When comparing LG 25UM57 vs Dell S2718D, the Slant community recommends LG 25UM57 for most people. In the question“What are the best monitors?” LG 25UM57 is ranked 6th while Dell S2718D is ranked 114th. The most important reason people chose LG 25UM57 is:
The fact that a monitor of this price range has a 5M:1 contrast ratio is simply astonishing. This means users get cinema-like picture quality right at their desk.
Specs
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Pros
Pro Cinema-like picture quality for an affordable price
The fact that a monitor of this price range has a 5M:1 contrast ratio is simply astonishing. This means users get cinema-like picture quality right at their desk.
Pro Good sound quality with no need for external speakers
This monitor's speakers are as good as those found on small TVs. They're located in the back and come with an audio jack for headphone connectivity.
Pro Immersive
The 2560x1080 resolution creates an immersive setup. This applies even for work tasks: multiple documents can be displayed side-by-side with no legibility sacrifice. It's equivalent to having two monitors with 1280x1080 screens.
Pro Advantageous for all uses
This monitor's ultrawide screen has advantages for all uses. When it comes to movie watching or gaming, the screen size contributes to a truly engaging experience. As far as general productivity goes, the ultrawide screen makes it easy to have different applications or documents open side by side.
Pro Great for watching movies
The 21:9 aspect ratio comes in handy when watching movies. This is the default aspect ratio at which almost all of the films are shot. Hence, you can watch your movies without having two black bars at the top and bottom of the screen.
Pro Can charge a laptop
You can connect the S2718D to a USB-C compatible laptop and charge it.
Pro Works well in bright room
The Dell S2718D is an excellent option for those who are looking for a monitor for reasonably well-lit, office-like environment because of the excellent overall picture quality this monitor can achieve when placed in a bright room. The S2718D can display crisp and lifelike colors thanks to its IPS panel that offers fair peak brightness and the high resolution of 2540x1440 pixels.
Cons
Con Limited connectivity
This monitor has two HMDI ports, which is pretty good. However, it misses other display inputs such as DVI or Display Port, making incompatible with older computers.
Con Lack of support for ultra-widescreen in (old) games
A handful of games do not support 21:9 aspect ratio by default. Some examples are Overwatch, Fallout 3, and Starcraft 2. If this is important for you, it is recommended you test this issue before getting this monitor. But there are solutions: you can either install fixes (only available for some games) or play in windowed mode, using a different aspect ratio.
Con Slow response time
A response time of 5 ms on a gaming monitor is pretty awful. Considering its refresh rate, it is understandable but not acceptable. Note that this response time is from gray-to-gray.
Con 720p and 1080p videos are sandwhiched
This monitor's aspect ratio means that many online videos, such as those from Netflix or YouTube, will have black spaces on the sides, which can be annoying.
Con Needs to be calibrated
You'll need to spend some time calibrating the S2718D because the monitor's out of the box color inaccuracy is very high - it measures at the dE of 5.46, which means that the color inaccuracies will appear perceivable by a human eye.
