The Dell S2417DG is a good 1440p gaming monitor with G-Sync variable refresh rate support. It has a TN panel with mediocre picture quality due to the poor native contrast ratio so blacks appear gray in a dark room, and the image also rapidly loses accuracy when viewed at an angle. For gamers though, it has a high 144Hz refresh rate and feels very responsive due to the low input lag. It also has a fast response time, so fast paced motion only has a short blur trail.
The design of the Dell S2417DG is that of typical Dell monitors like the S2716DG or the U2415. The base is the usual flat rectangle and, as usual, the monitor has very good ergonomics. It can be positioned to match your liking as it can tilt, swivel and rotate and can be placed at portrait or landscape mode.
The stand of the Dell Gaming S2417DG is plastic and very similar to the S2716DG. It supports the monitor well which is great.
The borders of the monitor are very similar to the ones of the S2716DG. They are not thick and they look good. There is a small gap that runs along the border that also serves as a cooling vent of the monitor. And there is also some gap between the bezel and the start of the pixels.
The picture quality of the Dell S2417DG is mediocre. The contrast is low and the monitor is not suitable for dim rooms, but it has enough brightness for an average lit room like an office. The viewing angles are good, but the ergonomics allow the monitor to easily tilt and swivel so that you can point your work to your colleagues. The color space coverage is good and this is good news for those who will use it for media creation. Finally, the gray uniformity is good and this makes it a good option for web browsing or document writing.
The contrast of this monitor is disappointing. It is currently the lowest one we have measured. The monitor is not well suited for dim environments as blacks look washed out, and the image is not vibrant. It is very similar to its big sister, the S2716DG.
The SDR Peak Brightness is very good. It remains relatively constant at various window sizes. It is bright enough to be used in bright office spaces without any issues.
HDR is not supported on the Dell S2417DG.
The horizontal viewing angle is disappointing. Even slight deviations from the middle angle and the monitor loses color accuracy, blacks wash out, and brightness fades. Those viewing it from the side will not have the same viewing experience to those who look straight up front. This is a typical issue with most TN monitors. It is more apparent, however, the closer you sit to the monitor and the bigger the monitor size.
The vertical viewing angle is mediocre. This is mainly due to the monitor keeping a good color and black accuracy and good brightness levels when viewed from above.
The gray uniformity is very good. The Dell S2417DG has very good uniformity in darker shades of gray and looses some of its accuracy in lighter shades. In the 50% gray image, the edges are slightly darker than the center but this a result of the poor vertical viewing angle rather than a gray uniformity issue. This might bother a little those who want to use it for web browsing, and sit too close to the monitor.
The black uniformity is bad. Clouding is all over the screen and blacks look gray. The lighter artifact in the top half may be some damage to our unit, either during shipping or because of our mishandling. It is not, however, very noticeable in normal content.
The out of the box colors of this monitor are disappointing. Even at the most accurate mode of Standard the white balance dE was well above our threshold of 3 and the Color dE was almost just as bad. The threshold of 3 is where we believe most people will start noticing the inaccuracies.
Gamma was well below 2.2 and shades looked very dark and the color temperature was too warm, with yellowish and reddish tones.
The post-calibration accuracy of the monitor is excellent. Most inaccuracies seem to have been corrected and the color temperature was almost on target.
To achieve that we entered the custom mode set luminance to 27, contrast to 75 and the RBG colors to 87 - 92 - 100.You can download our ICC profile calibration here.
The SDR color volume is good. Almost 90.1% of the s.RGB color volume is covered mainly due to good very good color space coverage. However, due to the lacking coverage of the Adobe RGB color space, the monitor is unable to cover the Adobe RGB color volume and in conjunction with the poor contrast ratio, it fails to deliver very dark tones.
The Dell S2417DG has an excellent motion handling as it has a fast response time and can flicker its image to clear the blur. With a native refresh rate of 144Hz, it can handle any fast action.
The Dell S2417 has a flicker-free backlight and this is great. However, it also has the ability to add flicker so as to remove blur. There is also a Pulse Width option that can change the pulse width of the flicker, and can make motion even clearer. This, however, sacrifices some brightness. Unfortunately, when you activate ULMB it adds some overshoot to pixel transitions, that is seen as inverted ghosts following the pattern in the photo. In normal usage this should not be noticeable.
It should be noted that BFI is only supported on DP and at 85, 100 or 120Hz.
The Dell S2417DG has a refresh rate of 144Hz and incorporates NVIDIA's G-sync VRR technology that allows it to change its refresh rate to match that of the graphics card and avoid tearing. G-Sync is not available over HDMI (see our recommendations for the best G-SYNC monitors).
It's worth noting that HDMI only supports a max refresh of 60Hz.
