Dell P2715Q and P2415Q 4K IPS Displays

[VirtualRain]

Dell P2715Q and P2415Q 4K IPS Displays

Yes, 2560x1440 is a scaled option and is supported, however it does look quite fuzzy compared to HiDPi resolutions. I would probably opt for a display with a native 1440p resolution if that was the resolution I was planning to run most of the time.

Agreed that simply upscaling 2560x1440 to 4K will look terrible. However 2560x1440 HiDPI using Apples scaling algorithm (which renders the desktop at 5120x2880 before down sampling it to 3840x2160) on a 4K display is sharper than native since you're taking advantage of the double-res retina artwork (icons/chrome) and rendering text with more pixels. So, with Apple, the more pixels you have, the better... So a 4K (or ideally 5K) display set to an effective 2560x1440 desktop will be the best choice for anyone wanting to run that resolution most of the time.

 

[Ryan0751]

Agreed that simply upscaling 2560x1440 to 4K will look terrible. However 2560x1440 HiDPI using Apples scaling algorithm (which renders the desktop at 5120x2880 before down sampling it to 3840x2160) on a 4K display is sharper than native since you're taking advantage of the double-res retina artwork (icons/chrome) and rendering text with more pixels. So, with Apple, the more pixels you have, the better... So a 4K (or ideally 5K) display set to an effective 2560x1440 desktop will be the best choice for anyone wanting to run that resolution most of the time.

Does anyone have a direct comparison of the P2715Q to a native 2560x1440 monitor (such as the Thunderbolt display), that can comment on if the text looks better or worse than the thunderbolt display?

I'll consider the jump, but only if it's an improvement. As a coder, I need the screen real-estate (1080 is a no-go for me), and the quality of text is key.

 

[wakele]

So, just received my Dell 2415q 4k monitor and plugged it into my MBPr 13" via the included display port to mini display port cable. Using SwitchResX I set a custom resolution of 3840x2160 with a pixel clock of 450MHz. Rebooted and the new display runs perfectly at 51Hz with a 1080p HiDPi setting. Very pleased, since I was anticipating a clunky UI with the lower refresh rate. Glad it's not really noticeable (for me anyway), and stoked that I can't see any pixels which is all I was after since adapting to the retina screen of the macbook.

-Seth

Hello! I have an issue with this screen in my mac mini 2014 with iris graphics. Could you help me? I have working right now the same configuration (52 hz though) but with a weird combination of dp+hdmi plugs connected, so macos thinks is working with multiple screens (it worths since the quality of the image is AWESOME). I don't know why, the system doesn't recognize rigth my screen when connected to dp only, so doesn't let me choose 1080 hiDpi, only crappy resolutions that make look the os really bad. When only connected to HDMI, it recognizes well the screen, but, of course, only 4k and 30hz...
Only when I use they both cables, and I try the custom resolution for the 4k 52hz in switchresx, then the system detects both different connected screens (actually the same) and then I choose the dp as the primary. I know...this is not the ideal solution...but really... after getting nuts for some days trying and not being able to find a solution, I decided to leave the system working like that...The only bad point, appart from having two wires there...is that sometimes I loose the mouse, since it goes to the other "virtual" screen (HDMI). All this is nothing so annoying, since it is only a corner, but of course, improvable.
Any idea? Maybe somehing in my screen is bad? Could you show your setup for switchresx, in my case is 1080 hiDpi and 52hz, not 1080p hiDpi and 51hz (is there any difference between 1080 and 1080p?).

 

[mjfutures]

What do you mean by lag?

Mouse pointer lag or moving a window feeling laggy are likely refresh rate related or an overall signal delay due to input processing.

"Fast" vs "Normal" will improve the liquid crystal pixel response rate (grey to grey response time) by overdriving the transistors which is relevant for rapid pixel changes (e.g. Gaming) and usually comes at the expense of image quality. This setting won't make any difference on a regular OS desktop (other than a possible reduction in contrast or adding trails to moving objects).

I was just curious cause on the Mac Pro the screen just blazes but being nit-picky on the rMBP mid2014 with 2gb gpu, I feel a tiny bit of window lag when resizing windows or scrolling in my VM's.

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Does anyone have a direct comparison of the P2715Q to a native 2560x1440 monitor (such as the Thunderbolt display), that can comment on if the text looks better or worse than the thunderbolt display?

