I have 2 Dell UP2414Q 4K monitors on a Late 2013 Retina Macboo Pro 15-Inch. I can - Run both monitors at 4K on thunderbolt ports at 30Hertz - Run ONE monitor at 4K 60 Hertz on Thunderbolt and the second at 4K 30 Hertz on HDMI (Current Config) I can not - Run 2 monitors at 60 Hertz - Plug 2 monitors on Thunderbolt as soon as one monitor is at 60 Herz. The second thunderbolt port STOPS WORKING PERIOD.

Outlook mac email signature formatting. MacBook Pro (15-inch, Retina, Mid 2014) MacBook Pro (15-Inch, Retina, Touch Bar, Four Thunderbolt 3 Ports, Mid-2017) MacBook Pro (15-inch, Touch Bar, Late 2016). Aug 02, 2016  Since pfSense is a different alteration of the Linux Operating system I was considering and interested into building a computer into a router. This computer that I am talking about is the (Questionably Failure ) 2009-2014 Mac Mini.

Would prefer both monitors at 60Hertz but I can't truly notice since the second monitor is always for browsing or tools while I work on the primary. I also keep the laptop open for a third screen for consoles and stuff like that. Ableton live. If anybody can explain the second Thunderbolt port stops working I would like to know. I have 2 Dell UP2414Q 4K monitors on a Late 2013 Retina Macboo Pro 15-Inch. I can - Run both monitors at 4K on thunderbolt ports at 30Hertz - Run ONE monitor at 4K 60 Hertz on Thunderbolt and the second at 4K 30 Hertz on HDMI (Current Config) I can not - Run 2 monitors at 60 Hertz - Plug 2 monitors on Thunderbolt as soon as one monitor is at 60 Herz.

The second thunderbolt port STOPS WORKING PERIOD. Would prefer both monitors at 60Hertz but I can't truly notice since the second monitor is always for browsing or tools while I work on the primary. I also keep the laptop open for a third screen for consoles and stuff like that. If anybody can explain the second Thunderbolt port stops working I would like to know.

Hi Stephane, Thanks for the information. Can you please tell me how much load the CPU and GPU get when the rMBP hooked up to the 2 monitors? Is the Iris Pro driving them or is the GT750M active? Do the computer run hotter than using just the laptop monitor? With both monitors running at 30Hz, can you daisy chain both monitors from a single Thunderbolt port? Sorry for asking too many questions, I myself have the same rMBP and I am looking in the market to buy a pair of 4K monitors but I'm not sure how well can my mac drive them.

For the answer to your question, each Thunderbolt port on your MacBook has 10Gbit/s of bandwidth per channel. Streaming 4K video @30Hz requires ~8Gbit/s of bandwidth, therefore streaming 4K with MST @60Hz requires ~16Gbit/s of bandwidth which is over the 10Gbit/s limit of the Thunderbolt channel.

However, with Thunderbolt v2 (comes with late-2013 rMBP model and up) it is possible to combine/aggregate channels and stream the combined up to 20Gbit/s worth of bandwidth through a single port, I believe in order to do that the other unused thunderbolt port needs to be shut down. Hi, No noticeable CPU load for daily tasks.

The CPU fan will turn on when playing FULL 1080i Mp4 videos but it also did the same on my old 1080 monitor. External hard drive for mac and pc. I'm always on the GT750M when plugged in and switch to Iris Pro when on the battery but then the 4k displays are not connected.

I did not try daisy chaining the Monitors (Not sure they even support it). As for GPU load there is a very small difference when doing long redraw tasks like page down 30 pages in a heavy PDF or Word Doc. I do not play games but I would probably switch the monitor to 1080 when doing so.

As for the monitors I got them half price on ebay. Would not pay 1200$ per monitor. Hi Stephane, thanks you for your input. Losing faith in Apple for an refresh of their Thunderbolt Display lineup. I'm going to get a third-party 4K display to test it out because I'm not used to such dense resolution on a screen I usually place it around 60cm away from me (I still think that high number of pixel density is an overkill), if I'm okay with the resolution I'm going to get another one.

I don't mind running the second 4K display at 30Hz since I'm going to use it mostly for browsing along or real time colour proofing of what I retouch on my first screen. Apple Footer • This site contains user submitted content, comments and opinions and is for informational purposes only.