The input lag on this Dell S2417DG is excellent and the native resolution of 1440p is great for almost any usage.
BFI frequency tested: 120 Hz
The monitor has an excellent low input lag in native 1440p resolution. However, when sent a resolution other than 1440p, it does not have a 144 Hz refresh rate.
We also couldn't get any non-native resolutions to work over DisplayPort, hence the N/A in the score (even though the manual states that the display supports resolutions like 1024x768, 800x600 and 720x480).
The Dell S2417DG has a native resolution of 1440p which is great for most usages (see our recommendations for the best 1440p 144hz monitors).
One of the 3.5mm analog audio out ports is a headphone port with adjustable volume, while the other is a fixed volume line out port.
One of the side USB ports (the one with the little battery icon) supports the USB BC 1.2 fast charging standard.
The Dell S2417DG uses Dell's well organized on-screen display just like the S2716DG monitor. The menus have text next to the icon making it easy to know which menu item you are using. The navigation is intuitive but buttons are hard to press.
The OSD has a shortcut key option, which can bind options like volume to a quick menu to save time. It has a USB hub with one port (the one with the little battery icon) supporting the USB BC 1.2 fast charging standard.
During testing a bug made the HDMI port unusable with most inputs until the monitor was factory reset.
We've tested the 24" S2417DG. The monitor is also available in a 27" size (Dell S2716DG).
If someone comes across a different type of panel or if their Dell S2417DG doesn't correspond to our review, let us know and we will update the review. Note that some tests such as the gray uniformity may vary between individual units.
Update 07/09/2018: The S2417DG we reviewed was manufactured in May 2017 (A00 Revision).
The Dell S2417DG has a very similar performance than the Dell S2716DG. The differences between the two monitors can be attributed to manufacturing panel variances. Both monitors have native QHD resolution, but the S2716DG is bigger and this makes it more comfortable when you work on it or watch multimedia.
The Dell S2417DG is slightly better than the ViewSonic XG2402. The Dell S2417DG is a G-SYNC monitor, with a higher 2560x1440p resolution, so you can see more fine details in games or multitask easier. The ViewSonic XG2402 is a FreeSync monitor, great for Xbox One S/X gamers, or if you have an AMD graphics card. The Dell also has an option to introduce flicker to help reduce motion blur.
The ASUS PG279QZ is better than the Dell S2417DG. The two monitors have different panel types, but very similar motion handling and equally low input lag. The ASUS, apart from being larger, has an IPS panel with better picture quality and wider viewing angles that make it easier to share your work with a colleague.
The Acer Predator XB271HU is marginally better than the Dell S2417DG. The Acer has an IPS panel (vs. the TN Panel on the Dell) that provides it with better viewing angles which are important when you look at the monitor from the side such as in an office environment. The Acer has a larger screen size that allows you to work more comfortably and better enjoy multimedia content. On the other hand, the Dell can handle reflections slightly better, and this great if you place it in a room with many light sources behind you.
The AOC AGON AG271QX and the Dell S2417DG have very similar performance. Both support variable refresh rate implementations. The S2417DG supports G-SYNC and the AG271QX supports FreeSync. The Dell also supports black frame insertion (BFI) through the NVIDIA ULMB, which can help clear persistence blur. It also has better ergonomics that make it easy to position the monitor to your liking, whereas the AOC AGON has a larger screen size which makes it more comfortable to work on.
Overall, the Dell S2417DG is slightly better than the MSI Optix MPG27CQ for most uses. The S2417DG has a slightly better stand, with the option to rotate to a portrait orientation. The MPG27CQ looks better in a dark room, as it has better native contrast and an RGB bias lighting feature. The S2417DG supports G-SYNC, whereas the MPG27CQ supports AMD's FreeSync technology.
The Dell S2417DG is better than the Dell U2717D. The S2417DG has a much lower input lag, a faster pixel response time, a much better refresh rate, and better motion handling in general. All these make it a much better monitor for gaming. The Dell U2717D, on the other hand, has an IPS panel (vs. the TN panel of the S2417DG) and this gives it much better viewing angles that are useful in office environments where you might want to share your work with the person sitting next to you.
The Dell S2417DG is better than the Acer XF251Q. The S2417DG has much better motion handling, thanks to a much faster refresh rate, faster response time, and optional black frame insertion feature. The Dell also has slightly less input lag. While the Acer XF251Q supports AMD's FreeSync VRR, the Dell S2417DG supports NVIDIA's G-SYNC instead, so the compatibility with your graphics card should be taken into account when choosing between these two.
The Acer VG271UP is slightly better than the Dell S2417DG. The VG271UP supports HDR, has a larger screen, and has much better viewing angles. The Dell S2417DG, on the other hand, has a much better stand with excellent ergonomics, and it supports G-SYNC instead of FreeSync.