixer panel on screen in this shot, but while editing I can put the video on screen so clients can easily see it from behind me.When not using it to monitor video, I can easily have my mixer and another application

    Customer reviews are shown as published on Amazon and are not written by Do Best Deal.