I have had this monitor for about 6 months. I bought it because I needed a monitor that I could connect my Xbox Series S to, and for my computer, as I work on it (with videos, graphics, etc.) and I wanted something quite high quality in colors. Let's look at the positives and negatives.
Positives
1) IPS panel. What could be better for the eyes?? I really spend over 10 hours in front of the screen and it doesn't tire me at all!
2) It comes with its cables! for display port to display port, type c to display port, and power supply..
3) It has a USB hub under the monitor where you can plug in a mouse/keyboard and generally anything you want.
4) I have been impressed by its colors in games, on the Xbox and generally with the colors in movies, etc.
5) Dell's Command Center is very user-friendly!!
6) The RGB on the back is very beautiful!!
7) Viewing angles… you can see from any side you want and see exactly what it shows… it's the IPS panel, you see..

Now let's talk about its negatives.
Negatives
1) I have a complaint… I got it for €450… why don't you include a remote control??? The navigation from the bottom is a bit annoying

Starting by mentioning that I have been the owner of this monitor for a week.

Regarding the monitor, I bought it for gaming but also for everyday use and to pair it with a Dell S2722QC IPS 4K (for which I have expressed my review). Due to budget constraints and the fact that I wouldn't be using it exclusively for gaming, I chose not to go for OLED or mini-LED. It is well known that OLED panels have much better performance, but depending on the model and their characteristics, they exceed in price and also have the risk of burn-in, despite the fact that panel implementations are gradually improving over time, thus reducing the issue.

As for the monitor itself, it has a very good build quality (like most Dell monitors), and its stand allows for all movements such as rotation, tilt, and height adjustment. It features two illuminated logos on the back and around the power on/off button. In terms of ports, it has 2 x DisplayPort v1.4, 1 x HDMI v2.1 (which is actually v2.1 for VRR, but should technically be called v2.0 based on the bandwidth it can handle), 1 x USB Type-B 3.2 GEN 1 (upstream) to work as a hub for the 2 x USB Type-A 3.2 GEN 1 (downstream), and it does not have any audio output. Therefore, you cannot connect any audio device to the monitor. Finally, the package includes DisplayPort v1.4 2M, USB-C to DisplayPort 1M, and USB Type-B 2M cables.

In terms of dimensions and resolution, the 27-inch size with 1440p (QHD) is ideal. If you want a larger screen for close viewing, it might be better in my opinion to go for an Ultra-Wide or 4K monitor, to have more pixels and a clearer view without pixelation in details.

In terms of Hz and response time, the 165Hz with 1ms do a great job and you can notice the difference in gaming. Additionally, in gaming, it has the ability for automatic overclocking if you choose, reaching up to 180Hz. Furthermore, it fully supports NVIDIA G-SYNC and AMD FreeSync Premium Pro.

The colors out of the box are good, but with calibration, you can achieve ideal results for your specific panel. However, it is not necessary in this case. Additionally, the HDR (HDR10 - DisplayHDR 600), although not on the level of HDR10+ or Dolby Vision and not reaching the implementations of OLED panels (e.g. QD-OLED, WOLED), is still very impressive and makes a difference (for example, in my case, where the S2722QC has simple HDR10, the difference in brightness, vibrancy, and color range is noticeable and enjoyable).

However, in Windows, in order to achieve this result, you need to go through the settings and select "Display Settings - Brightness and color - Use HDR" and within that, also select SDR content Brightness at 100%. Initially, it is set at 40%. The problem that arises when HDR is enabled through the monitor settings is that the brightness is very low and the colors are not vibrant. This happens because when there is no white background, the content being displayed is adjusted based on SDR (Standard Dynamic Range), which is not desired. This needs to be done for any monitor with HDR capabilities. Note that by enabling HDR Mode, any ICC Profile you have will be disabled.

However, it is preferable to use HDR in movies and games, but in regular use, you should turn it off as you will notice color distortion in videos (YouTube, Twitch) that have people (faces turn excessively red) if the content is not HDR and is SDR. This is a quirk of Windows that happens on every screen, in my case, I have tested it on the 2022 LG C2 (HDR10) which costs 1500€ and has the same result. This should not discourage you whether you choose this monitor or any other regardless of panel technology (IPS, OLED, etc.). I have not found a way for Windows to auto enable-disable HDR only when there is corresponding content, nor have I seen any relevant updates. If I manage to find something, I will come back with an update.

In conclusion, the implementation of this monitor is very good and it delivers what it promises. It is the "entry-level" of the Alienware series, but it offers valuable features. If someone needs a monitor for all-around use like work, gaming, content consumption, it will definitely reward them. Finally, regarding the price, it is not overpriced and it is worth the money it asks for. Since it is still very new, it has not had any price drops yet (it had some discount at launch due to pre-orders).
Personally, I am completely satisfied and I highly recommend it.

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Update: It would be good to perform the latest firmware update (M2B102) so that you can enable 120Hz at 1440p on PS5, as before this, the entire screen turns green and does not work. [Link to update]

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Update 2 (10/11/2023): The issue with color distortion on YouTube and Twitch in browsers when the content is not HDR and is SDR (as in almost all cases) seems to have been fixed. Perhaps there was a fix with a Windows update. I have not tested it on the LG C2 to confirm. However, I am now running at 180Hz with HDR permanently enabled on the monitor, Output Color Format YCbCr444, and Output Color Depth 10 bcp. Additionally, I have calibrated it using the "Windows HDR Calibration" app from the Microsoft Store and everything seems to be working smoothly