I'll consider the jump, but only if it's an improvement. As a coder, I need the screen real-estate (1080 is a no-go for me), and the quality of text is key.

Having both the Dell P2715Q and the Apple 27" Thunderbolt Display the text clarity on the Dell is worthy of picking it up. The text pops and is crystal clear on the 4K, it makes the Apple display look "grainy" in my opinion. The Dell looks like an extension of my mid-2014 retina macbook pro screen if that helps give a reference.

 

[macsplusmacs]

mjfutures, what's your favorite rez for working with text mostly?

 

[VirtualRain]

Dell P2715Q and P2415Q 4K IPS Displays

Does anyone have a direct comparison of the P2715Q to a native 2560x1440 monitor (such as the Thunderbolt display), that can comment on if the text looks better or worse than the thunderbolt display?



I'll consider the jump, but only if it's an improvement. As a coder, I need the screen real-estate (1080 is a no-go for me), and the quality of text is key.

I have both a 27" Thunderbolt Display at work and the Dell 27" 4K at home. I'm not sure why there is doubt that more pixels is better, but I can try to take a macro photo of both to prove it. I run my 4K at home at 3008x1690 and it's still imperceptibly as sharp as 2x "Best for Display". If you want to see how Apple scaling works on high pixel density displays go to a retailer that sells iMacs or MacBooks and play with the scaling on a retina display... You will be sold instantly.

 

[tomislavf]

Could someone please post some photos of 27" running at 1080p. I just want to know if the 27" is "too big" for 1080p and if I should go for a 24" instead. How's the text sharpness compared to a Macbook Pro Retina display?

 

[Giev]

I have both a 27" Thunderbolt Display at work and the Dell 27" 4K at home. I'm not sure why there is doubt that more pixels is better, but I can try to take a macro photo of both to prove it. I run my 4K at home at 3008x1690 and it's still imperceptibly as sharp as 2x "Best for Display". If you want to see how Apple scaling works on high pixel density displays go to a retailer that sells iMacs or MacBooks and play with the scaling on a retina display... You will be sold instantly.

I have persoanly been sold already on a 4K HiDPI like setup. My only concern is that how/if the highr end 15inch rMBP can handle that resolution since as much as I enjoy the high res, any kind of lag (mouse lag, quick browsing, etc) would totally ruin it for me. Thats the same reason I was reluctant to go for the first gen of retina MBPs.

As someone how has both setups you are in the perfect position to compare! Can you please comment on that?

I am realy going back and forth between the Dell P2715Q and the U2715H.

Thanks,

 

[VirtualRain]

Dell P2715Q and P2415Q 4K IPS Displays

I have persoanly been sold already on a 4K HiDPI like setup. My only concern is that how/if the highr end 15inch rMBP can handle that resolution since as much as I enjoy the high res, any kind of lag (mouse lag, quick browsing, etc) would totally ruin it for me. Thats the same reason I was reluctant to go for the first gen of retina MBPs.



As someone how has both setups you are in the perfect position to compare! Can you please comment on that?



I am realy going back and forth between the Dell P2715Q and the U2715H.



Thanks,

I don't experience any lag using my rMBP or Dell 4K displays compared to non retina displays. Why would you even think there is lag? Drawing a 2D screen is about as basic as it gets (even at high resolution) for a modern GPU. But don't take my word for it... Try a retina display yourself.

 

[macsplusmacs]

Ok. I'm sold.

Going to hunt down any coupons this weekend (if I can find any that have not expired) and then place my order for the 27".

I need screen real-estate and as much as I love my retina 15" macbook, i feeling like I am coding in a fish bowl compared to my old 27" iMac. (But i need portability otherwise I would have sold this and bought a 5K iMac.)



Edit: Oh yeah, forgot to mention I hope the text is so clear I won't need glasses for at least another year or two !!!LOL

 

[mjfutures]

I have Mac Pro's 2013, latest Retina Macbook Pro, and a flurry of high end screens. Although the lag is nit-picky on the Retina Macbook Pro, I would say the screen doesn't have as quick of refresh as my non-4k monitors that I also use on the Retina Macbook Pro. Things such as resizing the App Store window even feel a nit-picky bit slower on the 4k. On the Mac Pro 2013 I don't notice it. And its by no means bad enough that I wouldn't use it but it does exist in my instance. I'm using it in clamshell mode. 2560x1440 is resolution I use the most and its at 60hz.

