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Anyone else notice terrible tearing when watching a YouTube video expanded or full screen? Its horrible. Not even watchable.
 
Would using this monitor at 2560x1440 look better, worse, or the same as a similar spec'd native 27" 2560x1440 monitor?
 
Would using this monitor at 2560x1440 look better, worse, or the same as a similar spec'd native 27" 2560x1440 monitor?

*I typed this out before completely reading the question, but I think it's still helpful*

I have had my P2715Q for 2 weeks now (running off a late 2012 Mac Mini @ 2560x1440) and it's great. I was running a Dell 2407 WPF (which is now in portrait as a secondary display), and I can say with confidence that it definitely looks significantly better than that. Yes, it's not running at native, and that sucks, but the pixel density of the display of a 4k, 27-inch display at 2560x1440, beats out a native 24-inch 1920x1200 display by a fair amount.

That said, a native 2560x1440 would absolutely look better, you just wouldn't have any future-proofing. If you are going to invest in something, this is a really good choice.
 
1 week in and I already had my first issue with the P2715Q :(.

I went to my computer to wake it up from sleep. My other monitor (Dell 2407WFP) woke up but the P2715Q didn't.

First I thought "It must be off" but then I noticed the white power LED was on.

Then I thought "It must be set to the wrong input" so I tried to switched inputs but the buttons were not doing anything.

I then tried to shut the monitor off and on again but even the power button would not do anything!

I had to manually unplug the power cord to restart the monitor, at which point it started working normally again. I've never had such a freeze issue with my other monitor which I've had for 8 years now.

Hopefully this won't happen often. At least it might be a software bug a firmware update could solve I guess...

Try turning off DDC/CI in the monitor's OSD->Menu->Others
 
Can't be better than native resolution. Don't post misleading info.
It will definitly be worse. Question is by how much. Only 1080p is awesome on 4k cause it's exactly x4 scaling.

Of course it can be, the 4K monitor is always running at native resolution regardless of what you set the "looks like" resolution to be (unless you put a lot of effort to bypass HiDPI). A 4K monitor running at "looks like" 2560x1440 that draws a piece of text on the screen at 72 point will display the exact same number of pixels as a native 1980x1080 monitor that draws the same text at 108 point. However, there are a few apps, like Photoshop, as well as apps with low resolution bitmap artwork that will look a bit off at the 2560x1440 resolution. I base this on actually trying four different models of 4K monitors with the 2560x1440 resolution set and comparing them side by side to a Thunderbolt display. I do agree that running at precisely 2X scaling with 1980x1080 will always look great, though.
 
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Try turning off DDC/CI in the monitor's OSD->Menu->Others

Interesting! Did you find this solved the problem for this monitor or was this based on solving wake from sleep issues with other monitor models? I'll disable DDC for one of my two monitors and see if results in it waking while the other one doesn't. If so, that should confirm it as a solution.
 
Interesting! Did you find this solved the problem for this monitor or was this based on solving wake from sleep issues with other monitor models? I'll disable DDC for one of my two monitors and see if results in it waking while the other one doesn't. If so, that should confirm it as a solution.

DisplayPort/MDP on monitors can be finicky when it comes to their sleep/awake status depending on the operating system, brand of monitor/firmware, DisplayPort cable itself and on... and on... and on. DDC/CI allows the operating system itself or third party software to have direct control of the monitor's OSD functionality and power status.

I have had success (disabling DDC/CI) in the past on my Windows development machine with multiple monitors of different input types (DVI, DVI-D DisplayPort) being connected to a single graphics card at the same time and having the DisplayPort monitor refusing to come out of power save mode properly. If it works for Windows then it can't hurt to try it on the Mac.

If that does not work my next suggestion would be to replace the included DP to MDP cables that came with the Dell monitors with regular MDP cables.

The only Mac I have in my possession right now isn't capable of driving the P2715Q - so I couldn't test the power save issue on the Mac side even if I wanted to.
 
Would using this monitor at 2560x1440 look better, worse, or the same as a similar spec'd native 27" 2560x1440 monitor?

There are two ways to use that resolution: scaled or "low resolution".

