Dell UltraSharp U4025QW 40" Class 5K2K WUHD Curved Screen LED Monitor - 21:9

Upgraded from a Dell 3818dw widescreen. All the reviews online I've read (or watched on YouTube) about this monitor are spot on. The color is excellent (as been my experience with most Dell Ultrasharp monitors), 120Hz is a nice upgrade, as is HDR (abet only HDR600, and not HDR1000) which is bright. Black level is really good for an IPS panel - this display uses "special new-tech" called IPS-Black. Not as good as OLED, but better than the last IPS panel. Viewing angle is very wide. Response time is adequate for professional use - this is not a gaming monitor, rather a monitor designed to get work done - be it coding, photo/video editing, or 3D modeling, although it works for the light gaming. The built in KVM works well, with the Thunderbolt connecting to a Macbook Pro, while the HDMI connects to a KVM that has 4 systems on it. It is nice that you can turn off the 2.5GB network from switching with the monitor's KVM so the one device you want to use the wired connection (like the Macbook Pro on Thunderbolt) doesn't loose it's wired connection when switching to the other device - little details like that show that the folks who designed the monitor actually deal with these use cases. Highly recommend, especially if on sale.

Really lovely, if pricey, monitor. VERY easy to unbox and get on desk, pretty easy to set up all the cords, but I'm not really using all the features. My work laptop will not cooperate with the switching software due to security features, but my personal laptop could. So instead I switch one cord and that works. Nice and neat on my desk. Beautiful color and clarity. I do a lot of photo post-processing (Adobe LightRoom and Photoshop) and it's great for that. Also terrific for multiple work windows. Great to have a seamless workspace vs the 3 monitors I was using before. I'm very happy.

I've had the U4025QW for about a week now and love it. I was using a 34" Viewfinity curved monitor. I needed a little more screen space, more up-to-date port options, but the main reason I wanted this monitor is to take advantage of it's 5k2k at 120Hz. I just got a M4 MacBook and it works great paired with this monitor.Color and brightness are great. All of the port options are a life saver, especially the little dropdown quick access port, and the 120Hz is smooth with my new MBP. I'm sure more things will be revealed to me the more I use this amazing monitor.My one gripe would be the curve of the monitor. My previous monitor has a 1500R curve rating. I never felt like I had to turn my head to look anywhere on the monitor, and if I did turn; it was rare and ever so slight. For a lack of a better word, the curve was perfect.The U4025QW has a 2500R curve rating so it isn't nearly as curved as the Viewfinity and I do find myself having to turn my head more often than not. Which isn't a huge issue right now but I can see it getting tiresome after a while. That's why I wish the monitor had a little bit more of a curve, at least an 1800R rating.Now, I am sitting at the same distance I was with the Viewfinity, about 26", which plays into this issue a little bit. I'm waiting for my new desk to arrive which is 60"x30"; so I'll be about 32"-33" from the monitor with the new desk. In my opinion, you need to sit at least 32"-33" away in order to not have to worry about turning your head with this monitor. The only issue is, most desks are between 23"-25" in depth so you'll want to keep that in mind when buying this monitor. Dell should have thought about this during R&D but I digress.The whole point of a curved monitor is so you shouldn't have to turn your head much if at all. This might not be an issue for some people but it can become a problem in the long run. Just my 0.02 cents.It's still a great monitor regardless of this issue. I hope this helps others looking to buy this monitor.