I just opened App Store window and if I drag my mouse to make it larger it takes a second to catch up to me. As someone who demands instant response that irritates me..

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not sure if this shows lag or not but i just made this video. rMBP App Store Resize

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Ok. I'm sold.

Going to hunt down any coupons this weekend (if I can find any that have not expired) and then place my order for the 27".

I need screen real-estate and as much as I love my retina 15" macbook, i feeling like I am coding in a fish bowl compared to my old 27" iMac. (But i need portability otherwise I would have sold this and bought a 5K iMac.)



Edit: Oh yeah, forgot to mention I hope the text is so clear I won't need glasses for at least another year or two !!!LOL

I can get the 27 for 546/shipped with 5yr warranty.... tax free, but since we don't know each other probably not going to work to send you one lol.

 

[macsplusmacs]

cool video. thx!

everything is so crisp!

i ran the video in full screen mode on an older iMac 27", it looked like everything was big though.

what rez did you record that in? 2560x1440? if so i'm a little bummed since there would be much less room then on a basic 27" non retina. But it looks like a lower rez then that maybe?

lag not a problem for me. i agree.

edit: that's a steal at that price. why don't i know you? if you have a fav. dell coupon site feel free to let me know though.

 

[mjfutures]

cool video. thx!

everything is so crisp!

i ran the video in full screen mode on an older iMac 27", it looked like everything was big though.

what rez did you record that in? 2560x1440? if so i'm a little bummed since there would be much less room then on a basic 27" non retina. But it looks like a lower rez then that maybe?

lag not a problem for me. i agree.

edit: that's a steal at that price. why don't i know you? if you have a fav. dell coupon site feel free to let me know though.

Here is quick video at 3840x2160 --- that 1st video was 2560x1440.3840x2160

one last one @ display default just to see crispness of icons Display Default

 

[macsplusmacs]

thank you so much! it was great to see what 3840x2160 "in real life" before I bought mine.

 

[justinrlee]

Just picked up a P2715Q (from the MS store) to go with my Late 2013 15" rMBP (GeForce GT 750M, Yosemite 10.10.1). For some reason I can't get the Dell to display 3840x2160 @ 60Hz.

Here's what I've done:
MacBook display set to 2880x1800 (via SwitchResX, demo)
Enabled DisplayPort 1.2 via the monitor UI
Connect monitor to rMBP via included mDP-DP cable (thunderbolt port)
Second thunderbolt port is used for a Gigabit Ethernet adapter.

Using SwitchResX, I created a "Custom Resolution" profile for 3840 x 2160, 60Hz. Every time I select that profile, the monitor goes dark and says "There is no signal coming from your computer". Using the default 3840 x 2160, 30Hz has painful display lag.

Any suggestions? I've pretty much read over this thread and done I think everything suggested, but it's still not working.

 

[VirtualRain]

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[/COLOR]not sure if this shows lag or not but i just made this video. rMBP App Store Resize

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Interesting... I have the same experience doing that on my 2013 rMBP here at the office (whether it's on the laptops display or the 27" Thunderbolt Display).

I'll have to try that on my 2013 Mac Pro at home with 4K displays.

Although the app store window is particularly bad, my mouse pointer can move faster than the window can redraw when resizing any window on my laptop and it doesn't matter what display it's on.

 

[StE823]

this is amazing if it can work with my rMBP 13" even at 52hz... i'd like to pickup the 24" and run it at 1080p HiDP for now and hopefully pickup a refurb mac pro later this year or next.

 

[KBS756]

Pulled the trigger on one, which I should hopefully get on Sunday or Monday

I hope the AG isn't too bad because I prefer the clean and pop of most glossy displays over AG which I feel compromises the clarity... Hope the AG isn't too bad, especially if I try to run it at Native Resolution

 

[tiage46]

I can get the 27 for 546/shipped with 5yr warranty.... tax free, but since we don't know each other probably not going to work to send you one lol.

I've been waiting since mid-November for a deal on the 27", checking almost every day lol. Is there anyway you can let me know how to get this deal? I've currently got a UP2414Q running beautifully on my base mid-2014 15" rMBP (w/o the NVIDIA card) but I'm ready for the 27".