Scaled tells applications that they're at 2560x1440 but actually renders it at 3840x2160 and outputs it to the monitor at 3840x2160. It looks lovely and definitely better than a 2560x1440 monitor.

"Low resolution" runs everything at 2560x1440 and outputs it to the monitor at 2560x1440. The monitor then scales it up to 3840x2160. That doesn't look as good as a native 2560x1440 monitor, it looks blurry.
 
Would using this monitor at 2560x1440 look better, worse, or the same as a similar spec'd native 27" 2560x1440 monitor?

I have the Apple TB display and the P2415Q right next to it, so it isn't an apples to apples comparison. For text, I'd give the nod to the Dell because there simply are no visible pixels at my viewing distance, but they're still clearly seen on the Apple, both running 2560x1440 (Dell scaled). For just about everything else though, Apple TB gets the win from me.

After doing some color tests last night in a darkened room, I noticed the so-called yellow tint in the upper left corner. It's definitely there on mine. Not nearly like the pic posted on the previous page, which is deceiving due to the BG wallpaper, but it's there. Thinking about an RMA now. Whites are just not uniform across the screen, but they sure are on the Apple TB display.
 
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I have the Apple TB display and the P2415Q right next to it, so it isn't an apples to apples comparison. For text, I'd give the nod to the Dell because there simply are no visible pixels at my viewing distance, but they're still clearly seen on the Apple, both running 2560x1440 (Dell scaled). For just about everything else though, Apple TB gets the win from me.

After doing some color tests last night in a darkened room, I noticed the so-called yellow tint in the upper left corner. It's definitely there on mine. Not nearly like the pic posted on the previous page, which is deceiving due to the BG wallpaper, but it's there. Thinking about an RMA now. Whites are just not uniform across the screen, but they sure are on the Apple TB display.

Been looking around for a good IPS display for a couple of months now. Interested in what more makes the TB win for "just about everything else"?Would love a pic for comparison!
 
I have the Apple TB display and the P2415Q right next to it, so it isn't an apples to apples comparison. For text, I'd give the nod to the Dell because there simply are no visible pixels at my viewing distance, but they're still clearly seen on the Apple, both running 2560x1440 (Dell scaled). For just about everything else though, Apple TB gets the win from me.

Yes, I think that's what it comes down to and why I was disagreeing with the other posters on the subject. In terms of 4K "looks like" 2560x1440 versus native 2560x1440, like the Thunderbolt Display, anything on screen that's basically vector graphics, such as font text, is going to look better on the 4K display because it's just being draw with more pixels, so more detail. Anything that's heavily bitmap image based is going to be iffy because it's being scaled to a fractional resolution (1.5X). Photoshop is going to be the best example of an app that won't look as good rendered at that scale. So, I'll amend my answer to how scaled 2560x1440 looks to "sometimes better" and "sometimes worse".

BTW, this document on Apple's site explains exactly how Apple handles HiDPI in OSX:

High Resolution Guidelines for OS X

Most if it is meant for developers, but most people should be able to follow the stuff in the "High Resolution Explained" section.
 
Been looking around for a good IPS display for a couple of months now. Interested in what more makes the TB win for "just about everything else"?Would love a pic for comparison!

Pics? Don't know how...just kidding. Might get around to it, but really, none required. White uniformity/yellow tint is not news with Dell, or many other mid to lower tier displays. Their forums have numerous threads mentioning it on a variety of models, including the U series. Of course, Dell often says it is normal and/or within their limits. I've also seen responses that say, if you wanted a better monitor, you should have bought a professional one.

The advantages of high pixel density are patently obvious, but other than that, and of course, connectivity, the build quality, color uniformity, compatibility, and on and on are leaps and bounds better on the Apple TB display. That isn't surprising given the cost, QC, and attention to the details by each company. Given that your display is where all of your computer work is done, and comes to fruition, SJ put enormous emphasis on the display, and it shows up, pun intended. And when it comes to support, it's like you're on opposite sides of the Earth, which in this case, you literally probably are.

