The design of the Dell U3417W is excellent. The width of the screen stands out and the curved screen looks good. The stand is fairly heavy and results in a stable monitor despite the small footprint. Like other ultrawide monitors, it isn't possible to rotate the monitor to display a portrait image. The rear also looks good, and there is a hole in the stand to route cables through and reduce clutter. The build quality is also great, and shouldn't cause any issues.
Width 13.4" (34.0 cm)
Depth 8.9" (22.6 cm)
The stand has a fairly small footprint, but still supports the monitor well and feels very stable. It has the typical Dell minimalistic design, which is good.
Height Adjustment 4.4" (11.2 cm)
Switch portrait/landscape No
Swivel Range -30° to 30°
Tilt Range -20° to 5°
The ergonomic adjustments are mediocre. The options available to adjust are the height, the swivel and the tilt of the monitor. The limited range available in these adjustments can sometimes make it a bit more difficult to find a comfortable viewing position. Update 10/23/2018: Swivel range was missing. It was remeasured and the review has been updated.
Wall Mount VESA 100x100
The rear of the monitor looks clean and minimal. A hole at the back of the stand provides space for some cable management. All of the inputs are located on the bottom and directed down.
Borders 0.4" (1.0 cm)
The borders of the Dell Ultrasharp U3417W are quite thin and look good. They are fairly basic, made of plastic.
Thickness (with stand) 7.9" (20.1 cm)
Thickness (without stand) 4.0" (10.2 cm)
The Dell U3417W monitor appears quite thick when viewed from the side due to the curve of the screen (see our recommendations for the best curved monitors). It can sit quite close to a wall though, which is good.
The build quality of this Dell Ultrasharp U3417W monitor is great. The parts feel high quality and well constructed. It is unlikely to present any issues in normal use.
Picture Quality
LCD Type IPS
Native Contrast 908 : 1
Contrast with local dimming N/A
The Dell Ultrasharp U3417W has a sub-standard native contrast ratio and as a result, it is not best suited for use in a dark environment since black tends to look more grayish than really deep blacks. This is particularly noticeable when playing video games in a dark room, as it gives a washed out look to most dark video cutscenes. For this reason, this monitor is best suited for well-lit room, as most other IPS monitors.
Note that the 908:1 contrast ratio is measured with the 'Uniformity compensation' set to 'Off'. We found out that when set to 'Calibrated', the contrast ratio was only of 554:1, and since we did not find any striking advantage when this option was set to 'Calibrated', we decided to leave it to 'Off'.
Local Dimming No
Backlight Edge
The Dell U3417W does not have a local dimming feature. The video is for reference only.
SDR Real Scene 349 cd/m²
SDR Peak 2% Window 366 cd/m²
SDR Peak 10% Window 364 cd/m²
SDR Peak 25% Window 361 cd/m²
SDR Peak 50% Window 359 cd/m²
SDR Peak 100% Window 357 cd/m²
SDR Sustained 2% Window 365 cd/m²
SDR Sustained 10% Window 361 cd/m²
SDR Sustained 25% Window 358 cd/m²
SDR Sustained 50% Window 356 cd/m²
SDR Sustained 100% Window 354 cd/m²
SDR ABL 0.002
Very good SDR peak brightness. The Dell 3417W has no issue getting bright enough to be usable in almost all viewing environments. Unfortunately, most picture modes come with the "Uniformity Compensation" feature enabled which reduced the brightness of our units to a mere 200 cd/m2. To achieve the higher luminance level, this setting must be disabled.
HDR Real Scene N/A
HDR Peak 2% Window N/A
HDR Peak 10% Window N/A
HDR Peak 25% Window N/A
HDR Peak 50% Window N/A
HDR Peak 100% Window N/A
HDR Sustained 2% Window N/A
HDR Sustained 10% Window N/A
HDR Sustained 25% Window N/A
HDR Sustained 50% Window N/A
HDR Sustained 100% Window N/A
HDR ABL N/A
HDR is not supported.
