I thought I did my research but I can't get my new Macbook to squeeze out 60hz to my monitor.


Macbook Pro 2016 running High Sierra (15", Radeon Pro 450 2GB, 2.6 GHz i7, 16GB ram)

Dell P2415Q (Supports 60hz at 4k)

Satechi HDMI to USB-C cable (Supports 60hz at 4k)

Why can't I get 60hz on my monitor with this setup? I've even tried to force it up with SwitchResX but no luck.


Okay, so I think I've found the problem myself. On this page, Dell states:

Dell P2415Q and P2715Q flat panel displays purchased before March 2016, only support HDMI 1.4 and provide 4k x 2k (3840 x 2160 pixels) resolution @ 30 Hz using the HDMI cable connection. 4k x 2k @60Hz is available via DisplayPort connection on these displays.

Soooo, off to my cable provider once again to get a DisplayPort to USB-C cable instead.

  • 1
    Did the DisplayPort cable solve the problem? – Graeme Pyle Nov 21 '17 at 15:54
  • 1
    Yep, worked with 60hz as soon as the cable was plugged in. – Christoffer Nov 22 '17 at 19:27
  • Do you notice unusual heating when you connect the P2415Q, I lost one aged Macbook due to the heating after I connect P2415Q, if you noticed something abnormal, I'm going to avoid High Sierra (it was an issue that manifested itself after High Sierra) – Kaan Dec 5 '17 at 14:27
  • Fortunately not. – Christoffer Dec 8 '17 at 12:32

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