That isn't to say the P24 and 2715Q aren't good, they are...for the money. However, they aren't in the same league with Apple. I can easily work around the occasional sleep lockup, but having the screen lean towards yellow/warm and a little darker from left to right is not something you can fix. One guy suggested futzing with various controls until the offending area was white. Yeah right, at the expense of the 2/3 to 3/4 of the screen that looks OK. Not a solution.

It isn't fresh glue that has yet to cure, as was the case with some iPhones a while back, so it isn't going away. My only options are an RMA, and risk getting one as bad or worse, or a refund and start all over with double or triple the price and get an NEC or Eizo, or do my color work on the TB display or right side of the Dell if 1:1 isn't needed. Haven't decided, but the more I glance at the P2415Q, the more I see the discrepancy.
 
Is anyone running a Retina MacBook Pro 15" (with NVIDIA 750) with two 4K monitors (i.e. two P2415Q or two P2715Q monitors)?

What is the best way to connect them to the MacBook (i.e. does one need to connect the first via TB/mDP-->DP & the second via HDMI-->HDMI, or can you connect them both via TB/mDP-->DP).

Does the MacBook need to be in clamshell mode, or can you keep it open as a third screen?

If you have to connect the second 4K monitor via HDMI, can you choose between higher resolution at 30Hz and down-scaled resolution at 60Hz (so you could alternate between the two for different tasks), or will the second 4K monitor only work at 30Hz no matter the configuration of the scaling?

Thanks!
 
Is anyone running a Retina MacBook Pro 15" (with NVIDIA 750) with two 4K monitors (i.e. two P2415Q or two P2715Q monitors)?

What is the best way to connect them to the MacBook (i.e. does one need to connect the first via TB/mDP-->DP & the second via HDMI-->HDMI, or can you connect them both via TB/mDP-->DP).

Does the MacBook need to be in clamshell mode, or can you keep it open as a third screen?

If you have to connect the second 4K monitor via HDMI, can you choose between higher resolution at 30Hz and down-scaled resolution at 60Hz (so you could alternate between the two for different tasks), or will the second 4K monitor only work at 30Hz no matter the configuration of the scaling?

Thanks!

Lots of discussion about what works, and doesn't work, with UHD and the MBP here:

https://discussions.apple.com/thread/6516153
 
Animations

So no one is seeing reduced frame rates/lag for animations like mission control and show desktop with this monitor on Yosemite?
 
One thing I haven't seen does anyone know the gamut of the 27in? I'm used to wide gamut with my current NEC display and don't know if I want to go back to standard sRGB or not.

An alternative monitor I've been eyeballing is the new LG 31MU97-B which is selling for $1,399 USD. It's nearly 2x the cost but it's larger and almost 100% aRGB coverage.
 
One thing I haven't seen does anyone know the gamut of the 27in? I'm used to wide gamut with my current NEC display and don't know if I want to go back to standard sRGB or not.

An alternative monitor I've been eyeballing is the new LG 31MU97-B which is selling for $1,399 USD. It's nearly 2x the cost but it's larger and almost 100% aRGB coverage.

Depending on the mac you have, the increase in pixels might not make a difference. Cinema 4k is not supported on the nMP's.
 
Depending on the mac you have, the increase in pixels might not make a difference. Cinema 4k is not supported on the nMP's.

Thanks. I did read up that the 10.10.1 updated allows 50hz at full resolution now on the LG. My main reason for getting that would be higher adobe RGB coverage not the pixels. From everything I've read the Dell is only sRGB but even a dell CS rep couldn't tell me the adobe RGB coverage.
 
Thanks. I did read up that the 10.10.1 updated allows 50hz at full resolution now on the LG. My main reason for getting that would be higher adobe RGB coverage not the pixels. From everything I've read the Dell is only sRGB but even a dell CS rep couldn't tell me the adobe RGB coverage.

Really?! Thats great! Didn't know they added support for it. Thanks!
 
Animations

Well, if anyone has the same issue that I had with animation lag, updating to 10.10.2 seemed to alleviate it a lot. Still a little lag but much better. Evidently a lot of 5k iMacs are experiencing lag in mission control Yosemite as well.
 
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