Color Shift from Left 44°
Color Shift from Right 40°
Brightness from Left 51°
Brightness from Right 50°
Black Level from Left 75°
Black Level from Right 75°
Curve Radius 1,900R
Good horizontal viewing angle. As is typical of IPS-type LCD monitors, the Dell Ultrasharp U3417W's black level does not rise significantly when the monitor is used at an angle. Its colors remain decently accurate and it doesn't lose most of its brightness until it is viewed at a fairly steep 50-degree angle.
Color Shift from Below 32°
Color Shift from Above 31°
Brightness from Below 39°
Brightness from Above 37°
Black Level from Below 75°
Black Level from Above 75°
Great vertical viewing angle. Much like the behavior seen horizontally, this monitor's black level remains relatively constant off axis. While both the brightness and colors shift more rapidly than on a horizontal axis, they are better retained than the average monitor.
50% Std. Dev. 4.428%
50% DSE 0.133%
5% Std. Dev. 0.562%
5% DSE 0.057%
The Dell U3417W has a great gray uniformity, as seen on both the 50% and 5% gray test pictures. This is great for looking at large areas with uniform colors, such as browsing the web or watching YouTube videos. The only issues we can really notice on the 50% gray test picture are that the 2 sides of the screen look a bit darker than the center, but this is not very noticeable in use.
We tested the monitor with both the 'Uniformity compensation' set to 'Off' and to 'Calibrated'. We found out that the 50% gray uniformity was a bit better with the 'Uniformity compensation' set to 'Calibrated' (see test picture here), but it was the only place that this feature gave a better score. Overall, the monitor was better with the feature turned off, so we suggest you leave it set to 'Off'. In any case, you can try and see it for yourself if you feel that it can help, as it may be different between units.
Native Std. Dev. 3.047%
Std. Dev. w/ L.D. N/A
The black uniformity is poor. Backlight bleed is visible near all 4 corners, with the lower left corner being the worse and it is a noticeable in a dark room. Some faint vertical lines are also visible, but luckily those lines are not really noticeable when the monitor is displaying normal content.
Once again here we did test with and without the 'Uniformity compensation' feature. The black uniformity was actually better when the feature was turned off.
Picture Mode Multimedia
Luminance 200 cd/m²
Luminance Settings 75
Contrast Setting 75
RGB controls Default
Color Temperature 6,436 K
White Balance dE 2.18
Color dE 2.47
Gamma 2.11
The accuracy of the Dell U3417W 'out of the box' is great. We found the 'Multimedia' picture mode to be the most accurate of the picture mode available, but both the 'Standard' and 'custom color' were pretty close too, so any of the 3 picture modes could have been used and the accuracy would not be too bad.
Overall, when on the 'Multimedia' picture mode, the white balance and color dE are both under 3, which only people like professional that are used to work with calibrated monitors could really notice any problem here (most people would find it fine for sure). The color temperature is also very close to our 6500K target, and for the gamma, both the curve and value are really close to our target, which overall is great for most PC use and gaming.
Picture Mode Custom Color
Luminance 100 cd/m²
Luminance Settings 29
Contrast Setting 75
RGB Controls (high-97-99-97)-(Low-49-50-49)
Color Temperature 6,452 K
White Balance dE 0.81
Color dE 0.86
Gamma 2.16
After calibration, the Dell 3417W accuracy is excellent. The calibration was done on the 'Custom Color' picture mode, which was already good out of the box, but the calibration helped to fix the minor issues. Both the white balance dE and color dE were brought down under 1, which is under what most people would notice any irregularities. The colors are a bit more precise than before calibration, as they are now mostly on targets, as before calibration, the red, green and yellow were a bit over-saturated.
The Gamma, which was already not bad, did get marginally better and looking at the curve, we see that tracks a bit more closely, but overall it was already good before calibration. the color temperature did not change by much too, but like the gamma, it was already good out of the box.
