The Dell UltraSharp U2515H is a versatile IPS LCD monitor with wide viewing angles and decent picture quality. It gets bright, and it sits on a very good stand with a wide set of adjustments. It also remains accurate when viewed at an angle, which is great. Its main downside is the low contrast ratio and cloudy blacks.
The design of the Dell U2515H is good and the monitor looks very professional. It looks very similar to most other Dell monitors with a rectangular stand that provides good support with a relatively small footprint. It is also possible to rotate, swivel and tilt the monitor to suit.
The familiar Dell stand has a small rectangular footprint which supports the monitor well. It has a gap at the rear of the stand for cable routing, which is good.
Like most other Dell monitors, the Dell U2515 has a wide range of ergonomic adjustments. The monitor can swivel, pivot and tilt which is great, but the height adjustment range may be a bit limiting for some people.
The rear of the Dell Ultrasharp U2515H is quite simple but looks good. There is a gap at the rear of the stand for cable management as shown here.
The borders of the Dell Ultrasharp U2515H monitor are thin and look good, with only a small gap between the border and the screen.
When viewed from the side, the monitor is quite thin. The stand doesn't extend too far behind the monitor so it can be placed quite close to a wall.
The Dell Ultrasharp U2515H monitor has an average picture quality. The mediocre contrast ratio and awful black uniformity result in a sub-par experience when the monitor is used in a dark room, as blacks look gray and dark scenes look washed out. Fortunately, when the monitor is used in a bright environment like an office space, the monitor can get bright enough to fight glare and can deal decently with reflections. Gray uniformity is excellent and dirty screen effect is not a problem on this monitor.
Viewing angles are good and picture quality remains the same even if you look at the monitor from a sharp angle. Out of the box, the monitor's accuracy is great and even better when calibrated and covers the sRGB standard well. The monitor does not have more advanced features like HDR and local dimming, but it offers great performance for office work or home use.
The monitor has a mediocre contrast ratio, but relatively good for an IPS monitor. As with other IPS monitors, dark room performance is sub-par, as blacks tend to look more gray than really black when viewed in the dark. When used in a brighter room, like an office, the Dell Ultrasharp U2515H is a much better performer and is on par with the bigger U2715H, as both have almost the same contrast ratio.
The Dell U2515H does not have a local dimming feature. The video is for reference only.
Update 08/31/2018: Corrected the backlight from 'Direct' to 'Edge' lighting.
This Dell monitor's brightness is great. It gets bright enough for almost every environment, regardless of the average picture level or time.
HDR is not supported.
Decently wide horizontal viewing angles. As is common with most IPS type LCD monitors, the Dell Ultrasharp U2515H maintains its picture quality quite well at an angle. Most notable are the blacks which don't shift significantly when viewed from an angle.
Passable vertical viewing angle. The U2515H's colors and brightness shift only slightly faster than horizontally giving it a relatively large sweet spot. However, the blacks shift significantly more. This is possibly part of the excessive clouding shown in our black uniformity test.
The gray uniformity of the Dell Ultrasharp U2515H is remarkable. Looking at the 50% test picture, we can see that the 4 corners are a bit darker than the rest, and we can also notice a slightly warmer patch near the center of the screen. Overall, these uniformity issues are really faint and do not cause any dirty screen effect which is great for browsing the web or viewing videos.
Looking at the 5% gray test uniformity picture, we can see in in the top left corner some backlight bleed which is also visible on the black uniformity picture. Other than this though, the screen is uniform which is good for viewing dark scenes in a dark room.
The Dell U2515H has a terrible black uniformity. Backlight bleed is prominent in the top left corner, but also around the edges near it. Some flashlighting is also visible near the bottom right corner. Overall, this results in a worse dark scene performance as the blacks appear blotchy.
Out of the box, the U2515H monitor has a great accuracy, that is when set on to the 'Standard' picture mode ('Custom color' and 'Multimedia' are also reasonably accurate). The white balance dE and color dE are below the limit were the inaccuracy become apparent to most enthusiasts, which is good for people who do not intend to calibrate their new monitor. The gamma is not far from our 2.2 target and looking at the curve, we see that it does not deviate too much from the target curve. Finally, the color temperature is not too far from our 6500K target. Overall, this monitor could be used by most people without any calibration, which is good.
After calibration, the accuracy of the Dell Ultrasharp U2515H is remarkable. Both the white balance dE and color dE are around 0.5, which is by any means, almost unnoticeable. To do the calibration, we used the 'Custom Color' picture mode, as it is this mode that allowed us to change the monitor RGB balance. The gamma curve was also corrected slightly to match more closely the target curve, and the overall value is now a bit closer to our 2.2 target. As for the color temperature, after calibration, it was much closer to our 6500k target.
You can download our ICC profile calibration here.
The Dell U2515H has no issues covering the standard RGB color gamut almost perfectly. Unfortunately, its reproduction of the wider Adobe RGB gamut is not sufficient for more professional use.
Good coverage of SDR color volumes. The volume matches its color gamut performance. As is common with most monitors, the Dell Ultrasharp U2515H cannot display darker tones due to its low contrast ratio.
The monitor does not support HDR color gamuts.
The monitor does not support HDR color gamuts.
The Dell U2515H is not prone to image retention, as our test indicates, and is in line with the result that we had with the U2715H.
