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Dell P2715Q and P2415Q 4K IPS Displays
- Thread starter VirtualRain
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I imagine it is the same resolution but since I don't have the 27", probably best that someone else who has it can confirm.
Well, performance and refresh rate are different things. Most of the graphics cards in the older hardware are underpowered to run 4K @ 52Hz. Depends on what you do with your computer. For me, the difference is quite noticeable, mostly in how the cursor is laggy on 30Hz.
My current work setup is dual p2715q with 2015 rMBP w. R9 370x. It's AWESOME. I usually keep the laptop in clamshell mode. It's "near" retina at the distance at which I use the machines.
Of course, I'd now love dual LG 5k ultra fines with the new 15" rMBPtb. But I don't think my bosses would spring for that...
Of course, I'd now love dual LG 5k ultra fines with the new 15" rMBPtb. But I don't think my bosses would spring for that...
3840 x 2160 at 60Hz
In the Mac's display settings I'm trying different scaling for the best balance between text size and workspace. At the moment I'm on option 2 'Looks like 2560 x 1440'.
Matt
Good thread. I purchased a 2016 15" tb model w/ the Radeon 460 but am having lots of issues not to mention ~3-3.5 hr battery life. Seriously debating returning this.
Can anyone tell me if the 2015 model with the AMD Radeon R9 M370X can adequately power dual 4k @ 60hz plus the retina screen? Does it run hot? Any performance issues? Any lag switching screens?
I currently have two LG - 27" IPS LED 4K UHD FreeSync Monitors that I'm running at the equivalent of 2560x1440 with my 2016 tb, plus the retina screen. The 2016 tb does seem to power these really well. I will be using this setup 90% of the time.
So frustrating that I can't find any solid info from Apple docs or support. Thanks!
Can anyone tell me if the 2015 model with the AMD Radeon R9 M370X can adequately power dual 4k @ 60hz plus the retina screen? Does it run hot? Any performance issues? Any lag switching screens?
I currently have two LG - 27" IPS LED 4K UHD FreeSync Monitors that I'm running at the equivalent of 2560x1440 with my 2016 tb, plus the retina screen. The 2016 tb does seem to power these really well. I will be using this setup 90% of the time.
So frustrating that I can't find any solid info from Apple docs or support. Thanks!
Went to the Apple store this evening. A sales person and genius person both said it's not possible to run dual 4k @ 60hz with a 2015 rMBP, 30hz is max. Aren't a lot of you running dual 4k on 2015 and lower?
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So I finally connected the P2715Q to my late 2016 MPB Pro 13" TB. The default 4K resolution is clearly 3840-by-2160, but with that enabled, no way I can ever read anything on the screen. So my question is: how can I still run a 4K like resolution and still have decent font size? I keep hearing about HiDPI mode, but not sure what it means really, in terms of resolution.
Go to the Displays system preference. Hold the Option key while you click on the "Scaled" button. All your resolution choices will be there.
Gotcha. So I guess if I go with the larger font, 2560 x 1440, this will definitely not be 4K or retina. At the highest res, it's impossible to read the text on the screen. So I have to wonder what's the point of the 4K resolutions? Other than watching movies and working in Photoshop.
Wrong. HiDPI uses all the pixels. Here is more info: Retina Display - Wikipedia, Enable HiDPI Display Modes in Mac OS X Lion with Quartz Debug
2560x1440 scaled on my P2715Q looks better than 2560x1600 native on my old Dell 30" because of HiDPI. Not just for videos or Photoshop, for everything.
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I have a question:
I own one of those "wrong" 4K 27"'monitors, and like most people I run it scaled at 1440p because that's the most sensible font size for 27" in my opinion.
When the monitor is running scaled at 1440p, does it still behave like its native 4K with respect to desktop background and photos? So, if I use a 4K photo as background, does it get rendered in 1440p?
Hope this makes sense.
As far as I understand it, in HiDPI mode, everything will get up sampled, then down sampled to the chosen resolution.
So I'm running the P2715Q with the late-2016 MBP 13" TB at 2560x1440. What I've noticed is some lag when switching from one tab to another. Basically the tab goes blank for 1-2 seconds when I switch from one to another. Kinda like a refresh of the page. I tried in both full screen and normal mode.
Any ideas? I run DisplayPort to USB-C cable and it shows 2560x1440 at 60HZ in the MAC system.
Thank you!
