Apple Details Expanded 4K Display Support Included in OS X 10.9.3

[repoman27]

What about 4k televisions? Are you including those? I just saw a 55" 4K Tv on the Price Is Right the other day and it was only $995, I believe. I don't know about you, but I think a 55" 4K TV as a monitor would be pretty sweet for only $995.

Very few (as in possibly just the Panasonic TC-L65WT600 at this point) 4K UHD TVs support 60 Hz input, and once you hit 40 inches, the pixel density drops to 110 ppi, so scaling isn't as important (except for the fact that your viewing distance has probably increased so much that maybe you do still want some scaling). The 10.9.3 update is pretty much all about 4K @ 60 Hz and HiDPI modes.

It depends on cost and required volume. I don't see anything wrong with eDP for an imac.

I was actually thinking that Apple would insist on eDP. What I was getting at is there isn't any known panel that would make for a true retina 27-inch iMac, or anything even remotely close that would work for a ~21-inch version.

What does Apple need to do to support new 4K 60Hz displays?

What 4K 60Hz displays are not supported that could be supported given a working DisplayPort 1.2?

I think some people mentioned that old Mac Pros won't do 60Hz even if they have 10.9.3 and a card with DisplayPort 1.2 (GTX 680 or Radeon 7950)?

...

I have no idea where the lines are drawn in terms of division of labor between Apple and their hardware vendors when it comes to drivers for OS X. I know AMD was the one who pushed DisplayID 1.3 through VESA, and they have already added support for it to their Windows drivers for certain GPUs. Who knows where things stand on the Mac side, or as far as Intel or NVIDIA's hardware and driver support goes. The HiDPI scaling routines are probably all Apple, but a lot of the tiled display and high speed HDMI issues seem to lie more with lower level harware/driver issues or arbitrary restrictions.

The available yet not explicitly listed by Apple as supported 4K displays with DP 1.2 inputs are (AFAIK):

Asus PQ321QE (EMEA version of the PQ321Q and almost certainly supported)
Sharp PN-K321H (EMEA version of the PN-K321 and almost certainly supported)
Sharp PN-K322B (touchscreen version of the PN-K321 and likely supported, at least as a conventional display)
Samsung U28D590D (only started shipping a few weeks ago)

All of the discrete GPUs used by Apple since 2011 have supported DP 1.2, however, only the Macs with Thunderbolt 2 controllers can support DP 1.2 output; the rest are limited to DP 1.1a. If you don't have a Mac Pro (Late 2013) or MacBook Pro (Retina, Late 2013) then you would need to use multiple links or a DP MST concentrator (which aren't available yet) to drive a 4K display at 60 Hz. And now that I read what you actually asked, I have no idea why older Mac Pros running 10.9.3 with GPUs that support DP 1.2 wouldn't work just fine.

 

[8CoreWhore]

Using 4K displays and Ultra HD TVs with Mac computers

http://support.apple.com/kb/HT6008?viewlocale=en_US&locale=en_US

 

[intelliot]

Apple Thunderbolt Display + ASUS PQ321

Has anyone gotten the Apple Thunderbolt Display *and* ASUS PQ321 to work with a 15" Retina MacBook Pro at the same time? I can only get one or the other to work; not both.

 

[Blu-ray1972]

Lots of issues supporting more than 2 monitors (of ANY resolution)

10.9.3 broke support for more than 2 monitors for Many people.

I have the same issue both with my 2011 MBP 13 Inch and 2013 MB Air 13 Inch. I can't use an external monitor.

 

[repoman27]

Has anyone gotten the Apple Thunderbolt Display *and* ASUS PQ321 to work with a 15" Retina MacBook Pro at the same time? I can only get one or the other to work; not both.

When you drive any of the current crop of tiled 4K displays at 60 Hz, they count as 2 displays. You can only drive 2 displays via Thunderbolt on a MacBook Pro. An Asus PQ321Q at 60 Hz plus an ATD would be the same as connecting 3 displays.

You could run the PQ321Q at 30 Hz via the HDMI port, or make sure MST is disabled and run it at 30 Hz via Thunderbolt / DisplayPort while still driving your ATD (but of course you can't connect a DP display directly to an ATD either).

 

[shurcooL]

YOU remember incorrectly, the 13" came out 4 months later, that same year

You're right, thanks.

 

[blindcolumn]

Does anyone know if there's a way to get one of the Dell displays (I have a UP2414Q ) working at 60 Hz with an old Mac Pro? When I put the display in "DisplayPort 1.2 Mode" it becomes two 1920x1080 tiles side by side.
I have a 7950, is there some way to flash it to make it work? Will it work if I buy a R9 280x instead?