 

[dacko]

P2415Q + LG 34UM94 2013 rMBP in Clamshell Mode

I currently have a LG 34UM94 connected via thunderbolt and an ancient Dell 2310H connected via DisplayPort. I want to get the P2415Q to replace the Dell 2310H. I have the 2013 rMBP with Nvidia GeForce GT650M | Intel HD Graphics 4000 to which both the displays will be connected. I use the rMBP in a clamshell mode. Will the rMBP be able to drive both displays, the LG 34UM94 & Dell 2415Q via the thunderbolt bus without major performance issues at 60 MHz ? I appreciate if someone can chime in if this set up will work. Thanks!

 

[mjfutures]

I've been waiting since mid-November for a deal on the 27", checking almost every day lol. Is there anyway you can let me know how to get this deal? I've currently got a UP2414Q running beautifully on my base mid-2014 15" rMBP (w/o the NVIDIA card) but I'm ready for the 27".

It's not available to the public and I don't want to try and push sales on this forum lol ....

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Interesting... I have the same experience doing that on my 2013 rMBP here at the office (whether it's on the laptops display or the 27" Thunderbolt Display).

I'll have to try that on my 2013 Mac Pro at home with 4K displays.

Although the app store window is particularly bad, my mouse pointer can move faster than the window can redraw when resizing any window on my laptop and it doesn't matter what display it's on.

It looks like you also have the Mac Pro 2013 and rMBP like me. Do you notice the same performance with the Dell on either machine? I'm thinking maybe the window resize issue does the same thing on the Macbook itself.

I just did a PRAM reset on my rMBP and it feels much better. Which reminds me, I just did a PRAM reset on my MP2013 when it was having issues with the display flickering and after doing that it ran really good too! Maybe PRAM is the trick to at least help a little.

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Interesting... I have the same experience doing that on my 2013 rMBP here at the office (whether it's on the laptops display or the 27" Thunderbolt Display).

I'll have to try that on my 2013 Mac Pro at home with 4K displays.

Although the app store window is particularly bad, my mouse pointer can move faster than the window can redraw when resizing any window on my laptop and it doesn't matter what display it's on.

Do you use your rMBP in clamshell mode or as another display?

 

[VirtualRain]

It's not available to the public and I don't want to try and push sales on this forum lol ....

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It looks like you also have the Mac Pro 2013 and rMBP like me. Do you notice the same performance with the Dell on either machine? I'm thinking maybe the window resize issue does the same thing on the Macbook itself.

I just did a PRAM reset on my rMBP and it feels much better. Which reminds me, I just did a PRAM reset on my MP2013 when it was having issues with the display flickering and after doing that it ran really good too! Maybe PRAM is the trick to at least help a little.

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Do you use your rMBP in clamshell mode or as another display?

So I tried resizing the App store window on the 2013 nMP with D500 GPUs and 4K displays and the behavior was exactly the same... it's possible to move the mouse pointer much faster than the window will redraw... I think the redraw of windows is simply not that smooth when resizing regardless of what computer or display you're using.

I haven't connected the 4K to my rMBP as it's an early 2013 model and won't drive a 4K display. I use the rMBP with a 27" Thunderbolt display.

 

[VirtualRain]

For everyone thinking that native 2560x1440 is sharper than 2560x1440 HiDPI on a 4K display, you can see for yourself the difference.

The attached are taken with my iPhone which is plenty enough to reveal the obvious differences. One is the Apple Thunderbolt Display at 2560x1440 (native), the other is 2560x1440 HiDPI on my Dell 4K.

With Apple's scaling... More pixels is more better

 

[mjfutures]

So I tried resizing the App store window on the 2013 nMP with D500 GPUs and 4K displays and the behavior was exactly the same... it's possible to move the mouse pointer much faster than the window will redraw... I think the redraw of windows is simply not that smooth when resizing regardless of what computer or display you're using.

I haven't connected the 4K to my rMBP as it's an early 2013 model and won't drive a 4K display. I use the rMBP with a 27" Thunderbolt display.

Great info! Thank you.

 

[VirtualRain]

And just for comparison, here's the same shot with my preferred 3008x1690 HiDPI desktop on the 4K display... It's just as sharp at normal viewing distances and only slightly more jagged with your nose to the screen as in this shot. This setting provides the perfect balance of sharpness, legibility, and real-estate on a 27" 4K display. YMMV.