This is a great monitor, picture quality is outstanding with great color fidelity. Coming from a standard 28 inches16X9 Samsung 4K monitor, which I also purchased here on Amazon, sometimes I do notice blurriness on some photos specially if you put them full screen, but this is understandable being that even with the high pixel density on this monitor low quality images will look a little blurry in full screen or when expanded more than %100 of their native size. (Not a monitor's fault). UPDATE: Correction, all I had to do to remove all the blurriness was to decrease the monitor sharpness settings, I brought that down from the default setting to just 40 and that made a huge difference without losing the quality of the images or video.Also, if you want to compensate for that, and you have great vision like 20/20, then you can change the scaling on Windows to just %125 instead of the recommended %150. However, for people like me with not the best vision, then everything becomes a tiny bit too small to look at comfortably. And also at such lower scaling some websites serve smaller lower quality images (specially on sites using WordPress) and this I do not like either, so I stick to the recommended %150 scaling which gives me an overall best experience everywhere.To the user "JVH" who posted a review complaining about the monitor changing sources unexpectedly, this is a feature, you may disable it on the Monitor Menu settings or using Dell Display Manager software which you may install and will give you easier access to the monitor features, or just accessing the built-in monitor Menu. On the monitor, however, you can just go to the Menu using the joystick, then go to "Input Source", then "Auto Select" and change it to OFF.This is a huge monitor, and you need plenty of space on your desk to use it. I also agree the ports in the monitor are placed facing downwards (a trend on most new monitors these days) which makes it hard to reconnect cables if unplugged.Regarding the KVM switch it has worked fine for me for the most part, however the network switch mode doesn't work very well, and it's complicated to switch sources if you use the network switch instead of the KVM USB mode.I also wish more than 2 computers could be connected to the monitor with the USB KVM mode, more than two computers can only be used while utilizing the KVM Network mode.There are only three color modes built in "Standard", "Movie" and "Game". Default color modes and presets are not as many as in other monitors and I find the default colors either too yellow or washed out for my taste, however I selected Movie mode for now then played a little with the brightness/contrast and color saturation and I have gotten it to look good for my taste.By all means please do yourself a favor and install "Dell Display Manager" This app makes it easy to quickly manage your monitor settings, change them and I have also noticed that the display delivers more a more sophisticated picture when that app is installed. You'll also be able to export/import certain settings with it and over control almost everything without the need to play with the joystick in the back.If you have an NVIDIA card, by all means install the Nvidia settings app then go to the Display tab then "Adjust Color Settings" and play with the brightness/contrast/Gama and Digital vibrance a little to make it look even better. Before you do that make sure to take screenshots of the current settings, if you change it too drastically you might find it very hard to find the previous settings, and you might need to reset the app to defaults and start from zero again.Here are my current settings on the "Display/Adjust Desktop Color Settings" on the Nvidia App:1- First, select ALL channels on the color channel option2- Brightness +403-Contrast +554-Gamma +1.125-Digital Vibrance +676- Save all the settings.Now go to the Video tab on the Nvidia App then go to "Adjust Video Image Settings"1-) Edge Enhancement select "Use the Nvidia Settings" and set it to +102-) Noise Reduction select "Use the Nvidia Settings" and set it to +73 Deinterlacing, Select "Use Inverse Telecine"4 RTX Enhancement, Select Super resolution and set the quality to 4.Here are my hard settings on the Monitor itself:Brightness 69Contrast 67Autobrightness OFFAutocolor Temp OFFColor SettingsPreset mode: MovieInput color mode: RGBHue 50Saturation 67DisplayAspect Ratio 21:9Sharpness 40Response Time: FastSmart HDR: OFFPS: I'm still playing with the settings, so I'll update my settings here as I play more with them.You also have options to change the Color Temperature, Color Space or you can skip all prebuilt picture modes and select "Custom Color" this is ideal for those who really know what they are doing and that's what I'll probably switch to when I have time to play with it.Keep in mind I'm still discovering mode and might radically change these settings again, but so far these settings are the easiest I have found to change and give me stunning picture and video settings. Take the above advice as not from an expert and also as only a base from where to start to tweak the monitor to your liking. Again, ensure to keep screenshots of all your current changes in case you want to go back to what you had, or you'll need to reset everything to defaults and start as a new monitor.I have been holding on from buying an ultrawide for years because I was not willing to downgrade from 4K to any of those ultrawide ones with very low resolution. This is finally a 5k2k that wouldn't make me feel like I was downgrading instead of upgrading. Other than the few cons, this is an excellent monitor and I would recommend it to anyone.