Dell

UltraSharp 40 Curved WUHD Monitor - U4021QW

Dell UltraSharp 40 Curved WUHD Monitor - U4021QW

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Overall

#90 in

Ultrawide Monitors

according to Reddit Icon Reddit

Sentiment score50% positive
4
3
1
Last updated: Apr 17, 2026

Reddit Reviews

Reddit IconIchingNYEU
6 months ago

Hey, I'll chip in since I'm in the same boat, I can also grab U4021QW for $600 in perfect condition and warranty and I've been eyeing U4021QW - these can be had for around $900 if you get lucky. U4021QM is 60Hz, both HDMI outputs can only do 30Hz so you need to use USB-C and/or DP. U4025Q is 120Hz and there was a recent firmware update that addresses some MAC issues. I'm personally rocking AW3821DW and U3818DW. I do enjoy playing games here and there but I see no difference 60Hz vs 144Hz when it comes to productivity. I may grab U4021Qw just to check out since the price is so good. It's up to you how much you want to spend. HTH.

6 months ago

Hey, I'll chip in since I'm in the same boat, I can also grab U4021QW for $600 in perfect condition and warranty and I've been eyeing U4021QW - these can be had for around $900 if you get lucky. U4021QM is 60Hz, both HDMI outputs can only do 30Hz so you need to use USB-C and/or DP. U4025Q is 120Hz and there was a recent firmware update that addresses some MAC issues. I'm personally rocking AW3821DW and U3818DW. I do enjoy playing games here and there but I see no difference 60Hz vs 144Hz when it comes to productivity. I may grab U4021Qw just to check out since the price is so good. It's up to you how much you want to spend. HTH.

Reddit Iconseanocono22
5 months ago

I’ve had two of the U4021 versions for 3.5 years now. They are near perfect productivity monitors, and I imagine the U4025 is even better.

3 months ago

Do you stack them? I’ve stacked the 40” Dells for about 5 years now. I love them, but have been considering an upgrade and this new 52” panel might fit the bill.

3 months ago

Are you a Mac user? I would love to know what the MacOs scaling options are. I currently use stacked Dell U4021QWs. I’m also curious about your impressions regarding 140ppi vs. 129ppi. So please report back on Thursday!

Reddit Iconsob727
5 months ago

I had the 4021 before the 4025. Couldnt tell the difference tbh (yes, one is 60Hz the other is 120Hz, still couldnt tell them apart).

2 months ago

5120x2160 (Dell) and 5090 here With DLSS and RT Medium (I think?) I get around 80 fps in Cyberpunk 2077 and less in STALKER2 (RDR2 does better, above 100). So yeah, I expect to be limited in future and more demanding titles. EDIT: dont get me wrong I have no regrets, my primary use is productivity and 5k2k is a great resolution. If I was primarily a gamer I would stick to a lower resolution for now.

Reddit Icon_Bob-Sacamano
6 months ago

I have my 800r for gaming on the same desk as my 2500r. Have never wanted to bend either. If anything, I'd want a bigger curve on the 2500r Dell 😅

5 months ago

Thank you for the comment on the curve. I swear to god half the forum won't shut up about it. When actually using it, I don't even think about it. It sits next to my 2500r Dell I don't even notice switching back and forth really.

Reddit IconNoJesusOnlyZuul
6 months ago

Ive used both, have also had the LG 45 5K2K and Samsung 57. Currently have the Samsung 40 5k2k. The LG text issue makes it pretty awful for productivity. The vertical space is essential, so Id recommend the Samsung 40, plus I believe it's on sale

Reddit IconAggressive_World_193
12 months ago

I just got the Dell 5k2k 40inch but this one has OLED and got me all interested in it. It’s also slightly bigger too. And that button switch for a higher refresh rate is a welcome function.

Reddit Iconalfasenpai
4 months ago

Oled is not ideal for text clarity. Like someone else commented what you want is a good 5k2k. For productivity Dell Ultrasharp 5k2k is a good bet.

Reddit Iconalp82
10 months ago

I'm going back from a single ultrawide to a dual monitor setup. By adding another ultrawide. My 40" Dell will move to the top and at the bottom I'll add an LG Ultrasharp 45".

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