You can download our ICC profile calibration here. This is provided for reference only and should not be used, as the calibration values vary per individual unit even for the same model due to manufacturing tolerances.
sRGB xy 96.7%
Adobe RGB xy 72.3%
Good SDR color gamuts. While it doesn't officially support the wider Adobe RGB color space, the Dell U3417W covers it a little better than average. Partly thanks to its factory calibration, it has no major issues reproducing the s.RGB gamut used in most applications.
sRGB in ICtCp 92.3%
Adobe RGB in ICtCp 74.6%
The Dell Ultrasharp U3417W covers SDR color volumes well. While its somewhat low contrast stops it from reproducing darker colors, its good coverage of standard gamuts allows it to reproduce the great majority of the colors in the standard RGB volume.
Wide Color Gamut No
DCI P3 xy N/A
Rec. 2020 xy N/A
HDR gamuts are not supported.
DCI-P3 in ICtCp N/A
Rec. 2020 in ICtCp N/A
HDR color volumes are not supported.
IR after 0 min recovery 0.00%
IR after 2 min recovery 0.00%
IR after 4 min recovery 0.00%
IR after 6 min recovery 0.00%
IR after 8 min recovery 0.00%
IR after 10 min recovery 0.00%
Perfect score on our image retention as no retention could be noticed at all while running our test.
Color Depth 8 Bit
The Dell U3417W has a very good performance when displaying our gradient test image. 8-bit banding is visible, but this is normal since it is an 8-bit monitor. Besides this, the gradient looks smooth and without any striking color banding. Overall, this is pretty good for a PC monitor.
Pixel row error 0.002%
Pixel column error 0.001%
The Dell U3417W does not produce a noticeable amount of color bleed. It is well suited for people that are particularly sensitive to it, or for artists that often work with large uniformly colored elements or grids.
The reflection handling is great. The curve results in some distortion of the reflections, which may be an advantage as it tends to diffuse point sources across the screen and reduce their intensity. The light-matte finish helps diffuse them further, so this should be great even in a fairly bright room.
Motion
80% Response Time 6.4 ms
100% Response Time 12.9 ms
Best Overdrive Setting Normal
Response Time Normal Response Time Fast
Very good pixel response time, which is great for watching fast moving content such as playing video games or watching sports. Most of the blur in the photo is due to 60 Hz persistence, which is a result of the relatively long 16.6ms frame time. There is only a very short blur following the moving logo, which is great. The 'Response Time Normal' setting was the fastest; the 'Fast' setting wasn't any faster and added a lot of bothersome overshoot (visible as an inverse ghosting following moving objects), so it's not recommended. Overall, the response time is similar to many other IPS monitors like the Dell U2717D, but not as good as some gaming IPS monitors like the Acer Predator XB271HU.
Flicker-free Yes
PWM Dimming Frequency 0 Hz
Black Frame Insertion (BFI) No
BFI Maximum Frequency N/A
BFI Minimum Frequency N/A
The Dell 3417W has a flicker-free backlight which is great as it produces comfortable, smooth motion. The backlight has a slight 60 Hz wobble, but the wobble isn't deep enough to be noticeable. Unfortunately, the monitor doesn't have a black frame insertion feature. This is disappointing because 60 Hz flicker can be useful to clear up fast motion such as when playing fighting or shooting games. It is very rare for a 60 Hz monitor to have BFI because many people find 60 Hz flicker bothersome, so this isn't too bad.
Variable Refresh Rate No
Native Refresh Rate 60 Hz
Factory Overclock N/A
Variable Refresh Rate No
G-SYNC Compatible No
VRR Maximum N/A
VRR Minimum N/A
VRR Maximum With OC N/A
VRR Supported Connectors N/A
The monitor only has a very common 60 Hz refresh rate, without any variable refresh rate feature like FreeSync (unlike the Samsung CJ791). While this is good enough for most usages, they all would benefit a little from a higher refresh rate. Gaming, in particular, will be disadvantaged by the mediocre refresh rate and lack of VRR.