The Dell Ultrasharp U2515H can display our gradient test image very well, as not much color tone issues can be noticed, besides the 8-bit banding due too the limitation of this monitor. Overall, this is a great performance, and the small problems are not enough to cause visible banding while watching regular content.
Thankfully, the monitor does not produce any color bleed when showing large stripes of uniform colors.
Motion looks decent on the Dell Ultrasharp U2515H, but not as good as on many gaming monitors. It has fast pixel response time and a flicker-free backlight, but its fixed 60 Hz refresh rate is only average for most usages, and only mediocre for gaming.
Very fast response time, which is great for viewing fast motion such as sports, games, or even browsing web pages. The ghosting trail following the logo is very short and hard to notice, which is great and most of the blur in the photo is due to 60 fps persistence. 'Response Time Normal' is the most balanced overdrive setting; the 'Fast' setting is a little faster but adds significantly more overshoot. Those who don't mind overshoot artifacts may prefer the 'Fast' setting, but most people will be better served by 'Normal'.
The Dell Ultrasharp U2515H monitor has a flicker-free backlight and does not use PWM to dim, which is excellent as it results in smooth motion. The monitor lacks a black frame insertion feature, which is unfortunate as introducing flicker can help to clear up blur due to image persistence with fast paced content. This is a common result though for 60 Hz monitors as many people find 60 Hz flicker bothersome.
The Dell Ultrasharp U2515H monitor only has a very common 60 Hz refresh rate and lacks a variable refresh rate feature like FreeSync. This is good enough for most usages, but all usages would benefit from a higher refresh rate. For gaming, in particular, this refresh rate is only mediocre.
The Dell U2515H has a sharp 1440p resolution and an ordinary 25" size, which should still be great for most usages. It also has very low input lag, which will please all but the most competitive gamers.
Lowest input lag possible at the center of the screen, when the monitor is displaying an alternative resolution at its native refresh rate. The non-native resolution tested depends on the native resolution of the monitor, following this pattern unless otherwise specified in the Input Lag text:
|Native Resolution||Non-Native Resolution Tested|
Great low input lag, which will please all but the most competitive gamers. The input lag for non-native resolutions is the same as normal, which is good.
The Dell Ultrasharp U2515H monitor has a sharp 1440p resolution but only an ordinary 25" size, being not quite as large as its big brother the U2715H. Still, this resolution and size will be great for most usages.
The monitor has a DisplayPort Out for daisy chaining with another monitor, which allows both monitors to be fed from one DisplayPort on a computer. The monitor's HDMI ports support MHL.
The Dell Ultrasharp U2515H has all the standard features of a monitor such as adjustable overdrive and image settings, arranged in a well organized on-screen display. It also has a DisplayPort Out for daisy chaining with a second monitor, allowing a computer to have dual monitors using only one DisplayPort.
The monitor has a DisplayPort Out which can be used to daisy chain with another monitor. This allows one DisplayPort on a computer to send video output for both monitors to the U2515H, then the Dell 2515H sends video to the second monitor, effectively allowing dual monitors using only one DisplayPort.
On the lower right corner of the monitor, there are five capacitive buttons for controlling the OSD and power. These soft touch buttons can take some getting used to as they lack any feedback that they've been pressed. There is an option in the OSD to make the monitor chirp when the buttons are pressed, but this can be annoying.
We tested the U2515H, which is a 2015 model 25" Ultrasharp monitor. There are many other sizes and year variants of the Dell Ultrasharp monitors, listed below.
If someone comes across a different type of panel or if their Dell U2515H 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.
The Dell U2515H is a decent monitor for a wide range of usages due to the decent picture quality, wide viewing angles and good range of ergonomic adjustments. While it does perform decently across the board, for a specific use there may be better competition. See our recommendations for the best monitors for PS4, the best 24-25 inch monitors, and the best 1440p monitors.
The Dell U2518D is better than the Dell U2515H. The Dell U2518D has HDR support. On the other hand, the Dell U2515H has somewhat better input lag that makes it very responsive and will be appreciated mostly by gamers.
The Dell U2715H is a bit better than the Dell U2515H due to its larger screen size that allows you to work more comfortably. Note that the two monitors have the same resolution. The score differences can be attributed to panel variance.
The LG 27UK650 is better than the Dell U2515H. The Dell U2515H has better ergonomics that easily allow you to place it comfortably. On the other hand, the LG 27UK650 has a slightly higher refresh rate, larger size, and a marginally better vertical viewing angle that makes it more suitable for almost every use. Finally, the LG 27UK650 offers HDR support, albeit not great.
The Dell P2417H and the Dell U2515H offer very similar performance. The U2515H has a higher native resolution and is a bit larger, but has worse black uniformity than the P2417H. If you want a larger screen, the U2515H is a better choice.
The Dell U2515H is more suitable for a room with wide seating. On the other hand, the Acer GN246HL is a very fast monitor with very good motion features. The Dell U2515H has better viewing angles and significantly better ergonomics so you can position it to your liking. Also, it has a higher resolution and marginally larger size, giving you more detail to work on. The Dell U2515H also has slightly lower input lag which is great for gaming.
The Dell U2515H is much better than the Acer G257HU. The design of the U2515H is far superior, with far more ergonomic adjustments as well as VESA mounting ports. The U2515H has much better gradient handling with less banding, and is free of distracting temporary image retention. The U2515H also has better features, including the ability to daisy chain to another monitor, as well as USB charging ports.