Dell UltraSharp U4021QW

Based on 38 reviews

The Looria Grade (A - F) accounts for multiple factors, including sentiment, helpfulness, and more. Learn about our sources and ranking.

  • Great for productivity
  • Picture-in-Picture/Picture-by-Picture and KVM switch capability
  • Image stays accurate when viewed from the sides
  • Low contrast ratio
  • Typical of an IPS panel


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Working Fine on OSX Big Sur at 5120 * 2160
Love this monitor. Have a 2019 Mac Pro driving this monitor plus two 4K displays. Only had it a week, but the extra screen real estate has already increased my productivity which is why I got it. Far more than I thought. I had held off on getting a monitor like this as the vertical resolution on ava...
Professional Investor
1 year ago
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Dell UltraSharp U4021QW
The Dell UltraSharp U4021QW is a great office monitor with an impressive 5k x 2k resolution and a large 40 inch screen, making it very well-suited to productivity and multitasking. It also has some nice extra features, like Picture-in-Picture/Picture-by-Picture and KVM switch capability, but lacks o...
Samuel Breton
3 months ago
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I ended up going with the Dell. I have it set up with it's PiP mode and am using both a thunderbolt and usb-C to DisplayPort connection at 75/25 and with that, I get full resolution @ 60hz for both sections.
Triple monitor setup: 27" or 32" ?
I had a 3 monitor set up with Dell Ultrasharp 4K 32 inches. It was nice.
Best Ultra-wide Monitor Money Can Buy (For Now)
I personally use my MBP 16 inch with this monitor and it works like a charm. I scale it down to the highest setting to have more real estate and the clarity is still amazing. I would recommend anyone looking for an ultrawide to go with this monitor. If you're not playing FPS games you could still ga...
Vikram Pal
1 year ago
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[Monitor] LG 32” 1440, 165hz VA, 350 nit 32GN600-b for $249.00, only in store at Wal-Mart
This is one of the biggest culprits as to why the factory settings have colors and text surrounding look cloudy, especially the greys. Setting this to zero will give you deeper, richer greys and clarity, especially for text. Next I would adjust the brightness to the lowest that you can still see clearly and is pleasing to the eye. The default 100 is terrible.
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Monitor Flickers when using Zoom - M1 Mac 2020
The media could not be loaded. I bought this monitor for an M1 Macbook Pro 2020 and for the first 7 days the monitor worked perfectly but after that, I started having issues with the monitor flickering and losing color. I tested out two different Thunderbolt cables just to make sure it wasn't my com...
1 year ago
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Ultrawide productivity monitor with USB-C connectivity
I'm not sure if there's any 34-inch ultrawide under the Ultrasharp family, but generally Ultrasharp monitors have color calibration from the factory too. Recently reviewed the Dell U4021QW (overkill monitor btw) and I enjoyed everything that monitor has to offer. ​. Also, if I remember correctly, there's the Acer CB342CK (2021 version) which has USB-C as well.
Fantastic monitor
I have it connected to my Surface Pro 7+ 1TB thru the Surface Dock 2 with USB-C connection with native resolution. (5120x2160) It works very nice so far.
Amazon Customer
1 year ago
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Very nice monitor
Very high resolution
jess gibbens
1 year ago
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Display Type

LED-backlit LCD monitor / TFT active matrix

Diagonal Size


Viewable Size


Curved Screen

Yes (2500R)