Inputs
Native Resolution 17.2 ms
Non-Native Res @ Native Refresh 17.3 ms
Native Resolution @ 60 Hz 17.2 ms
Variable Refresh Rate N/A
10 bit HDR N/A
Black Frame Insertion (BFI) N/A
Non-native resolution tested: 2560 x 1080
Good low input lag, which should please all but the most competitive gamers. Unfortunately, the input lag varies considerably over time; the monitor skips a frame every ~21.6 seconds, so the input lag rises slowly over 21.6 seconds then falls back down to its lowest value. This varying input lag is subtle and shouldn't be noticeable to most people, but it does raise the average input lag to 17.2 ms; without the bug the input lag would likely be ~10 ms like the Dell U2715H.
Native Resolution 3440 x 1440
Aspect Ratio 21:9
Megapixels 5.0 MP
Pixel Density 109 PPI
Screen Diagonal 34.1"
Screen Area 415 in²
The Dell Ultrasharp U3417W monitor has an ultrawide 21:9 aspect ratio, a large 34" size and a sharp 1440p resolution; all of which are great for all usages. The ultrawide aspect ratio, in particular, is great for providing immersion while gaming, or for using two windows side by side during office use (see our recommendations for the best ultrawide gaming monitors).
DisplayPort 1 (DP 1.2)
Mini DisplayPort 1 (DP 1.2)
HDMI 2 (HDMI 2.0)
DVI No
VGA No
DisplayPort Out 1 (DP 1.2)
USB 4 (USB 3.0)
USB C No
Analog Audio Out 3.5mm 1
Microphone In 3.5mm No
Digital Optical Audio Out No
Analog Audio Out RCA No
Power Supply Internal
The 3.5mm analog line out can be used for headphones, but the volume can't be adjusted by the monitor itself.
There are also two USB Type-B hub inputs, either of which can be used to connect the four USB 3.0 inputs to a computer. This is explained in more detail in the Additional Features section below. Two of the three USB 3.0 inputs support the USB BC 1.2 charging standard, which allows them to provide more amps of current when charging.
Update 03/28/2019: The number of HDMI ports was incorrectly listed as 1. There are 2 HDMI 2.0 ports.
Features
Speakers Yes
HDR10 No
Multiple input display PIP + PBP
The Dell U3417W has speakers that can get decently loud, but not nearly as loud as headphones or dedicated speakers.
There is a DisplayPort Out on the back of the monitor for daisy chaining, meaning another monitor can be connected directly to the U3417W, so both monitors can be fed by one DisplayPort on a computer. How this works is that the computer uses DisplayPort Multi-Stream Transport to send two DisplayPort signals over one cable. These two video feeds are input into the monitor, which then sends one of the feeds its DisplayPort Out to a second monitor, allowing dual monitors using only one DisplayPort.
The monitor also has many features that make it useful as a shared display between two sources. It has both picture-in-picture (PIP) and picture-beside-picture (PBP) modes, each with a few sub modes; for example, the PBP Aspect Ratio mode shows both inputs side by side but preserves their aspect ratio, even if their aspect ratio is different. The monitor's EDID even has a (1720x1440) entry so an input can fully cover half the screen in PBP mode.
Another useful screen sharing feature is that the monitor's four USB ports can be shared between two computers. The USB ports can be fed by either one of the monitor's two USB Type-B hub inputs, and the hub inputs can be plugged into two different computers. Each hub input can be tied to a video input, such that when the DisplayPort is the active input the USB ports are fed by hub input 1, and when HDMI 1 is the active input the USB ports are fed by hub input 2, for example. This allows the four USB ports to be shared between two computers.
The monitor has a typical five button control scheme: one power button and four buttons to control the OSD. The buttons provide good tactile feedback but are so small and stiff that they can hurt your fingers when used a lot.