Any ideas? I run DisplayPort to USB-C cable and it shows 2560x1440 at 60HZ in the MAC system.
Thank you!
You didn't look hard enough Using 4K displays, 5K displays, and Ultra HD TVs with your Mac.
Haha but I still don't know the answer!!.. and I gave up trying. Nowhere does it say two 4k monitors at 60hz. All it says under MST, which is pretty vague is: "If you use a 60Hz MST display with the MacBook Pro (Retina, 15-inch, Mid 2015) with AMD Radeon R9 M370X graphics card or iMac (Retina 5K, 27-inch, Late 2014), only one additional Thunderbolt display can be supported."
Other Apple documentation says only one 4k monitor is supported at 60hz, and their genius bar told me the AMD Radeon R9 M370X rMBP does not support dual 4k at 60hz, even though people here seem to do it.
Still confused.
Hi guys, can I run either of these monitors at 2560x1440 and have the text look crisp?
2 years ago, I bought a new 2415q before and the text most certainly did not look crisp. Only 1920x1080p looked crisp and that's it. I abandoned it, figuring that once again only an Apple monitor would scale "correctly" and without issues.
What do I mean? On a 21.5" 4k iMac, I can scale anywhere from 1920x1080p to 2560x1440 and it all looks retina to me.
Have things improved over the last 2 years, either with Sierra or the hardware?
2 years ago, I bought a new 2415q before and the text most certainly did not look crisp. Only 1920x1080p looked crisp and that's it. I abandoned it, figuring that once again only an Apple monitor would scale "correctly" and without issues.
What do I mean? On a 21.5" 4k iMac, I can scale anywhere from 1920x1080p to 2560x1440 and it all looks retina to me.
Have things improved over the last 2 years, either with Sierra or the hardware?
I just tested scaled modes for you, and they look pretty damn good, none of the issues that I also spotted 2 years ago that pushed me to switch to 4K/Retina (Using Zoom It to inspect pixels close up)
Now, this experience kind of ruined me, I wonder whether I should use one of the scaled modes
I own a Late 2014 27" Retina 5K iMac with the AMD Radeon R9 M290X (2GB).
According to MacRumors, this iMac can drive one 4K display at 60Hz over Thunderbolt and one additional 2,560×1,440 display.
Will there be a problem with the refresh rate if I add two P2715Qs and scale them back to 2560 x 1440?
According to MacRumors, this iMac can drive one 4K display at 60Hz over Thunderbolt and one additional 2,560×1,440 display.
Will there be a problem with the refresh rate if I add two P2715Qs and scale them back to 2560 x 1440?
Second display arrived today, spent a good few minutes checking both and they seem to be dead pixel free!
With regards to my 2014 MBPr 15" i7 running both monitors I can also confirm that they can run the internal display at the maximum resolution including both external displays at full resolution 60Hz absolutely fine!
Now debating if I should order a TB2 PCIe enclosure, I have a bad feeling with this introduced into the mix that both displays won't work at 60Hz!
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After using this for awhile, did you notice any lag or everything went on smoothly?
I have 2 Dell P2715Q and I'm considering buying a Macbook Pro 15" 2014 (with Nvidia Gtx) or 2015 (with AMD Radeon) to drive them. Apple says it doesn't work but apparently it does. Just wanna make sure it's lag free.
Haha but I still don't know the answer!!.. and I gave up trying. Nowhere does it say two 4k monitors at 60hz. All it says under MST, which is pretty vague is: "If you use a 60Hz MST display with the MacBook Pro (Retina, 15-inch, Mid 2015) with AMD Radeon R9 M370X graphics card or iMac (Retina 5K, 27-inch, Late 2014), only one additional Thunderbolt display can be supported."
Other Apple documentation says only one 4k monitor is supported at 60hz, and their genius bar told me the AMD Radeon R9 M370X rMBP does not support dual 4k at 60hz, even though people here seem to do it.
Still confused.
Hmm ok... Yes, each TB2/mDP port on the 2015 15" w/M370X GPU can drive a 4K display at 60Hz. So with the internal display and the HDMI 1.4 port, you could theoretically have the internal retina display (basically 4K, in DPI in anyway), two P2415Qs at 60Hz 2160p/4K and then a 1080p monitor (or I think even 1440p for HDMI 1.4???) off to the side also at 60Hz.
Source: used to have 2 P2415Qs