Why image flicker 10 if it’s not DC flicker-free?? facepalm
I’d put eye care as a separate section, as it’s important for some people, and give 10 only to DC flicker-free monitors
Hi, actually this monitor is flicker-free, and doesn’t use pulse-width modulation for dimming, which is why it scores 10/10. You can learn more about how we test flicker in our article about how we test image flicker.
Why image flicker 10 if it’s not DC flicker-free?? facepalm
I’d put eye care as a separate section, as it’s important for some people, and give 10 only to DC flicker-free monitors
I got another unit manufactured in March 2025 and it has the same electrical buzzing noise as many others have noticed about this model. This issue is still not fixed by the manufacturer. Buyer beware!
One possible, but dumb solution to the coil whine is to add a load to the USB connectors. Right now I am charging a device that draws 1.05A and this effectively lets me lower the brightness from 85 to 55% before the whine kicks in.
I can confirm this as a solution. For me, two solutions exist at the moment. One is to have brightness at min 80. The other, if you need lower brightness is to charge your phone, or anything else that consumes some power. With my phone charging I can lower the brightness as much as I want. Since the issue seems to happen when the power source is underused
I’m currently going through the 2nd unit. Returned the first one in the hope that the 2nd unit has no coil whine. Well, the 2nd one also has coil whine, although it seems a bit less audible. What I have noticed is that with brightness above 79 the whine disappears. And even below that, when there is coil whine it is very slight, and you need to be in a very quiet room to hear it. If I just open my window to have some background noise (wind, birds, etc.) the there’s no change you will hear it.
The coil whine aside, there are more bad things about this monitor. The stand is very flimsy/plasticky. And depending on how much your desk moves, the display can wobble like crazy, whenever you type. If you have a more sturdy desk it might behave better. I’ve tried it on 2 desks, and while it still wobbles, it does wobble less on one of the desks.
Another thing that is not so good is the anti reflective coating. It’s not that good, and the only way I can use the monitor is with light sources (window, lamp) coming from the back if the monitor. If they are lateral or facing the display, the reflection is distracting.
The above being said, the display is really nice, I use it for office/programming, and I find it very easy on the eye. I’ve also tried the S2725QC and found that one to be much harsher on the eyes compared to the Untrasharp. If the coil whine does not get worse with time I would tend to keep the Ultrasharp, ignoring all it’s other disadvantages. The display is simply so good.
Also, the 120 Hz refresh rate really makes a difference when you scroll thorough code pages. 60 Hz just makes me dizzy when scrolling.
It’s a shame the competition is incapable of offering a proper 120 Hz 4k or 5k display on a 27 inch.
This monitor has very audible coil whine at all OSD brightness levels below 90% or so. RTINGS is lying about this issue as usual: “we didn’t hear any coil whine with any type of content or at any brightness level.”
Yes, it’s insane. From now on, RTINGS should add a new testing category specifically for this issue.
Update: Added in the Popular Monitor Comparisons section that the Dell S2725QC is a lower-end, cheaper monitor with fewer features.
Hi, actually this monitor is flicker-free, and doesn’t use pulse-width modulation for dimming, which is why it scores 10/10. You can learn more about how we test flicker in our article about how we test image flicker.
Why image flicker 10 if it’s not DC flicker-free?? facepalm I’d put eye care as a separate section, as it’s important for some people, and give 10 only to DC flicker-free monitors
I got another unit manufactured in March 2025 and it has the same electrical buzzing noise as many others have noticed about this model. This issue is still not fixed by the manufacturer. Buyer beware!
I can confirm this as a solution. For me, two solutions exist at the moment. One is to have brightness at min 80. The other, if you need lower brightness is to charge your phone, or anything else that consumes some power. With my phone charging I can lower the brightness as much as I want. Since the issue seems to happen when the power source is underused
I’m currently going through the 2nd unit. Returned the first one in the hope that the 2nd unit has no coil whine. Well, the 2nd one also has coil whine, although it seems a bit less audible. What I have noticed is that with brightness above 79 the whine disappears. And even below that, when there is coil whine it is very slight, and you need to be in a very quiet room to hear it. If I just open my window to have some background noise (wind, birds, etc.) the there’s no change you will hear it. The coil whine aside, there are more bad things about this monitor. The stand is very flimsy/plasticky. And depending on how much your desk moves, the display can wobble like crazy, whenever you type. If you have a more sturdy desk it might behave better. I’ve tried it on 2 desks, and while it still wobbles, it does wobble less on one of the desks. Another thing that is not so good is the anti reflective coating. It’s not that good, and the only way I can use the monitor is with light sources (window, lamp) coming from the back if the monitor. If they are lateral or facing the display, the reflection is distracting.
The above being said, the display is really nice, I use it for office/programming, and I find it very easy on the eye. I’ve also tried the S2725QC and found that one to be much harsher on the eyes compared to the Untrasharp. If the coil whine does not get worse with time I would tend to keep the Ultrasharp, ignoring all it’s other disadvantages. The display is simply so good. Also, the 120 Hz refresh rate really makes a difference when you scroll thorough code pages. 60 Hz just makes me dizzy when scrolling. It’s a shame the competition is incapable of offering a proper 120 Hz 4k or 5k display on a 27 inch.
Yes, it’s insane. From now on, RTINGS should add a new testing category specifically for this issue.
Buzzing while turned off. 27" and 32" with same issue. ITS NOT BEST MONITOR EXCEPT IF YOU DEAF.