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The refresh rate on the 4K screen is dropped to 30 Hz if it's one of only two active displays. To sum up, this means that my early 2015 rMBP 13" will only display 4K 60 Hz on the screen capable of doing so if either all 3 displays are active or the 4K display is the only active display. Scenario 3 = 2 desktops without builtin screen:ĭisplay 1 (old) is connected with 900x1440 60 Hz,ĭisplay 2 (4K) is connected with 3840x2160 60 Hz

Scenario 2 = 2 desktops with builtin screen:ĭisplay 2 (4K) is connected with 3840x2160 only 30 Hz RMBP Early 2015 with macOS 10.12.6 and 16 GB RAM ĭisplay 1 (old): 900x1440 via mDP-DVI adaptor and DVI cable Display 2 (4K): 3840x2160 via mDP-DP cableĭisplay 2 (4K) is the only desktop displayed at 3840x2160 Hz Also, MacOS does not let me choose the refresh rate for the 4K screen when it's connected through the Mini DisplayPort to DisplayPort cable - other than feeling the difference, I only see the refresh rate in the system profiler. However, there are anomalies on my side when it comes to the refresh rate depending on my screen setup. Each originally shipped with OS X Yosemite and featured a 13.3-inch Retina display with up to 10 hours battery life (12 hours for iTunes movie playback).ĪppleInsider may earn commission on products purchased through affiliate links.I have a similar device (Early 2015 rMBP with 16 GB running macOS Sierra 10.12.6) and can confirm that it will power an external 4K display at 60 Hz - it's supposed to power two external displays at 4K (3840x2160) in addition to the builtin display, in fact. Under the hood of each 13-inch MacBook Pro fifth generation Intel Core processors up to 3.1 GHz, with Turbo Boost Speeds up to 3.4 GHz faster integrated Intel Iris Graphics 6100 and flash storage that is up to two times faster (at throughput up to 1.6GBps) than the previous generation 13.3" MacBook Pro (Mid 2014). The Force Touch trackpad also enables a new gesture called Force Click, a click followed by a deeper press, for tasks like pulling up the definition of a word, quickly seeing a map or glancing at a preview of a file. Ushering in a new dimension of interactivity to the Mac, the new trackpad features built-in force sensors that allow you to click anywhere and haptic feedback that provides a responsive and uniform feel. The 13-inch MacBook Pro (Early 2015) was introduced on March 9th, 2015 as an evolutionary performance upgrade to the 13-inch MacBook Pro family that also marked the debut of an all-new Force Touch trackpad.